WO2023174288A1

WO2023174288A1 - Communication method, apparatus and system, and storage medium

Info

Publication number: WO2023174288A1
Application number: PCT/CN2023/081386
Authority: WO
Inventors: 杨悦; 宋跃忠; 陈霞; 耿男; 毛健炜; 宋健; 金闽伟
Original assignee: 华为技术有限公司
Priority date: 2022-03-18
Filing date: 2023-03-14
Publication date: 2023-09-21
Also published as: CN116801281A

Abstract

The present application relates to the technical field of communications, and provides a communication method, apparatus and system, and a storage medium. The method comprises: a first device determines a first energy type of power supply energy for the first device, wherein the first device is a network device having a packet forwarding function in a communication network, and the first energy type is renewable energy; and the first device sends a first notification packet, wherein the first notification packet indicates the first energy type. According to the present application, the utilization rate of renewable energy can be improved.

Description

Communication method, device, system and storage medium

This application claims priority to the Chinese patent application with application number 202210273382. middle.

Technical field

The present application relates to the field of communication, and in particular to a communication method, device, system and storage medium.

Background technique

The power supply energy for equipment in communication networks is divided into renewable energy and non-renewable energy. Current renewable electricity energy includes wind power energy, hydropower energy and solar power energy. Renewable electric energy does not require human participation and can be recycled in nature. Non-renewable electricity energy includes coal power energy, etc. Non-renewable energy comes from fossil fuels such as coal or petroleum.

Communication networks include a large number of devices, some of which are powered by renewable energy and some of which are powered by non-renewable energy. If the utilization rate of renewable energy in the communication network is high, the communication network will become lower carbon and environmentally friendly. Therefore, how to improve the utilization rate of renewable energy is an urgent problem that needs to be solved.

Contents of the invention

This application provides a communication method, device, system and storage medium to improve the utilization rate of renewable energy.

In a first aspect, the present application provides a communication method, which method is applied to a network system including a first device and a second device. In the method, the first device determines a first energy type of the energy supplied by the first device. , the first device is a network device with a message forwarding function in the communication network, and the first energy type is renewable energy. The first device sends a first notification message, and the first notification message indicates the first energy type.

The first notification message indicates the first energy type of the power supply energy of the first device, where the first energy type is renewable energy. In this way, the second device that receives the first notification message can learn that the energy type of the power supply energy of the first device is the first energy type based on the first notification message, and update the routing information on the second device accordingly. One-hop routing uses the first device powered by renewable energy to forward more network traffic. This not only reduces the energy consumption of the communication network, but also improves the utilization of renewable energy, making the communication network low-carbon and environmentally friendly.

In a possible implementation, when the energy type of the power supply energy of the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable energy. , the second notification message indicates the second energy type. Since the second notification message indicates the second energy type of the power supply energy of the first device, the second device that receives the second notification message can learn based on the second notification message that the energy type of the power supply energy of the first device has changed to non- renewable energy, thereby performing route recovery based on the second advertisement message.

In another possible implementation, the first advertisement message includes identification information of a link with the first device as an endpoint and a first cost value of the link, where the first cost value corresponds to the first energy type. . This causes the first notification message to indicate the One type of energy. Since the first cost value corresponds to the first energy type, the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first cost value, so as to improve the utilization rate of renewable energy and enable communication. The Internet has become low-carbon and environmentally friendly.

In another possible implementation, the first advertisement message is an interior gateway protocol IGP message, the first advertisement message includes a link status type length value TLV or a node status TLV, and the first cost value is carried on the link Status TLV or the node status TLV. In this way, the first advertisement message includes the first cost value, and since the first advertisement message is an IGP message, the first device can advertise the first energy type to other devices in the AS domain where the first device is located.

In another possible implementation manner, the first notification message is an IGP message, the first notification message includes an energy saving factor TLV, the energy saving factor TLV is an extended TLV, and the energy saving factor TLV includes the first cost value. In this way, the first advertisement message includes the first cost value, and since the first advertisement message is an IGP message, the first device can advertise the first energy type to other devices in the AS domain where the first device is located.

In another possible implementation, when the first notification message is an IGP message, when the energy type of the power supply energy of the first device changes from the first energy type to the second energy type, the first device sends The second notification message, the second energy type is non-renewable energy, the second notification message indicates the second energy type, the second notification message is an IGP message, the second notification message includes the identification information of the link and the second notification message. Two cost values, the second cost value corresponds to the second energy type. This causes the second advertisement message to indicate the second energy type. Since the second cost value corresponds to the second energy type, the second device can perform route recovery based on the second cost value.

Optionally, in the above-mentioned implementation of notifying the energy type of the power supply energy of the first device through the IGP message (for example, the above-mentioned notification of the energy type of the power supply energy of the first device through the cost value in the IGP message), the first The first device and the second device are devices in the same autonomous system AS domain.

In another possible implementation, the first advertisement message is a Border Gateway Protocol BGP message, the first advertisement message is used to carry device attributes, the first advertisement message includes a first new router attribute field, and the first The new router attribute field includes the first energy type. In this way, the first advertisement message indicates the first energy type, and the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first energy type included in the first newly added router attribute field to improve the efficiency of the communication network. The utilization of renewable energy makes communication networks low-carbon and environmentally friendly.

In another possible implementation, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable. Energy, the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message is used to carry the attributes of the device, the second advertisement message includes a second new router attribute field, and Two new router attribute fields include the second energy type. This causes the second advertisement message to indicate the second energy type. The second device can perform route recovery based on the second energy type included in the second newly added router attribute field.

In another possible implementation, the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is For carrying the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, the first advertisement message includes a first color field, and the first color field includes a first energy type. In this way, the first notification message indicates the first energy type, and the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first energy type included in the first color field to increase renewable energy. The utilization rate makes the communication network low-carbon and environmentally friendly.

In another possible implementation, the first newly added router attribute field and the first color field are distinguished by type Type, type code Typecode, address family flag AFI or sub-address family flag SAFI. Among them, the Type included in the first newly added router attribute field is different from the Type included in the first color field, the Typecode included in the first newly added router attribute field is different from the Typecode included in the first color field, and the first newly added router attribute field includes The AFI and the AFI included in the first color field are different. And/or, the SAFI included in the first newly added router attribute field and the SAFI included in the first color field are different, so that the second device can identify the first newly added router attribute field and the first color field in the first advertisement message. .

In another possible implementation, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable. Energy, the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message is used to carry SRv6 Policy, the second advertisement message includes a second color field, and the second color field includes Second energy type. In this way, the second advertisement message indicates the second energy type, and the second device performs route recovery based on the second energy type included in the second color field.

In another possible implementation, the value of the first color field is a first value, the first value indicates the first energy type, the value of the second color field is a second value, and the second value Indicates the secondary energy type. The color field thereby indicates the type of energy source powering the first device.

In another possible implementation, the value of the first color field is a wind power color value, and the wind power color value indicates that the first energy type is wind power energy. Alternatively, the value of the first color field is a hydropower color value, and the hydropower color value indicates that the first energy type is hydropower energy. Alternatively, the value of the first color field is a solar color value, and the solar color value indicates that the first energy type is solar electric energy. This allows different renewable energy sources to be indicated via the first color field.

In another possible implementation, the first advertisement message is a BGP message, the first advertisement message includes a first path attribute field, the first path attribute field includes first routing information, and the first routing information includes first The energy type, the first routing information is the routing information saved on the first device. In this way, the first advertisement message indicates the first energy type, and the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first routing information included in the first path attribute field to improve regeneration. Energy utilization makes communication networks low-carbon and environmentally friendly.

In another possible implementation, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable. Energy, the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message includes a second path attribute field, the second path attribute field includes second routing information, and the second routing information including the second energy type and the first routing information except content beyond the first energy type. In this way, the second advertisement message indicates the second energy type, and the second device performs route recovery based on the second routing information included in the second path attribute field.

In another possible implementation, the first advertisement message is a BGP message, the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the first energy type, and the first routing information is the first energy type. Routing information saved on a device. In this way, the first advertisement message indicates the first energy type, and the path priority of routing information corresponding to the same first energy type can be uniformly managed based on the community attribute value, thereby improving operation and maintenance efficiency.

In another possible implementation, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable. Energy, the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, and the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type. In this way, the second advertisement message indicates the second energy type, and the path priority of routing information corresponding to the second energy type can be uniformly managed based on the community attribute, thereby improving operation and maintenance efficiency.

In another possible implementation, the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the first autonomous system path AS-Path field of the first advertisement message includes m For the same AS number, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the AS domain where the first device is located. In this way, the first energy type is indicated by the length of the AS number, enriching the way of indicating the first energy type.

In another possible implementation, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message, and the second energy type is non-renewable. Energy. The second advertisement message indicates the second energy type. The second advertisement message is a BGP message. The second advertisement message is used to announce routes to neighbors. The second AS-Path field of the second advertisement message includes n In the AS number, n is a multiple value corresponding to the second energy type, n is an integer greater than 0, and m is not equal to n. In this way, the length of the AS number is used to indicate the second energy type, enriching the way of indicating the second energy type.

Optionally, in the above-mentioned various implementations of notifying the energy type of the power supply energy of the first device through BGP messages, the first device and the second device are devices in two different AS domains.

In another possible implementation, the first device receives capability information of the second device, where the capability information is used to indicate that the second device has the capability to process the first notification message. When the first device determines that the second device has the capability based on the capability information, the first device sends a first notification message. This avoids sending the first notification message to the second device when the second device does not have the capability, thereby avoiding wasting network bandwidth resources.

In another possible implementation, the first device sends the first notification message when the energy types of the energy supplied by the first device determined in multiple consecutive cycles are all the first energy type. When it is determined that the energy type of the power supply energy of the first device is the first energy type for multiple consecutive cycles, it indicates that the current renewable energy is relatively stable and can provide stable power supply energy to the first device. At this time, the first device sends the first notification message indicating the first energy type, so that not only can Reducing the number of sending notification messages can also avoid frequent adjustments to the transmission path of network traffic in the communication network.

In another possible implementation, when the first device does not receive network traffic to be forwarded in the first time period, the first device shuts down or sleeps. After the first device is shut down or hibernated, it consumes the least energy, which can save energy.

In another possible implementation, the first device is powered on at a set time. If the first device receives network traffic within a set time period after being powered on, the first device remains powered on and working. In this way, the first device can forward the received network traffic to avoid affecting the transmission of the network traffic.

In a second aspect, this application provides a communication method, which method is applied to a network system including a first device and a second device. In the method, the second device receives a first notification message, and the first notification message The article indicates that the energy type of the power supply energy of the first device is the first energy type, the first energy type is renewable energy, and the first device is a network device with a message forwarding function in the communication network. The second device determines a transmission path of the first network traffic based on the first advertisement message, and the transmission path of the first network traffic passes through the first device.

Since the first notification message indicates the first energy type of the energy supplied by the first device, the second device determines the transmission path of the first network traffic based on the first notification message, and the transmission path of the first network traffic passes through the first device. In this way, the second device can use the first device powered by renewable energy to forward more network traffic, which not only reduces the energy consumption of the communication network, but also improves the utilization rate of renewable energy, making the communication network low-carbon and environmentally friendly.

In a possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. Since the second notification message indicates that the power supply energy of the first device is non-renewable energy, the second device determines the transmission path of the second network traffic based on the second notification message, so that the transmission path of the second network traffic does not pass through the first device, This enables route recovery.

In another possible implementation, the first advertisement message includes identification information of a link with the first device as an endpoint and a first cost value of the link, where the first cost value corresponds to the first energy type. . This causes the first advertisement message to indicate the first energy type. Since the first cost value corresponds to the first energy type, the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first cost value, so as to improve the utilization rate of renewable energy and enable communication. The Internet has become low-carbon and environmentally friendly.

In another possible implementation, the first advertisement message is an interior gateway protocol IGP message, the first advertisement message includes a link status type length value TLV or a node status TLV, and the first cost value is carried on the link Status TLV or the node status TLV. In this way, the first notification message includes the first cost value, which enriches the way of carrying the first cost value.

In another possible implementation, the first advertisement message is an interior gateway protocol IGP message, and the first advertisement message includes an energy saving factor TLV. The energy saving factor TLV is an extended TLV. The energy saving factor TLV includes a first cost. value. In this way, the first notification message includes the first cost value, which enriches the way of carrying the first cost value.

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy, The second advertisement message is an IGP message, and the second advertisement message includes identification information of the link and a second cost value, and the second cost value corresponds to the second energy type. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. This causes the second advertisement message to indicate the second energy type. Since the second cost value corresponds to the second energy type, the second device performs route recovery based on the second cost value.

Optionally, in the above-mentioned implementation of notifying the energy type of the power supply energy of the first device through the IGP message (for example, the above-mentioned notification of the energy type of the power supply energy of the first device through the cost value in the IGP message), the first The device and the second device are devices in the same autonomous system AS domain.

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy, The second advertisement message is a BGP message, and the second advertisement message is used to carry attributes of the device. The second advertisement message includes a second new router attribute field, and the second new router attribute field includes a second energy type. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. This causes the second advertisement message to indicate the second energy type. The second device performs route recovery based on the second energy type included in the second newly added router attribute field.

In another possible implementation, the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, and the first advertisement message includes and a color field, the first color field including the first energy type. In this way, the first notification message indicates the first energy type, and the second device can aggregate as much network traffic of the communication network as possible to the first device based on the first energy type included in the first color field to increase renewable energy. The utilization rate makes the communication network low-carbon and environmentally friendly.

In another possible implementation, the first newly added router attribute field and the first color field are distinguished by type, type code, address family flag AFI or sub-address family flag SAFI. Among them, the Type included in the first newly added router attribute field is different from the Type included in the first color field, the Typecode included in the first newly added router attribute field is different from the Typecode included in the first color field, and the first newly added router attribute field includes The AFI and the AFI included in the first color field are different. And/or, the SAFI included in the first newly added router attribute field and the SAFI included in the first color field are different, so that the second device can identify the first newly added router attribute field and the first color field in the first advertisement message. .

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the first device The energy type of the power supply energy is the second energy type, and the second energy type is non-renewable energy. The second notification message is a BGP message. The second notification message is used to carry the SRv6 Policy. The second notification message includes the second A color field, a second color field including a second energy type. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. In this way, the second advertisement message indicates the second energy type, and the second device performs route recovery based on the second energy type included in the second color field.

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy, The second advertisement message is a BGP message. The second advertisement message includes a second path attribute field. The second path attribute field includes second routing information. The second routing information includes the second energy type and the first routing information. Content other than an energy type. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. In this way, the second advertisement message indicates the second energy type, and the second device performs route recovery based on the second routing information included in the second path attribute field.

In another possible implementation, the community attribute of the first advertisement message indicates that the first energy type corresponding to the first routing information is a subtype of renewable energy, and the subtype includes wind power energy, hydropower energy, and solar energy. at least one of.

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy, The second advertisement message is a BGP message, and the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. In this way, the second advertisement message indicates the second energy type, and the path priority of routing information corresponding to the second energy type can be uniformly managed based on the community attribute, thereby improving operation and maintenance efficiency.

In another possible implementation, the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the first autonomous system path AS-Path field of the first advertisement message includes m For the same autonomous system AS number, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the AS domain where the first device is located. In this way, the first energy type is indicated by the length of the AS number, enriching the way of indicating the first energy type.

In another possible implementation, the second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is the second energy type, and the second energy type is non-renewable energy, The second advertisement message is a BGP message. The second advertisement message is used to announce routes to neighbors. The second AS-Path field of the second advertisement message includes n AS numbers, where n corresponds to the second energy type. Multiple value, n is an integer greater than 0, m is not equal to n. The second device determines the transmission path of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device. In this way, the length of the AS number is used to indicate the second energy type, enriching the way of indicating the second energy type.

In another possible implementation manner, the second device sends capability information of the second device to the first device, where the capability information is used to indicate that the second device has the capability to process the first notification packet. This prevents the first device from sending the first notification message to the second device when the second device does not have the capability, thereby avoiding waste of network resources.

In another possible implementation, the second device is a network device with a packet forwarding function in the communication network, the second device includes third routing information, and the next hop device indicated by the third routing information is not the first device. Or the next hop device does not include routing information that can reach the first device, and the destination device indicated by the third routing information is the same as the destination device of the first network traffic. The second device replaces the next hop device indicated by the third routing information with a third device based on the first advertisement message, and the third device is the first device or the third device includes routing information that can reach the first device. In this way, by modifying the routing information saved on the second device, the second device can use the first device to forward more network traffic.

In another possible implementation, the second device is a network device with a packet forwarding function in the communication network, the second device includes fourth routing information, and the next hop device indicated by the fourth routing information is the first device. Or the next hop device includes routing information that can reach the first device, and the destination device indicated by the fourth routing information is the same as the destination device of the second network traffic. The second device replaces the next hop device indicated by the fourth routing information with the fourth device based on the second advertisement message. The fourth device is not the first device or the fourth device does not include routing information that can reach the first device, thereby achieving Routing restored.

In another possible implementation, the second device establishes a transmission path of the first network traffic based on the first advertisement message and the destination address of the first network traffic. Since the path of the first network traffic passes through the first device, the first device forwards more network traffic.

In another possible implementation, the second device establishes a transmission path of the second network traffic based on the second advertisement message and the destination address of the second network traffic. Since the transmission path of the second network traffic does not pass through the first device, route recovery is achieved.

In another possible implementation, the second device is a controller or the second device is a head node of a transmission path of the first network traffic.

In a third aspect, this application provides a communication device for performing the method in the first aspect or any possible implementation of the first aspect. Specifically, the apparatus includes a module for performing the method in the first aspect or any possible implementation of the first aspect.

In a fourth aspect, this application provides a communication device for performing the method in the second aspect or any possible implementation of the second aspect. Specifically, the apparatus includes a module for performing the method in the second aspect or any possible implementation of the second aspect.

In a fifth aspect, the present application provides a communication device, which includes a processor and a memory. The processor and the memory may be connected through internal connections. The memory is used to store programs, and the processor is used to execute the programs in the memory, so that the device completes the method in the first aspect or any possible implementation of the first aspect.

In a sixth aspect, the present application provides a communication device, which includes a processor and a memory. The processor and the memory may be connected through internal connections. The memory is used to store programs, and the processor is used to execute the programs in the memory, so that the device completes the method in the second aspect or any possible implementation of the second aspect.

In a seventh aspect, the present application provides a computer program product. The computer program product includes a computer program stored in a computer-readable storage medium, and the computing program is loaded by a processor to implement the first aspect and the third aspect. Two aspects, any possible implementation method of the first aspect or any possible implementation method of the second aspect.

In an eighth aspect, the present application provides a computer-readable storage medium for storing a computer program, which is loaded by a processor to execute the first aspect, the second aspect, any possible implementation of the first aspect, or The second aspect is any possible implementation method.

In a ninth aspect, embodiments of the present application provide a chip, including a memory and a processor. The memory is used to store computer instructions, and the processor is used to call and run the computer instructions from the memory to execute the above first and second aspects. , Any possible implementation of the first aspect or any possible implementation of the second aspect.

In a tenth aspect, the present application provides a communication system. The system includes the device described in the third aspect and the device described in the fourth aspect, or the system includes the device described in the fifth aspect and the sixth aspect. the equipment described.

Description of the drawings

Figure 1 is a schematic structural diagram of a communication network provided by an embodiment of the present application;

Figure 2 is a schematic diagram of network traffic in a communication network provided by an embodiment of the present application;

Figure 3 is a schematic structural diagram of another communication network provided by an embodiment of the present application;

Figure 4 is a flow chart of a communication method provided by an embodiment of the present application;

Figure 5 is a flow chart of another communication method provided by an embodiment of the present application;

Figure 6 is a flow chart of another communication method provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of another communication network provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of another communication network provided by an embodiment of the present application;

Figure 9 is a schematic diagram of an energy saving factor TLV provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of another communication network provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of another communication network provided by an embodiment of the present application;

Figure 12 is a schematic diagram of a color field provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 16 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

Figure 17 is a schematic structural diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The communication network includes multiple autonomous system (AS) domains. Network devices within the AS domain use (interior gateway protocol, interior gateway protocol) IGP to exchange routing information. Network devices belonging to different AS domains use border gateway protocol (border gateway protocol). , BGP) to exchange routing information.

IGP is a protocol for exchanging routing information between network devices within an AS domain and runs in small or medium-sized networks. IGP includes open shortest path first (OSPF), routing information protocol (routing information protocol, RIP), intermediate system-to-intermediate system (IS-IS), interior gateway routing protocol ( protocols such as interior gateway routing protocol (IGRP) and/or enhanced interior gateway routing protocol (enhanced interior gateway routing protocol (EIGRP)). Next, taking OSPF as an example, we will introduce OSPF as follows.

OSPF is a commonly used link state-based IGP routing protocol with scalability. OSPF has a link status notification function that can advertise link status throughout the entire network. OSPF uses LSA to save the status of links in the communication network. LSA is a data structure that saves the status of the link. The status of the link includes parameters such as the link's weight and/or priority. LSA guarantee It exists in the database of the network device, which is also called the link state database. The network device uses the shortest path first (SPF) algorithm to calculate routes to other network devices based on the information in the link state database.

Taking the network device as a router as an example, the process of the router using OSPF to calculate routes includes the following processes.

Step 1. The router initializes the router's own data structure and waits for the low-level protocol (data link layer) to prompt whether the interface is in working state. The interface is an interface on the router.

Step 2: When the low-level protocol prompts that the interface is in working status, the router confirms that the interface is working properly, and then establishes neighbor relationships by exchanging hello (HELLO) messages with other routers.

Step 3: The router uses OSPF to exchange link information with other routers by sending and receiving LSAs.

Step 4: Based on the node link relationship and the cost value of the link, the router calculates the shortest path between itself and other routers as a route.

BGP is an autonomous system routing protocol that runs on the Transmission Control Protocol (TCP). BGP is a protocol designed to handle networks the size of the Internet. It is also a protocol that can properly handle multiple connections between unrelated routing domains.

BGP has the concept of path attributes, which are used to describe BGP routes and serve as the main parameters for routing decisions. There are four types of path attributes, recognized mandatory, recognized self-determination, optional transitive and optional non-transitive. Among them, the recognized mandatory attributes include AS_Path, and the optional transfer attributes include the Community attribute. These two attributes are introduced below.

BGP's Autonomous System Path (AS-Path) uses a string of AS numbers to describe the path or route to the specified destination AS domain. When the BGP speaker initiates a route, it adds its own AS number to AS_Path. Each time the route passes through an AS area, an AS number will be added to the AS_Path to indicate the priority of the path. The more AS numbers are superimposed, the more ASs passed through, and the lower the priority of this route.

The BGP community attribute is an optional transitive attribute. Routers that do not support this attribute will pass the community attribute value intact to downstream BGP neighbors (provided that the community attribute is configured to be passed). The community attribute of BGP can simplify the matching of identical route entries by routers in the network. For example, all routers in a large network need to match the same routing entries. If access control lists (ACLs, ACL) or prefix lists are used for matching, the workload will be relatively large, so on one router, the corresponding The routing entries are marked with the community attribute value, and the routing entries are indirectly matched on other routers by matching the community attribute value, thereby simplifying the matching work of the routing entries.

For any network device in the communication network, the less network traffic transmitted by the network device, the lower the power consumption of the network device. In order to reduce the energy consumption of the communication network, for the network traffic transmitted in the communication network, the transmission path of the network traffic is adjusted so that the network traffic in the communication network is aggregated to a small number of network devices in the communication network. For other network devices in the communication network, the network traffic transmitted on the other network devices will be reduced. When there is no network traffic transmitted on the other network devices, the other network devices shut down or go into sleep, thus reducing the energy consumption of the communication network.

Optionally, the following method can be used to aggregate network traffic in the communication network to a small number of network devices in the communication network, thereby reducing energy consumption of the communication network.

Method 1: Calculate the energy consumption of the device based on the logical basis that traffic changes will affect power consumption. The OSPF protocol is used to extend the type length value (TLV) of link energy consumption, and the calculation result is carried in the TLV. For multiple paths from the entry node to the exit node, calculate the power consumption of each path based on the TLV, and then select the path with the lowest power consumption. The selected path is used to transmit data between the entry node and the exit node, making the communication network able Source consumption reduced.

Method 2: Through controller traffic engineering, the design re-adjusts the traffic path based on the traffic demand and the remaining bandwidth of each network link and trunk. Eventually, the traffic in the network is aggregated to fewer links, so that the traffic of some links in the communication network is 0, and the routers connected to this part of the link are shut down/sleep to achieve energy saving effects. Among them, trunk is a logical interface bound together by multiple links.

Method 3: With the lowest power consumption in the entire network as the goal, calculate the power consumption of the entire network, and finally select the route with the lowest power consumption. Prioritize the use of selected routes to transmit data, reducing the energy consumption of the communication network.

For each network device in the communication network, the power supply energy supplying the network device may be renewable energy or non-renewable energy. When adjusting the transmission path of network traffic in the communication network, if the network traffic is prioritized to be converged on network devices whose power supply energy is renewable energy, this will not only reduce the energy consumption of the communication network, but also improve the efficiency of the communication network. The utilization rate of renewable energy makes the communication network low-carbon and environmentally friendly.

Optionally, the renewable energy includes one or more of hydropower energy, wind power energy, solar power energy, etc. Non-renewable energy comes from fossil fuels such as coal or petroleum. For example, non-renewable energy includes coal power energy. Compared with non-renewable energy, renewable energy is affected by objective factors such as weather and has certain instability. For example, wind power energy is unstable due to weather changes, and solar power energy is unavailable at night. The network equipment of the communication network uses smart grid interface technology to dynamically select power supply energy. For example, when renewable energy is stable, network equipment chooses renewable energy as its own power supply energy; when renewable energy is unstable, network equipment chooses non-renewable energy as its own power supply energy.

Referring to Figure 1, an embodiment of the present application provides a communication network 100. The communication network 100 includes multiple network devices, and two adjacent network devices may be connected through a link.

For example, referring to the communication network 100 shown in FIG. 1 , the communication network 100 includes network device 1 , network device 2 , network device 3 , network device 3 , network device 4 , network device 5 , network device 6 and network device 7 . Taking network device 2 as an example, network devices adjacent to network device 2 include network device 1, network device 3, and network device 5. Network device 2 is connected to network device 1, network device 3, and network device 5 respectively. Use links to connect.

Optionally, the communication network 100 includes multiple AS domains, each AS domain including multiple network devices. For example, referring to Figure 1, the communication network 100 includes AS domain 1 and AS domain 2. AS domain 1 includes network device 1, network device 2, network device 3 and network device 5. AS domain 2 includes network device 4, network device 6 and Network equipment7.

The network devices in the communication network 100 have a message forwarding function. Optionally, the network devices in the communication network 100 include routers and/or switches.

For example, referring to Figure 2, network device 1 receives network traffic 1, source device 1 of network traffic 1 is connected to network device 1, and destination device 1 of network traffic 1 is connected to network device 7. Assume that network device 1, network device 2, network device 3, network device 4 and network device 7 are all nodes on the transmission path of network traffic 1. In this way, network device 1 forwards network traffic 1 from source device 1 to network device 2, network device 2 receives network traffic 1 and forwards network traffic 1 to network device 3, and network device 3 receives network traffic 1 and forwards network traffic to network device 4. 1. Network device 4 receives network traffic 1 and forwards network traffic 1 to network device 7. Network device 7 receives network traffic 1 and forwards network traffic 1 to destination device 1.

Referring to FIG. 3 , communication network 100 also includes a controller 8 that communicates with one or more network devices in communication network 100 . The controller 8 is used to control and/or manage network devices in the communication network 100. For example, the controller 8 determines a transmission path for transmitting network traffic in the communication network 100, and sends a message to the communication network through which the transmission path passes. One or more network devices in 100 issue routing information related to the transmission path, so that the one or more network devices forward the network network traffic.

Next, still taking the above-mentioned network traffic 1 as an example, see Figure 3, the controller 8 receives a path establishment request sent by the source device 1. The path establishment request includes the destination address of the network traffic 1 (which is the address of the destination device 1). Based on The destination address calculates a transmission path between source device 1 and destination device 1, which passes through network device 1, network device 2, network device 3, network device 4 and network device 7. The controller 8 delivers the routing information related to the transmission path to the network device 1, the network device 2, the network device 3, the network device 4 and the network device 7. In this way, after receiving the network traffic 1 sent by the source device 1, the network device 1 uses the transmission path to send the network traffic 1 to the destination device 1.

For each network device in the communication network 100, the network device includes a power interface through which power is supplied to the network device. Optionally, the energy type of the power supply for the network device may be renewable energy or non-renewable energy.

The network equipment in the communication network 100 can be divided into two parts according to the energy type of the power supply energy. For convenience of explanation, the two parts of network equipment are called the first part of network equipment and the second part of network equipment respectively. The energy type of the first part of the network equipment power supply energy is renewable energy, and the energy type of the second part of the network equipment power supply energy is non-renewable energy.

Renewable energy includes wind power energy, hydropower energy, solar power energy, tidal power power energy and/or geothermal power power energy, etc., so for any network device in the first part of the network device, the energy type of the network device power supply energy may be Wind power energy may be hydropower energy, solar power energy, tidal power power, or geothermal power energy, etc.

The stability of renewable energy is poor. For example, for solar power energy, only stable solar power energy can be provided for network equipment on a clear day due to sufficient sunlight, but it cannot be provided at other times (such as night, cloudy or rainy days, etc.) Provide stable solar power energy for network equipment. For another example, for hydropower energy, there is often sufficient hydropower energy in seasons with abundant rain. At this time, the communication network 100 may have more network equipment. The energy type of power supply energy is hydropower energy. At other times (such as dry seasons, etc.) There may not be sufficient hydropower energy, and the communication network 100 may have a small number of network devices that are powered by hydropower energy. For example, for wind power energy, stable wind power energy can be provided for network equipment only during windy periods, but stable wind power energy cannot be provided for network equipment during non-windy periods.

Due to the poor stability of renewable energy, for any network device in the communication network 100, the energy type of the energy supplied by the network device may be renewable energy during a period of time, and the energy type of the energy supplied by the network device during another period of time. The type may change from renewable to non-renewable energy. For example, for solar power energy, the energy type of the power supply energy for the network equipment during the clear day is solar power energy, and at night the energy type of the power supply energy for the network equipment changes to coal power energy.

Since the energy type of the energy supplied by the network equipment in the communication network 100 may be constantly changing, in this embodiment of the present application, the energy type of the energy supplied by the network equipment in the communication network 100 is determined. The transmission path of the network traffic transmitted in the communication network 100 is adjusted based on the energy type, so that the network traffic in the communication network 100 can be converged on network equipment powered by renewable energy. In this way, the renewable energy utilization rate of the communication network 100 is improved, making the communication network 100 more low-carbon and environmentally friendly. For the detailed implementation process, please refer to any of the embodiments introduced below.

Referring to Figure 4, an embodiment of the present application provides a communication method 400. The method 400 is applied to the communication network 100 shown in Figure 1, Figure 2 or Figure 3, and includes the following process.

Step 401: The first device determines the first energy type of the power supply energy of the first device. The first device is a network device with a message forwarding function in the communication network, and the first energy type is renewable energy.

Optionally, the first device periodically determines the energy type of the energy supplied by the first device.

Step 402: The first device sends a first notification message, and the first notification message indicates the first energy type.

Step 403: The second device receives the first notification message, and determines the transmission path of the first network traffic based on the first notification message. The transmission path of the first network traffic passes through the first device.

Optionally, when the determined energy type is the first energy type, the first device indicates that the power supply energy of the first device is renewable energy. However, as time goes by, the renewable energy becomes unstable, and the first device may switch the power supply energy of the first device from renewable energy to non-renewable energy. That is to say, after step 401, the first device determines that the energy type of the energy supplied by the first device may change to the second energy type, and the second energy type is non-renewable energy.

Optionally, the first device sends a second notification message when the determined energy type is the second energy type, the second notification message indicates the second energy type, and the second energy type is non-renewable energy. Referring to Figure 5, after step 403, the communication method 400 may also include the following steps 404-405.

Step 404: When the determined energy type changes from the first energy type to the second energy type, the first device sends a second notification message, and the second notification message indicates the second energy type.

Step 405: The second device receives the second notification message and determines the transmission path of the second network traffic based on the second notification message. The transmission path of the second network traffic does not pass through the first device.

Optionally, the first device sends the first notification message when the determined energy type is the first energy type, and stops sending the first notification message when the determined energy type changes from the first energy type to the second energy type, At the same time, the second notification message will not be sent. Referring to Figure 6, after step 403, the communication method 400 may also include the following step 406.

Step 406: When the duration of not receiving the first notification message reaches the specified duration threshold, the second device determines the transmission path of the second network traffic. The transmission path of the second network traffic does not pass through the first device.

In this embodiment of the present application, since the first device can determine the energy type of the energy supplied by the first device, when the determined energy type is the first energy type, it sends the first notification message, and the first notification message indicates the first energy type. for renewable energy. The second device receives the first notification message and determines the transmission path of the first network traffic based on the first notification message. The transmission path of the first network traffic passes through the first device, so that the first device can receive and forward the first network traffic. First network traffic. Since the first energy type of the power supply energy of the first device is renewable energy, as much network traffic as possible can be adjusted to the first device powered by renewable energy based on the energy type of the power supply energy of the first device, so as to allow the third One device forwards more network traffic, improves the utilization of renewable energy, and makes the communication network more low-carbon and environmentally friendly.

Regarding the method 400 shown in FIG. 4, FIG. 5 or FIG. 6, the following embodiments of the present application will describe each step in the method 400 in conjunction with the communication network 100 shown in FIG. 1, FIG. 2 or FIG. 3.

For the above step 401, the first device periodically determines the energy type of the energy supplied by the first device based on the first period length.

Optionally, the first period length is a specified time length. Alternatively, the first period length is a time length configured according to actual needs. For example, the controller may configure the first period length on the first device based on actual needs.

In the above step 401, the first device includes a power interface, which is connected to power sources of different energy types. The first device detects the power energy currently supplying power to the power interface of the first device, and obtains the energy type of the power supply energy of the first device. .

In step 401, the first device determines that the energy type of the energy supplied by the first device is the first energy type. The first type of energy is renewable energy. Renewable energy includes a variety of energy sources, including wind power energy, hydropower energy and solar power energy. Source et al. There are multiple types of first energy types, and the multiple first energy types are wind power energy, hydropower energy, solar power energy, etc.

For example, referring to Figure 2 or Figure 3, assume that the first device is the network device 5 in the communication network 100, and the power supply energy of the network device 5 is coal and electricity energy. Referring to Figure 7 or Figure 8, assuming that the power supply energy of the network device 5 changes from coal power energy to hydropower energy, the network device 5 determines that the first energy type of the power supply energy of the network device 5 is hydropower energy.

For the above step 402, the first device sends a first notification message indicating the first energy type to the second device, and the first notification message is used to notify the second device that the energy type of the power supply energy of the first device is the first Energy type. For the above step 404, when the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device sends a second notification message indicating the second energy type to the second device. The second notification message corresponds to the first notification message.

Optionally, the first device sends a notification message when determining the energy type of the energy supplied by the first device. Alternatively, the first device determines that the energy types of the energy supplied by the first device are the same in multiple consecutive cycles and sends a notification message indicating the determined energy type.

That is to say: in step 402, the first device sends the first notification message in the following two ways. The two ways are respectively.

In a first manner, when the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device sends a first notification message indicating the first energy type.

Optionally, in the first manner, when the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device sends the first notification message. When the first device determines that the energy type of the energy supplied by the first device changes from the first energy type to the second energy type, the first device stops sending the first notification message, and the second energy type is non-renewable energy. Wherein, the first device may not send a second notification message indicating the second energy type, so that when the second device does not receive the first notification message for multiple cycles, the second device determines that the first device is powered by The energy type of the energy source changes from the first energy type to the second energy type. Alternatively, in step 404, when the second device determines the second energy type of the energy supplied by the first device, the first device sends a second notification message indicating the second energy type.

In a second manner, when the first device determines that the energy type of the energy supplied by the first device is the first energy type for multiple consecutive cycles, the first device sends a first notification message indicating the first energy type.

Similarly, in step 404, after the energy type determined by the first device changes from the first energy type to the second energy type and the energy types determined in multiple consecutive periods are all the second energy type, the first device sends A second notification message used to indicate the second energy type.

Optionally, when the first energy type determined by the first device in multiple consecutive cycles is the same, the first device sends a first notification message indicating the first energy type. The first energy type determined by the first device in multiple consecutive cycles is the same, which means that the first energy type determined by the first device in multiple consecutive cycles is the same renewable energy source, and it means that this renewable energy source is relatively stable at present, Able to continuously power the first device.

For example, when the first energy type determined by the first device for X consecutive periods is hydroelectric energy, the first device sends a first notification message, and the first notification message is used to indicate that the first energy type is hydropower energy, and X is An integer greater than 1 indicates that the current hydropower energy is relatively stable and can continue to provide hydropower energy to the first device. When the first energy type determined by the first device for X consecutive periods is wind power energy, the first device sends a first notification message. The first notification message is used to indicate that the first energy type is wind power energy, indicating the current wind power energy. It is relatively stable and can continue to provide wind power energy to the first equipment. Or, in The first energy type determined by the first device for X consecutive periods is solar power energy. The first device sends a first notification message. The first notification message is used to indicate that the first energy type is solar power energy, indicating the current solar power. The energy is relatively stable and can continuously provide solar power energy to the first equipment.

Optionally, X is a specified integer value, or X is an integer value configured according to actual requirements. For example, the controller configures the value of X on the first device according to actual requirements.

Among them, when the first device determines that the energy type of the power supply energy of the first device is the first energy type for multiple consecutive cycles, it indicates that the current renewable energy is relatively stable and can provide stable power supply energy to the first device. At this time, the first device sends the first notification message indicating the first energy type, which not only reduces the number of sending notification messages, but also avoids frequent adjustment of the transmission path of network traffic in the communication network.

Optionally, in the above first manner or the second manner, when the power supply energy of the first device changes, the first device sends a first notification message or a second notification message to notify the power supply energy of the first device. When implemented:

Before performing step 401, the first device records the energy type of the energy supplied by the first device before the current one. For the above first method, in step 402, the first device determines that the energy type of the energy supplied by the first device is the first energy type. If the energy type recorded by the first device is different from the first energy type, the first device sends the first energy type. A notification message is sent, and the recorded energy type is updated to the first energy type. If the energy type recorded by the first device is the same as the first energy type, stop sending the first notification message. Also in step 404, when the first device determines that the energy type of the energy supplied by the first device is the second energy type, if the energy type recorded by the first device is different from the second energy type, the first device sends a second notification report document and update the recorded energy type to the second energy type. If the energy type recorded by the first device is the same as the second energy type, then stop sending the second notification message.

For the above second method, in step 402, after the first device determines that the energy type of the energy supplied by the first device is the first energy type in multiple consecutive cycles, if the energy type recorded by the first device and the first energy type Differently, the first device sends a first notification message and updates the recorded energy type to the first energy type. If the energy type recorded by the first device is the same as the first energy type, stop sending the first notification message. Also in step 404, after the first device determines that the energy type of the energy supplied by the first device is the second energy type in multiple consecutive cycles, if the energy type recorded by the first device is different from the second energy type, it means After the energy type determined by the first device changes from the first energy type to the second energy type and the energy types determined in multiple consecutive cycles are all the second energy type, the first device sends a second notification message and The recorded energy type is updated to the second energy type. If the energy type recorded by the first device is the same as the second energy type, then stop sending the second notification message.

In step 402, there may be the following three relationships between the first device and the second device. The first relationship is that the first device and the second device are devices in the same AS domain. For convenience of explanation, the location where the first device is located is The AS domain is called the first AS domain, that is, the first device and the second device are both located in the first AS domain. The second relationship is that the first device and the second device are devices in two different AS domains. For convenience of explanation, the AS domain where the first device is located is called the first AS domain, and the AS domain where the second device is located is called the first AS domain. The second AS domain, the first AS domain and the second AS domain are different. The third relationship is that the first device is a device in the first AS domain, and the second device is a controller.

Next, the structures of the first notification message and the second notification message under these three relationships will be introduced in detail.

Regarding the above first relationship, the first device and the second device are both devices in the first AS domain, and the second device includes other devices in the first AS domain except the first device. That is to say: the first device sends the first notification message to the device in the first AS domain.

For the first relationship, the first advertisement message is an IGP message, and the first device broadcasts it to The device broadcasts a first advertisement message. The first advertisement message includes identification information of a link with the first device as an endpoint and a first cost (cost) value of the link. The first cost value corresponds to the first energy type. .

Optionally, the IGP message is an OSPF message and/or an IS-IS message.

Optionally, the link includes two endpoints, one of which is the first device and the other endpoint is a neighbor device of the first device, and the identification information of the link includes the device identifier of the first device and the device identifier of the neighbor device. wait. The device identification of the first device includes the address and/or serial number of the first device, and the device identification of the neighbor device includes the address and/or serial number of the neighbor device.

Optionally, the first advertisement message includes a first TLV, and the first TLV includes identification information of the link and/or a first cost value of the link.

Optionally, the first TLV is a first link status TLV or a first node status TLV. That is, the first advertisement message includes the first link status TLV, and the first link status TLV includes the identification information of the link and/or the first cost value of the link. Alternatively, the first notification message includes a first node status TLV, and the first node status TLV includes identification information of the link and/or a first cost value of the link.

Wherein, after the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device generates the first notification message. At this time, the first link status TLV in the first notification message includes the The third cost value of the link. The third cost value is the cost value configured in advance for the link. Before sending the first advertisement message, the first device reduces the third cost value to obtain the first cost value, so that the first link status TLV in the first advertisement message includes the first cost value of the link. or,

After the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device generates a first notification message. At this time, the first node status TLV of the first notification message includes the first node status TLV of the link. Three cost values. Before sending the first advertisement message, the first device reduces the third cost value to obtain the first cost value, so that the first node status TLV in the first advertisement message includes the first cost value of the link.

Optionally, the first device may adopt any one of the following methods 1 to 3 to reduce the third cost value to obtain the first cost value, where the methods 1 to 3 are respectively.

Method 1: The first device includes an energy saving factor corresponding to the first energy type (renewable energy). The energy saving factor corresponding to the first energy type is a decimal greater than 0 and less than 1, and the link in the first notification message is The third cost value is multiplied by the energy saving factor corresponding to the first energy type to obtain the first cost value.

There are multiple first energy types, and the energy saving factors corresponding to each first energy type are the same, or the energy saving factors corresponding to each first energy type are different. For example, the plurality of first energy types include hydropower energy, wind power energy, solar power energy, and the like. The energy saving factor corresponding to hydropower energy is "0.5", the energy saving factor corresponding to wind power energy is "0.5", the energy saving factor corresponding to solar power energy is "0.5", etc., the energy saving factor corresponding to each first energy type is "0.5" . Or, the energy-saving factor corresponding to hydropower energy is "0.7", the energy-saving factor corresponding to wind power energy is 0.6, the energy-saving factor corresponding to solar power energy is "0.5", etc. The energy-saving factor corresponding to each first energy type is different.

For example, see Figure 7. The link with network device 5 as the endpoint includes link 1 and link 2. The third cost value configured in advance for link 1 is 1, and the third cost value configured for link 2 is 1. . The network device 5 determines that the energy type of the power supply energy of the network device 5 is hydroelectric energy, and generates a first notification message. The first node status TLV of the first notification message includes the identification information of link 1 and the third cost value "1", and the identification information of link 2 and the third cost value "1". The first device multiplies the third cost value "1" of link 1 in the first advertisement message by the energy saving factor "0.5" corresponding to the hydropower energy to obtain the first cost value "0.5" of link 1, and adds the first cost value "0.5" to link 1. The third cost value "1" of link 2 in a notification message is multiplied by the energy saving factor "0.5" corresponding to hydropower energy to obtain the first cost value "0.5" of link 2. Network device 5 broadcasts the first notification message to the network devices in AS domain 1.

Method 2: For the third cost value included in the first advertisement message, the first device sets the value of the highest Y bit of the third cost value to 0 to obtain the first cost value, Y is an integer greater than 0, and Y is less than the number of bits included in the third cost value.

Method 3: The first device includes an offset value corresponding to the first energy type (renewable energy). For the third cost value included in the first notification message, the first device reduces the third cost value corresponding to the first energy type. The offset value gets the first cost value.

There are multiple first energy types, and the offset values corresponding to each first energy type are the same, or the offset values corresponding to each first energy type are different. For example, the offset value corresponding to hydropower energy is "0.5", the offset value corresponding to wind power energy is "0.5", the offset value corresponding to solar power energy is "0.5", etc., that is, the offset value corresponding to each first energy type The shift values are the same. Or, the offset value corresponding to hydropower energy is "0.7", the offset value corresponding to wind power energy is "0.6", the offset value corresponding to solar power energy is "0.5", etc., that is, the offset value corresponding to each first energy type The shift values are different.

Optionally, the first TLV is a first energy-saving factor TLV, and the first energy-saving factor TLV is a TLV extended in the first advertisement message. That is, the first energy saving factor TLV in the first advertisement message includes the identification information of the link and/or the first cost value of the link.

There are multiple first energy types. Each first energy type corresponds to a first energy saving factor TLV. For the first energy saving factor TLV corresponding to any first energy type, the first energy saving factor TLV includes the identification information of the link. and/or the first cost value corresponding to the first energy type.

For example, see Figure 9(a). When the first energy type is wind power energy, the first notification message includes the first energy saving factor TLV corresponding to the wind power energy. The first energy saving factor TLV includes type (Type), length (Length) and There are three subfields of value (Value). The Value subfield of the first energy saving factor TLV includes the first cost value corresponding to the wind power energy.

Referring to Figure 9(b), when the first energy type is hydropower energy, the first notification message includes the first energy saving factor TLV corresponding to the hydropower energy. The first energy saving factor TLV includes three subfields: Type, Length and Value. The first The Value subfield of the energy saving factor TLV includes the first cost value corresponding to hydropower energy.

Referring to Figure 9(c), when the first energy type is solar electric energy, the first notification message includes the first energy saving factor TLV corresponding to the solar electric energy. The first energy saving factor TLV includes three subfields: Type, Length and Value. The Value subfield of the first energy saving factor TLV includes the first cost value corresponding to the solar power energy.

Optionally, when the first TLV is the first energy-saving factor TLV, the first notification message may also include a first node status TLV, and the first node status TLV includes identification information of the link and/or a third cost value. ; and/or, the first advertisement message may also include a first link status TLV, and the first link status TLV includes identification information of the link and/or a third cost value. That is to say, the first advertisement message includes both the first node status TLV and the first energy saving factor TLV, or the first advertisement message includes both the first link status TLV and the first energy saving factor TLV. The first cost value in the first notification message is smaller than the third cost value.

Optionally, for the two fields of the first link status TLV and the first energy saving factor TLV, the two fields are distinguished by the type of the field (Type), and the first link status TLV includes the type of the first link status TLV. , the first energy saving factor TLV includes the type of the first energy saving factor TLV, and the two fields include different types.

Optionally, for the two fields of the first node status TLV and the first energy saving factor TLV, the two fields are distinguished by the type of the field. The first node status TLV includes the type of the first node status TLV, and the first energy saving factor TLV Including the type of the first energy-saving factor TLV, the two fields include different types.

Optionally, for any first TLV among the above-mentioned first node status TLV, first link status TLV or first energy saving factor TLV, the first TLV includes a first sub-TLV and a second sub-TLV, and the first sub-TLV The TLV includes identification information of the link, and the second sub-TLV includes the first cost value.

Regarding the first relationship mentioned above, the second advertisement message is the same as the first advertisement message and is also an IGP message. The first device sends the second advertisement message to the device in the first AS domain.

Optionally, the first device broadcasts a second notification message to the devices in the first AS domain in a broadcast manner. The second notification message includes identification information of a link with the first device as an endpoint and a second cost of the link. value, and the second cost value corresponds to the second energy type.

Optionally, the second advertisement message includes a second TLV, and the second TLV includes identification information of the link and/or a second cost value of the link.

Optionally, the second TLV is a second link status TLV or a second node status TLV. In the case where the first advertisement message includes the first link status TLV, the second advertisement message includes the second link status TLV, and the second link status TLV includes the identification information of the link and/or the third link status of the link. 2 cost value. Or, in the case where the first notification message includes the first node status TLV, the second notification message includes the second node status TLV, and the second node status TLV includes the identification information of the link and/or the second node status TLV of the link. cost value.

After the first device determines that the energy type of the energy supplied by the first device is the second energy type, the first device generates a second notification message. At this time, the second link status TLV of the second notification message includes the link status TLV. The third cost value of the road. Before sending the second advertisement message, the first device adds the third cost value to obtain the second cost value, so that the second link status TLV in the second advertisement message includes the second cost value of the link. or,

After the first device determines that the energy type of the energy supplied by the first device is the second energy type, the first device generates a second notification message. At this time, the second node status TLV in the second notification message includes the link's The third cost value. Before sending the second advertisement message, the first device adds the third cost value to obtain the second cost value, so that the second node status TLV in the second advertisement message includes the second cost value of the link.

Optionally, the first device may adopt any one of the following methods A to C to add the third cost value to obtain the second cost value. The methods A to C are respectively.

Method A, the first device includes an energy saving factor corresponding to the second energy type (non-renewable energy), the energy saving factor corresponding to the second energy type is a value greater than 1, and the third element of the link in the second notification message is The cost value is multiplied by the energy saving factor corresponding to the second energy type to obtain the second cost value.

For example, see Figure 10. The link with network device 5 as the endpoint includes link 1 and link 2. The third cost value configured in advance for link 1 is 1, and the third cost value configured for link 2 is 1. . Network device 5 determines that the energy type of the power supply energy of network device 5 is coal and electricity energy, and generates a second notification message. The first node status TLV in the second notification message includes the identification information of link 1 and the third cost value "1 ”, as well as the identification information of link 2 and the third cost value “1”. Assume that the energy saving factor corresponding to coal power energy is "1.5". The first device multiplies the third cost value "1" of link 1 in the second notification message by the energy saving factor "1.5" corresponding to coal power energy to obtain the link The second cost value "1.5" of link 1, and the third cost value "1" of link 2 in the second notification message are multiplied by the energy saving factor "1.5" corresponding to the coal power energy to obtain the third cost value of link 2. The second cost value is "1.5". Network device 5 broadcasts the second notification message to the network devices in AS domain 1.

Method B, for the third cost value included in the second advertisement message, the first device sets the value of the highest Z bit of the third cost value to 1 to obtain the second cost value, Z is an integer greater than 0, and Z is less than the number of bits included in the third cost value.

Method C, the first device includes an offset value corresponding to the second energy type (non-renewable energy). For the third cost value included in the second notification message, the first device increases the third cost value corresponding to the second energy type. The offset value gets the second cost value.

Optionally, the second TLV is a second energy-saving factor TLV, and the second energy-saving factor TLV is a TLV extended in the second advertisement message. That is, the second energy-saving factor TLV in the second advertisement message includes the identification information of the link and/or the second cost value.

Optionally, when the second TLV is the second energy-saving factor TLV, the second notification message may also include a second node status TLV, and the second node status TLV includes the identification information of the link and/or the link's The third cost value; and/or the second advertisement message may also include a second link status TLV, and the second link status TLV includes identification information of the link and/or a third cost value of the link. That is to say, the second advertisement message includes the second node status TLV and the second energy saving factor TLV at the same time, or the second advertisement message includes the second link status TLV and the second energy saving factor TLV at the same time. The second cost value in the second notification message is greater than the third cost value.

Optionally, for the two fields of the second link state TLV and the second energy saving factor TLV, the two fields are distinguished by the type of the field (Type), and the second link state TLV includes the type of the second link state TLV. , the second energy-saving factor TLV includes the type of the second energy-saving factor TLV, and the two fields include different types.

Optionally, for the two fields of the second node status TLV and the second energy saving factor TLV, the two fields are distinguished by the type of the field. The second node status TLV includes the type of the second node status TLV, and the second energy saving factor TLV Including the type of the second energy-saving factor TLV, the two fields include different types.

Optionally, for any one of the above-mentioned second node status TLV, second link status TLV or second energy saving factor TLV, the second TLV includes a third sub-TLV and a fourth sub-TLV, and the third sub-TLV Includes identification information of the link, and the fourth sub-TLV includes the second cost value.

Optionally, the first TLV in the first advertisement message and the second TLV in the second advertisement message are TLVs of the same type. That is, when the first TLV is the first node status TLV, the second TLV is the second node status TLV; when the first TLV is the first link status TLV, the second TLV is the second link status TLV; when the first TLV is the first link status TLV, When the TLV is the first energy-saving factor TLV, the second TLV is the second energy-saving factor TLV.

Regarding the above second relationship, the first device is a device in the first AS domain, and the second device is a device in the second AS domain. That is to say, the first device sends the first notification message to the device in the second AS domain.

Before the first device sends the first notification message, the second device sends capability information of the second device to the first device, where the capability information is used to indicate that the second device has the capability to process the first notification message. When the first device receives the capability information and determines based on the capability information that the second device has the ability to process the first notification message, it sends the first notification message to the second device.

In the second relationship, the first advertisement message is a BGP message, and the second advertisement message, like the first advertisement message, is also a BGP message. In step 404, the first device sends a second notification message to the device in the second AS domain.

Regarding the above third relationship, the first device is a device in the first AS domain, and the second device is the controller. That is to say, the first device sends the first notification message to the controller.

Before the first device sends the first notification message, the controller sends the controller's capability information to the first device, and the capability information is used to indicate that the controller has the ability to process the first notification message. When the first device receives the capability information and determines that the controller has the capability to process the first notification message based on the capability information, it sends the first notification message to the controller.

In the third relationship, the first advertisement message is a BGP message, and the second advertisement message, like the first advertisement message, is also a BGP message. In step 404, the first device sends a second notification message to the controller.

For the second relationship or the third relationship, the first notification message is used to indicate that the energy type of the power supply energy of the first device is the first energy type, and the second notification message is used to indicate the energy type of the power supply energy of the first device. The type is the second energy type. Alternatively, the first advertisement message is used to indicate that the energy type corresponding to the routing information saved by the first device is the first energy type, and in step 404, the second advertisement message is used to indicate that the energy type corresponding to the routing information saved by the first device is the first energy type. The energy type is a second energy type.

Optionally, any one of the following methods 1 to 3 is used to make the first notification message indicate the first energy type, and to make the second notification message indicate the second energy type.

In Method 1, the first advertisement message is used to carry device attributes. The first advertisement message includes a first newly added router attribute field, and the first newly added router attribute field includes a first energy type.

In method 1, a new device attribute is added. The device attribute is the energy type of the power supply energy of the first device. The first new router attribute field is a device attribute field expanded in the first advertisement message. The first new router attribute field is a device attribute field expanded in the first advertisement message. The router attribute field includes an energy type (first energy type) of power supply energy for the first device.

For example, referring to Figure 8, assuming that the second device is a controller, the network device 5 determines that the energy type of the power supply of the network device 5 is hydropower energy, and generates a first notification message. The first notification message includes the first newly added router attribute field. , the first energy type included in the first newly added router attribute field is hydroelectric energy. The network device 5 sends the first notification message to the controller.

For the second advertisement message sent by the first device in step 404, the second advertisement message is also used to carry attributes of the device. The second advertisement message includes a second new router attribute field, and a second new router attribute field. Includes secondary energy type.

The second newly added router attribute field is a device attribute field extended in the second advertisement message. For example, referring to Figure 11, assume that the network device 5 determines that the energy type of the power supply energy of the network device 5 has changed from hydropower energy to coal power energy, and generates a second notification message. The second notification message includes a second newly added router attribute field. 2. The second energy type included in the newly added router attribute field is coal and electricity energy. The network device 5 sends a second notification message to the controller.

Method 2, the first advertisement message is used to carry the segment routing internet protocol version 6, SRv6 Policy. The first advertisement message includes the first color field, and the first color field includes the first Energy type.

Optionally, the value of the first color field is a first value, and the first value is used to indicate the first energy type.

Optionally, the first color field is a TLV field. There are multiple first energy types, and each first energy type corresponds to a different first color field. The first energy type can be divided into types such as hydropower energy, wind power energy or solar power energy. Referring to Figure 12(a), the first color field is the TLV field corresponding to wind power energy, or, referring to Figure 12(b), the first color field is the TLV field corresponding to hydropower energy, or, referring to Figure 12(c), the One color field is the TLV field corresponding to the solar power energy.

Optionally, the values of the first color field are different, and the first energy types indicated by the first color field are different. For example, the first value includes the color value of wind power, the color value of hydropower, or the color value of solar energy, etc. The color value of wind power is used to indicate wind power energy, the color value of hydropower is used to indicate hydropower energy, and the color value of solar energy is used to indicate Solar electric energy.

For example, the color value of wind power is 1, which indicates wind power energy, the color value of hydropower is 2, which indicates hydropower energy, and the color value of solar energy is 3, which indicates solar electric energy. Of course, the wind power color value, hydropower color value and solar power color value may also have other values, which will not be listed one by one here.

For example, referring to Figure 8, assuming that the second device is a controller, the network device 5 determines that the energy type of the energy supplied by the network device 5 is hydropower energy, and generates a first notification message. The first notification message includes a first color field, and the first notification message includes a first color field. The value of the color field is 2, indicating that the first energy type is hydropower energy. The network device 5 sends the first notification message to the controller.

For the second notification message sent by the first device in step 404, the second notification message is also used to carry the SRv6Policy. The second notification message includes a second color field, and the second color field includes the second energy type.

Optionally, the value of the second color field is a second value, and the second value is used to indicate the second energy type.

For example, referring to Figure 11, assume that the network device 5 determines that the energy type of the power supply energy of the network device 5 has changed from hydropower energy to coal power energy, and generates a second notification message. The second notification message includes a second color field, and the second color field The value of is 4, 4 indicates that the first energy type is coal power energy. The network device 5 sends a second notification message to the controller.

Optionally, for the two fields of the first newly added router attribute field and the first color field, use the type, type code (Typecode), address family identifier (address family identifier, AFI) or subaddress family identifier (subaddress family identifier) , SAFI) value to distinguish the two fields. The first newly added router attribute field may include the type of the first newly added router attribute field, and the first color field may include the type of the first color field, but the two fields include different types. And/or, the first newly added router attribute field may include the type code of the first newly added router attribute field, and the first color field may include the type code of the first color field, but the two fields include different type codes. And/or, the first newly added router attribute field may include AFI, and the first color field may include AFI, but the AFIs included in the two fields are different. And/or, the first newly added router attribute field may include SAFI, and the first color field may include SAFI, but the SAFI included in the two fields are different. Similarly, for the second newly added router attribute field and the second color field, the second newly added router attribute field and the second color field can also be distinguished by type, type code, AFI or SAFI.

Optionally, in method 2, extend the meaning of the color field in the SR Policy of BGP or path computation element communication protocol (PCEP) so that the value of the color field can be the first value mentioned above or second value. In this way, the color field is used to carry the energy type of the power supply energy of the first device, and the color field is the first color field in the first notification message or the second color field in the second notification message.

Optionally, the color field is the policy color (Policy Color) field in the Segment Routing Internet Protocol version 6 policy network layer reachability information (SR Policy network layer reachability information, SR Policy NLRI).

Optionally, SR Policy NLRI is BGP's multi-protocol reachable network layer reachability information (multi protocol_REACH_NLRI, MP_REACH_NLRI) or multi-protocol unreachable network layer reachability information (multi protocol_UNREACH_NLRI, MP_UNREACH_NLRI).

Optionally, in method 2, extend the meaning of the color value (Color Value) in the color extended community (Color Extended Community) in the BGP Opaque Extended Community (BGP Opaque Extended Community), so that the value of the Color Extended Community is The above-mentioned first value or second value. In this way, the Color Extended Community is used to carry the energy type of the power supply energy of the first device, and the Color Extended Community is the first color field in the first notification message or the second color field in the second notification message.

Method 3, the first advertisement message is used to announce routes to neighbors. The first AS-Path field of the first advertisement message includes m identical AS numbers, m is a multiple value corresponding to the first energy type, and m is An integer greater than 0, the AS number is used to identify the AS domain where the first device is located, that is, the AS number is the AS number of the first AS domain.

The length of the AS number of each AS domain in the communication network is the specified length, that is, the length of the AS number of each AS domain is equal. The first advertisement message includes a first AS-Path field, and the first AS-Path field is used to carry an AS number.

In method 3, m identical AS numbers are included in the first AS-Path field, and the m identical AS numbers are treated as a whole in the first AS-Path field, that is, the m identical AS numbers are regarded as An AS number whose length is m times the specified length. There are multiple first energy types. The value of m corresponding to each first energy type is different, so that the first AS-Path has different AS number lengths. Each first energy type corresponds to the same AS number length. .

In method 3, when the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device generates a first notification message, obtains m corresponding to the first energy type, and in the first notification message Add m AS numbers of the first AS domain to the first AS-Path field. At this time, the length of the first AS-Path field is equal to the total length of the m AS numbers, so that the length of the AS number included in the first AS-Path field corresponds to the first energy type. or,

In mode 3, the first device receives the third communication message sent by other network devices (such as the upstream network device of the first device). The third notification message includes the first AS-Path field, and the first AS-Path field includes the AS number of the first AS domain. When the first device determines that the energy type of the energy supplied by the first device is the first energy type, the first device obtains m corresponding to the first energy type, and adds m- in the first AS-Path field of the third notification message. 1 AS number of the first AS domain to obtain the first notification message. The length of the first AS-Path field of the first advertisement message is equal to the total length of the m AS numbers, so that the length of the AS number included in the first AS-Path field corresponds to the first energy type. A first notification message sent by the first device to a downstream network device of the first device. The downstream network device forwards the first notification message to the second device.

For example, assume that the value of m corresponding to wind power energy is 1, the value of m corresponding to hydropower energy is 2, and the value of m corresponding to solar power energy is 3. Of course, the value of m corresponding to wind power energy and the value of m corresponding to hydropower energy are The value of m corresponding to the solar power energy may also be other integer values, which will not be listed one by one here.

Assume that the AS number of the first AS domain is 300. If the first energy type determined by the first device is wind power energy, the first device adds the AS number in the first AS-Path field in the first notification message, That is, the first AS-Path field includes 300, and the length of the first AP-Path field is equal to the specified length. If the first energy type determined by the first device is hydroelectric energy, the first device adds two AS numbers in the first AS-Path field in the first notification message, that is, the first AS-Path field includes 300, 300, the length of the first AP-Path field is equal to twice the specified length. If the first energy type determined by the first device is solar power energy, the first device adds three AS numbers in the first AS-Path field in the first notification message, that is, the first AS-Path field includes 300 , 300, 300, The length of the first AP-Path field is equal to three times the specified length.

For the second advertisement message sent by the first device in step 404, the second advertisement message is also used to announce the route to the neighbor. The second AS-Path field of the second advertisement message includes n identical AS numbers. , n is a multiple value corresponding to the second energy type, and n is an integer greater than 0.

In method 3, when the first device determines that the energy type of the energy supplied by the first device is the second energy type, the first device generates a second notification message, the first device obtains n corresponding to the second energy type, and in the second Add n AS numbers of the first AS domain to the second AS-Path field of the notification message. At this time, the n AS numbers are treated as a whole in the second AS-Path field, that is, as one AS number, so that the length of the AS number included in the second AS-Path field is equal to the total length of the n AS numbers, so that The AS number length included in the second AS-Path field corresponds to the second energy type.

For example, assume that the value of n corresponding to coal power energy is 4. Of course, the value of n corresponding to coal power energy may also be other integer values, which will not be listed one by one here.

It is still assumed that the AS number of the first AS domain is 300. If the first device determines that the energy type of the power supply energy of the first device has changed from wind power energy to coal power energy, the first device generates a second notification message. In the second notification report Four AS numbers are added to the second AS-Path field in this article, that is, the second AS-Path field includes 300, 300, 300, 300, and the length of the first AP-Path field is equal to four times the specified length.

Optionally, any one of the following methods a to b is used to make the first advertisement message indicate that the energy type corresponding to the routing information saved by the first device is the first energy type, and to make the second advertisement message indicate that the energy type is the first energy type. The energy type corresponding to the routing information saved by a device is the second energy type.

In manner a, the first advertisement message includes a first path attribute field, the first path attribute field includes first routing information, the first routing information includes a first energy type, and the first routing information is routing information saved on the first device.

In method a, a path attribute (path attribute) is extended in each routing information saved on the first device, and the path attribute is the energy type of the power supply energy of the first device.

In method a, for any piece of routing information saved on the first device, for the convenience of explanation, the routing information is called is the first routing information. When determining the first energy type of the energy supplied by the first device, the first device updates the energy type of the energy supplied by the first device included in the first routing information to the first energy type.

For the second advertisement message sent by the first device in step 404, when the energy type of the power supply energy of the first device changes from the first energy type to the second energy type, the first device changes the first energy type included in the first routing information. The energy type is replaced with a second energy type, the second advertisement message includes a second path attribute field, and the second path attribute field includes second routing information. The second routing information includes the second energy type and content in the first routing information other than the first energy type.

In method b, the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the first energy type, and the first routing information is routing information stored on the first device.

In some embodiments, the first notification message includes a first community attribute field, and the first community attribute value included in the first community attribute field corresponds to the first energy type. That is to say, the first community attribute field corresponds to the first energy type, and the first community attribute field also includes routing information (first routing information) saved on the first device. In this way, the community attribute of the first advertisement message is implemented. Indicates that the energy type corresponding to the first routing information is the first energy type.

Optionally, there are multiple first energy types, and the community attribute value corresponding to each first energy type is different. For example, the community attribute value corresponding to wind power energy is 300, the community attribute value corresponding to hydropower energy is 100, and the community attribute value corresponding to solar power energy is 100. The corresponding community attribute value is 50. Of course, the community attribute value corresponding to wind power energy, the community attribute value corresponding to hydropower energy, and the community attribute value corresponding to solar power energy may also have other values, which will not be explained one by one here.

In method b, when the first device determines a first energy type, if the first device needs to notify the first energy type, the first device generates a first notification message, and in the first notification message, the first energy type is The first community attribute value included in a community attribute field is equal to the community attribute value corresponding to the first energy type, and the first community attribute field in the first advertisement message also includes routing information saved on the first device.

In method b, since each first energy type corresponds to a different community attribute value, the path priority of routing information corresponding to the same energy type can be managed uniformly based on the community attribute value. Among them, wind power energy, hydropower energy and solar power energy have different stability or different prices in different time periods or in different regions. For example, for a region, if the wind power energy in the region is relatively stable within a certain period of time, the controller uses the community attribute value corresponding to the wind power energy to uniformly increase the routing information path corresponding to the wind power energy on each network device in the region. Priority, for example, during implementation, the controller executes all routing information corresponding to the community attribute value first, thereby improving operation and maintenance efficiency.

For the second advertisement message sent by the first device in step 404, the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type.

Optionally, the second notification message includes a second community attribute field, and the second community attribute value included in the second community attribute field corresponds to the second energy type. That is to say, the second community attribute field corresponds to the second energy type, and the second community attribute field also includes the routing information (first routing information) saved on the first device. In this way, the community attribute of the second advertisement message is implemented. Indicates that the energy type corresponding to the first routing information is the second energy type.

In method b, when the first device determines that the energy type of the energy supplied by the first device is the second energy type, if the first device needs to notify the second energy type, the first device generates a second notification message, and the second notification message The second community attribute value included in the second community attribute field in the message is equal to the community attribute corresponding to the second energy type. value, and the second community attribute field in the second advertisement message also includes routing information saved on the first device.

For the above step 403, the relationship between the first device and the second device is the above-mentioned first relationship, and the first device and the second device are devices in the same AS domain. In this case, the second device is a network device with a message forwarding function in the communication network, the second device includes third routing information, and the next hop device indicated by the third routing information is not the first device or the next hop. The device does not include routing information that can reach the first device. The destination device indicated by the third routing information is the same as the destination device of the first network traffic. The first network traffic is network traffic to be forwarded by the second device.

In step 403, the second device replaces the next hop device indicated by the third routing information with a third device based on the first advertisement message. The third device is the first device or the third device includes a route that can reach the first device. Information such that the transmission path for transmitting the first network traffic passes through the first device.

During implementation, at least one routing information is stored on the second device. The second device receives the first advertisement message. The first advertisement message includes the identification information of the link with the first device as the endpoint and the first cost of the link. The second device can also obtain the link in the first AS domain. The identification information of other links and the cost value of the other links. In this way, for any piece of routing information stored on the second device, the second device calculates a transmission path that can reach the destination device based on the address of the destination device indicated by the routing information and the cost value of the link in the first AS domain. If the transmission path passes through a link with the first device as the endpoint, it is determined whether the next hop device indicated by the routing information is the third device, the third device is the first device, or the third device includes a link that can reach the first device. routing information. If the next-hop device indicated by the routing information is not the third device, use the routing information as the third routing information, and replace the next-hop device indicated by the third routing information with the third device. In this way, when the second device receives the first network traffic that needs to be sent to the destination device, the second device sends the first network traffic to the first device based on the third routing information. The first device receives the first network traffic and sends the first network traffic to the destination device. This increases the number of network traffic forwarded on the first device, which not only reduces the energy consumption of the communication network, but also improves the utilization rate of renewable energy. .

For example, referring to Figure 7, assume that network device 2 receives a first notification message sent by network device 5. The first notification message includes identification information of link 1 with network device 5 as the endpoint and the first cost value of link 1. “0.5” as well as the identification information of link 2 ending with network device 5 and the first cost value of link 2 “0.5”. Assume that network device 2 also obtains the cost value of link 3 as "2", and assumes that network device 2 stores routing information. The destination device indicated by the routing information is destination device 1, but the next destination device indicated by the routing information is The hop device is network device 3. Network device 2 calculates that it can reach destination device 1 based on the address of destination device 1, the first cost value "0.5" of link 2, the first cost value "0.5" of link 1, and the cost value "2" of link 3. The transmission path passes through network device 5, network device 6 and network device 7. That is to say, the transmission path passes through link 2 and link 1 with network device 5 as the end. Network device 2 uses this routing information as the third routing information, and the next hop device indicated by the third routing information is network device 3. Replace network device 5. Referring to Figure 7, when network device 2 receives network traffic 1, the destination device of network traffic 1 is destination device 1. Network device 2 sends network traffic 1 to network device 5 based on the third routing information, and network device 5 then sends the network traffic 1 to the destination device. Device 1 sends network traffic 1.

Optionally, the first notification message includes the first node status TLV, the second device identifies the first node status TLV in the first notification message, and obtains the identification information of the link included in the first node status TLV and the link The first cost value of the road. Alternatively, the first notification message includes the first link status TLV, the second device identifies the first link status TLV in the first notification packet, and obtains the identification information of the link included in the first link status TLV and the The first cost value of the link.

Optionally, the first notification message includes a first energy saving factor TLV and a first node status TLV. The type included in the first energy saving factor TLV and the type included in the first node status TLV are different, so that the second device can perform the first notification in the first notification message. Identification in the message The first energy saving factor TLV and the first node status TLV are obtained, and the first energy saving factor TLV is selected from the first energy saving factor TLV and the first node status TLV. or,

Optionally, the first notification message includes a first energy saving factor TLV and a first link status TLV. The type included in the first energy saving factor TLV and the type included in the first link status TLV are different, so that the second device is in the first The first energy saving factor TLV and the first link status TLV are identified in the notification message, and the first energy saving factor TLV is selected from the first energy saving factor TLV and the first link status TLV. Obtain the identification information of the link included in the selected first energy-saving factor TLV and the first cost value of the link.

For the above step 403, the relationship between the first device and the second device is the above-mentioned second relationship or the third relationship. The second device receives the first notification message based on the first notification message and the first network traffic. The destination address establishes a transmission path of the first network traffic, and the transmission path of the first network traffic passes through the first device.

Optionally, the relationship between the first device and the second device is the above-mentioned second relationship, the second device and the first device are devices in two different AS domains, and the second device has a message forwarding function. network equipment. The first network traffic is network traffic currently being transmitted by the second device and whose transmission path does not pass through the first device. Alternatively, the first network traffic is network traffic that requires the second device to establish a transmission path, and the second device is the head node of the transmission path. After the second device establishes a transmission path for the first network traffic, when receiving the first network traffic, the second device uses the transmission path to forward the received first network traffic. or,

Optionally, the relationship between the first device and the second device is the above-mentioned third relationship, the second device is a controller, and the first network traffic is network traffic that requires the controller to establish a transmission path, or, the third A network traffic is network traffic that is currently being transmitted in the communication network and whose transmission path does not pass through the first device. After the controller establishes the transmission path of the first network traffic, the controller issues the transmission path. For any network device on the transmission path, when the network device receives the first network traffic, it forwards the received first network traffic to the next hop device, and the next hop device is a node on the transmission path.

The so-called network traffic currently being transmitted refers to that a transmission path for the network traffic has been established at present, and the data of the network traffic may be transmitted using the transmission path at present, but all the data of the network traffic has not been transmitted yet.

The so-called network traffic that requires a second device (for the above-mentioned network device (such as a head node) or controller with a message forwarding function) to establish a transmission path means that the second device receives a path establishment request sent by the source device of the network traffic, This path establishment request is used to request the second device to establish a transmission path for the network traffic, but currently the second device has not established a transmission path for the network traffic; or, the transmission path of the network traffic is abnormal, and the network needs to be re-established. Traffic establishes a transmission path.

Among them, similar descriptions appear in the following text. Please refer to the meanings introduced here and will not list them one by one.

For the first network traffic that is currently being transmitted and whose transmission path does not pass through the first device, the transmission path established by the second device for the first network traffic passes through the first device, thus adjusting the network traffic being transmitted in the communication network to the first network traffic. The device is forwarded by the first device, thereby increasing the number of network traffic forwarded on the first device, thereby improving the utilization rate of renewable energy. For the first network traffic that needs to establish a transmission path, the transmission path established by the second device for the first network traffic passes through the first device, which also increases the number of network traffic forwarded on the first device, thereby improving the utilization of renewable energy. Rate.

The first advertisement message indicates that the energy type of the energy supplied by the first device is the first energy type, or the first advertisement message indicates that the energy type corresponding to the first routing information stored on the first device is the first energy type.

Optionally, when the first notification message indicates that the energy type of the power supply energy of the first device is the first energy type, the first The process of the two devices establishing the transmission path of the first network traffic is as follows.

The second device determines, based on the first notification message, that the energy type of the energy supplied by the first device is the first energy type. Select a network flow, and determine whether the network flow can be transmitted to the destination address through the first device based on the destination address of the network flow. If the network traffic can be transmitted to the destination address through the first device, the network traffic is regarded as the first network traffic. Based on the destination address of the first network traffic, a transmission path through the first device is established, and the transmission path is used as the transmission path of the first network traffic.

Optionally, when the second device is a network device with a packet forwarding function, the second device selects a network traffic from the network traffic that is being transmitted on the second device and whose transmission path does not pass through the first device, and/or , select one network traffic from the network traffic that requires the second device to establish a transmission path. Or, when the second device is a controller, the second device selects a network traffic from the network traffic that is being transmitted in the communication network and whose transmission path does not pass through the first device, and/or, from a network traffic that requires the second device to establish a transmission path. Select a network flow among the network flows.

For example, referring to Figure 8, assume that the controller receives a first notification message sent by the network device 5, and the first notification message indicates that the first energy type of the network device 5 is hydroelectric energy. Based on the first notification message, the controller determines that the energy type of the power supply energy of the network device 5 is hydroelectric energy. Referring to Figure 3, the communication network is currently transmitting network traffic 1. The transmission path of network traffic 1 does not pass through network device 5. The destination address of network traffic 1 is the address of destination device 1. Based on the destination address of the network flow 1, the controller determines that the network flow 1 can be transmitted to the destination address through the network device 5, establishes a transmission path through the network device 5, and uses the transmission path as the transmission path of the network flow 1. Referring to Figure 8, the nodes on the transmission path include network device 1, network device 2, network device 5, network device 6 and network device 7.

Optionally, in step 402, the first device may use the above method 1 to cause the first notification message to indicate that the energy type of the energy supplied by the first device is the first energy type. In this case, the first advertisement message includes a first newly added router attribute field, and the first newly added router attribute field includes a first energy type. Based on the first new router attribute field included in the first advertisement message, the second device determines that the energy type of the energy supplied by the first device is the first energy type.

For example, referring to Figure 8, assume that the controller receives a first notification message sent by the network device 5. The first notification message includes a first newly added router attribute field, and the first newly added router attribute field includes a first energy source of the network device 5. The type is hydroelectric energy. Based on the first newly added router attribute field included in the first notification message, the controller determines that the energy type of the power supply energy of the network device 5 is hydroelectric energy.

Optionally, in step 402, the first device may use the above method 2 to cause the first notification message to indicate that the energy type of the energy supplied by the first device is the first energy type. In this case, the first notification message includes a first color field, and the value of the first color field is the first value. The second device parses the first value from the first color field included in the first notification message, and determines based on the first value that the energy type of the energy supplied by the first device is the first energy type.

For example, referring to Figure 8, assume that the controller receives a first notification message sent by the network device 5. The first notification message includes a first color field, and the value of the first color field is "2". Based on the value "2" of the first color field included in the first notification message, the controller determines that the energy type of the power supply energy of the network device 5 is hydroelectric energy.

The value of the first color field is different, and the energy type determined by the second device is different. For example, the value of the first color field is the hydroelectric color value, and the energy type determined by the second device is hydroelectric energy. For another example, the value of the first color field is the color value of wind power, and the energy type determined by the second device is wind power energy. For another example, the value of the first color field is a solar color value, and the energy type determined by the second device is solar power energy.

Optionally, when the second device is the head node, for the first network traffic that needs to be forwarded by the second device, the second device may establish at least one SRv6 path for transmitting the first network traffic. The second device may receive the first One demand information, the first demand information includes a certain first energy type, and the first demand information is used to instruct the second device to preferentially use network devices whose power supply energy type is the first energy type to forward network traffic.

Optionally, the operation of the second device to establish the transmission path of the first network traffic is: after the second device receives the first network traffic, the second device selects the first network from the at least one SRv6 path based on the first requirement information. The energy type of the power supply energy of one or more network devices on the transmission path of the first network traffic is the first energy type.

Optionally, in step 402, the first device may use the above method 3 to cause the first notification message to indicate that the energy type of the energy supplied by the first device is the first energy type. In this case, the first notification message includes a first AS-Path field, and the second device determines the first energy type of the power supply energy of the first device based on the length of the AS number included in the first AS-Path field.

Optionally, the second device identifies the first AS-Path field in the first advertisement message and obtains the length of the first AS-Path field as the length of the AS number.

For example, referring to Figure 8, assume that the controller receives a first notification message sent by network device 5. The first notification message includes a first AS-Path field, and the first AS-Path field includes 300, 300, first AP-Path The length of the field is equal to twice the specified length. The controller identifies the first AS-Path field in the first advertisement message and obtains the length of the first AS-Path field as the length of the AS number. The length of the AS number is twice the specified length. Based on the length of the AS number, it is determined that the first energy type of the power supply energy for the network device 5 is hydropower energy.

Optionally, when the first advertisement message indicates that the energy type corresponding to the first routing information saved on the first device is the first energy type, the process of the second device establishing the transmission path of the first network traffic is:

The second device determines that the energy type corresponding to the first routing information is the first energy type based on the first advertisement message. The second device selects a network flow as the first network flow. The destination device of the first network flow is consistent with the first routing information indication. The destination devices are the same, and a transmission path of the first network traffic passing through the first device is established based on the destination address of the first network traffic.

Optionally, when the second device is a network device with a packet forwarding function, the second device selects the destination device and the first routing information from the network traffic that is being transmitted on the second device and whose transmission path does not pass through the first device. Indicates that the destination device is the same network traffic as the first network traffic. And/or, the second device selects, from the network traffic that requires the second device to establish a transmission path, a network traffic whose destination device is the same as the destination device indicated by the first routing information as the first network traffic. The second device establishes a transmission path of the first network flow based on the destination address of the first network flow. The transmission path of the first network flow includes a path from the second device to the first device and a path from the first device to the destination device. or,

Optionally, when the second device is a controller, the second device selects a network where the destination device is the same as the destination device indicated by the first routing information from the network traffic that is being transmitted in the communication network and whose transmission path does not pass through the first device. traffic as first network traffic. And/or, the second device selects a network traffic between the destination device and the destination device indicated by the first routing information as the first network traffic from the network traffic requiring the second device to establish a transmission path. The second device establishes a transmission path of the first network traffic based on the destination address of the first network traffic. The transmission path of the first network traffic includes a path from the source device of the first network traffic to the first device and a path from the first device to the destination device. path.

Optionally, in step 402, the first device may use the above method a to cause the first advertisement message to indicate that the energy type corresponding to the first routing information stored on the first device is the first energy type. In this case, the first advertisement message includes a first path attribute field, the first path attribute field includes first routing information, and the first routing information includes the first energy type. The second device reads the first routing information from the first advertisement message, and determines that the energy type corresponding to the first routing information is the first energy type based on the first energy type included in the first routing information.

Optionally, in step 402, the first device may use the above method b to cause the first notification message to indicate on the first device The energy type corresponding to the saved first routing information is the first energy type. In this case, the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the first energy type. The second device parses the first community attribute value and the first routing information from the first community attribute field of the first advertisement message. The first community attribute value corresponds to the first energy type, and adds the energy type corresponding to the first routing information. Determine the first energy type corresponding to the first community attribute value.

For the above step 405, the relationship between the first device and the second device is the above-mentioned first relationship, and the first device and the second device are devices in the same AS domain. In this case, the second device is a network device with a message forwarding function in the communication network, the second device includes fourth routing information, and the next hop device indicated by the fourth routing information is the first device or the next hop. The device includes routing information that can reach the first device. The destination device indicated by the fourth routing information is the same as the destination device of the second network traffic. The second network traffic is network traffic to be forwarded by the second device.

In step 405, the second device replaces the next hop device indicated by the fourth routing information with a fourth device based on the second advertisement message. The fourth device is not the first device or the fourth device does not include a path that can reach the first device. Routing information such that the transmission path for transmitting the second network traffic does not pass through the first device.

During implementation, at least one routing information is stored on the second device. The second device receives a second advertisement message, and the second advertisement message includes identification information of a link with the first device as an endpoint and a second cost of the link. The second device may also obtain identification information of other links in the first AS domain and cost values of the other links. In this way, for any piece of routing information stored on the second device, based on the address of the destination device indicated by the routing information and the cost value of the link in the first AS domain, a transmission path that can reach the destination device is calculated. If the transmission path passes through a link with the first device as the endpoint, the second device uses the routing information as the fourth routing information, and replaces the next-hop device indicated by the fourth routing information with the fourth device. The fourth device is not The first device or the fourth device does not include routing information that can reach the first device, but the fourth device includes routing information that can reach the destination device. In this way, when the second device receives the second network traffic that needs to be sent to the destination device, it sends the second network traffic to the fourth device based on the fourth routing information. The fourth device receives the second network traffic and sends the second network traffic to the destination device.

Optionally, the second notification message includes a second node status TLV, and the second device identifies the second node status TLV in the second notification message, and obtains the identification information of the link included in the second node status TLV and the link's identification information. The second cost value of the road. Alternatively, the second advertisement message includes the second link status TLV, the second device identifies the second link status TLV in the second advertisement message, and obtains the identification information of the link included in the second link status TLV and the second link status TLV. The second cost value of the link.

Optionally, the second notification message includes a second energy saving factor TLV and a second node status TLV. The second device identifies the second energy saving factor TLV and the second node status TLV in the second notification message, and obtains the second energy saving factor TLV and the second node status TLV from the second notification message. Select the second energy-saving factor TLV from the energy-saving factor TLV and the second node status TLV. Alternatively, the second advertisement message includes the second energy saving factor TLV and the second link status TLV. The second device identifies the second energy saving factor TLV and the second link status TLV in the second advertisement message, and obtains the second energy saving factor TLV and the second link status TLV from the second advertisement message. Select the second energy-saving factor TLV from the energy-saving factor TLV and the second link status TLV. Obtain the identification information of the link included in the selected second energy-saving factor TLV and the second cost value of the link.

For example, referring to Figure 10, assume that network device 2 receives a second advertisement message sent by network device 5. The second advertisement message includes identification information of link 1 with network device 5 as the endpoint and a second cost value of link 1. “1.5” as well as the identification information of link 2 ending with network device 5 and the second cost value of link 2 “1.5”. Assume that network device 2 also obtains the cost value of link 3 as "2", and assumes that network device 2 has routing information stored on it. The destination device indicated by the routing information is destination device 2, but the next destination indicated by the routing information is The hop device is network device 5. Network device 2 is based on the address and chain of destination device 2. The second cost value "0.5" of link 2, the first cost value "0.5" of link 1 and the cost value "2" of link 3 are used to calculate the transmission path that can reach the destination device 2. The transmission path passes through the network device 5 , network device 6 and network device 7. That is to say, the transmission path passes through link 2 and link 1 with network device 5 as the end. Network device 2 uses this routing information as the fourth routing information, and the next hop device indicated by the fourth routing information is network device 5. Replace network device 3. Referring to Figure 10, when network device 2 receives network traffic 2, the destination device of network traffic 2 is destination device 2. Network device 2 sends network traffic 2 to network device 3 based on the fourth routing information, and network device 3 then sends the network traffic 2 to the destination device 2. Device 2 sends network traffic 2.

For the above step 405, the relationship between the first device and the second device is the above-mentioned second relationship or the third relationship. The second device receives the second notification message based on the second notification message and the second network traffic. The destination address establishes a transmission path for the second network traffic, and the transmission path for the second network traffic does not pass through the first device.

Optionally, the relationship between the first device and the second device is the above-mentioned second relationship, the second device and the first device are devices in two different AS domains, and the second device has a message forwarding function. network equipment. The second network traffic is network traffic currently being transmitted by the second device and whose transmission path passes through the first device. Alternatively, the second network traffic is network traffic that requires the second device to establish a transmission path, and the second device is the head node of the transmission path. After the second device establishes a transmission path for the second network traffic, when receiving the second network traffic, the second device uses the transmission path to forward the received second network traffic. or,

In the case where the relationship between the first device and the second device is the above-mentioned third relationship, the second device is the controller, and the second network traffic is network traffic that requires the controller to establish a transmission path, or the second network traffic is Network traffic currently being transmitted in the communication network and whose transmission path passes through the first device. After the controller establishes the transmission path of the second network traffic, the controller delivers the transmission path. For any network device on the transmission path, when the network device receives the second network traffic, it forwards the received second network traffic to the next hop device, and the next hop device is a node on the transmission path.

The second advertisement message indicates that the energy type of the energy supplied by the first device is the second energy type, or the second advertisement message indicates that the energy type corresponding to the first routing information stored on the first device is the second energy type.

Optionally, when the second notification message indicates that the energy type of the power supply energy of the first device is the second energy type, the process of the second device establishing the transmission path of the second network traffic is.

The second device determines, based on the second notification message, that the energy type of the energy supplied by the first device is the second energy type. Select a network traffic whose transmission path passes through the first device as the second network traffic, or select the network traffic that needs to establish a transmission path as the second network traffic. Based on the destination address of the second network traffic, a transmission path of the second network traffic that does not pass through the first device is established, and the transmission path is used as the transmission path of the second network traffic.

Optionally, when the second device is a network device with a packet forwarding function, the second device selects one network traffic as the second network traffic from the network traffic that is being transmitted on the second device and whose transmission path passes through the first device. , and/or, select one network flow as the second network flow from the network flow that requires the second device to establish a transmission path. Alternatively, when the second device is a controller, the second device selects a network traffic as the second network traffic from the network traffic that is being transmitted in the communication network and whose transmission path passes through the first device, and/or, from the network traffic that requires the second The device selects one network flow among the network flows used to establish a transmission path as the second network flow.

For example, referring to Fig. 11, assume that the controller receives a second notification message sent by the network device 5, and the second notification message indicates that the second energy type of the network device 5 is coal power energy. Based on the second notification message, the controller determines that the energy type of the power supply energy of the network device 5 is coal power energy. For the network traffic 2 being transmitted in the communication network, the destination address of the network traffic 2 is the address of the destination device 2, and the transmission path of the network traffic 2 passes through the network device 5. Controller based on network traffic 2 The destination address establishes a transmission path between source device 2 and destination device 2. The nodes on the transmission path include network device 1, network device 2, network device 3, network device 4 and network device 7. The transmission path does not pass through network devices. 5.

Optionally, in step 404, the first device may use the above method 1 to cause the second notification message to indicate that the energy type of the energy supplied by the first device is the second energy type. In this case, the second advertisement message includes a second newly added router attribute field, and the second newly added router attribute field includes the first energy type. The second device determines that the energy type of the power supply energy of the first device is the second energy type based on the second new router attribute field included in the second advertisement message.

For example, referring to Figure 11, assume that the controller receives a second notification message sent by the network device 5. The second notification message includes a second newly added router attribute field, and the second newly added router attribute field includes the second energy source of the network device 5. The type is coal power energy. Based on the second newly added router attribute field included in the second advertisement message, the controller determines that the energy type of the power supply energy of the network device 5 is coal power energy.

Optionally, in step 404, the first device may use the above method 2 to cause the second notification message to indicate that the energy type of the energy supplied by the first device is the second energy type. In this case, the second notification message includes a second color field, and the value of the second color field is the second value. The second device parses the second value from the second color field included in the second notification message, and determines based on the second value that the energy type of the energy supplied by the first device is the second energy type.

For example, referring to Figure 11, assume that the controller receives a second notification message sent by the network device 5. The second notification message includes a second color field, and the value of the second color field is "4". Based on the value "4" of the second color field included in the second notification message, the controller determines that the energy type of the power supply energy of the network device 5 is coal power energy.

Optionally, in step 404, the first device may use the above method 3 to cause the second notification message to indicate that the energy type of the energy supplied by the first device is the second energy type. In this case, the second notification message includes a second AS-Path field, and the second device determines the second energy type of the power supply energy of the first device based on the length of the AS number included in the second AS-Path field.

Optionally, the second device identifies the second AS-Path field in the second advertisement message, and obtains the length of the second AS-Path field as the length of the AS number.

For example, referring to Figure 11, assume that the controller receives a second notification message sent by network device 5. The second notification message includes a second AS-Path field, and the second AS-Path field includes 300, 300, 300, 300, and The length of the AP-Path field is equal to four times the specified length. The controller identifies the second AS-Path field in the second advertisement message and obtains the length of the second AS-Path field as the length of the AS number. The length of the AS number is four times the specified length. Based on the length of the AS number, it is determined that the second energy type of the power supply energy of the network device 5 is coal power energy.

Optionally, when the second advertisement message indicates that the energy type corresponding to the routing information saved on the first device is the second energy type, the process of the second device establishing the transmission path of the second network traffic is:

The second device determines the routing information indicated by the second advertisement message based on the second advertisement message, and determines that the energy type corresponding to the routing information is the second energy type. The routing information is the routing information saved on the first device. The second device selects the network traffic transmitted using the routing information as the second network traffic, and the destination device of the second network traffic is the same as the destination device indicated by the routing information. A transmission path of the second network traffic that does not pass through the first device is established based on the destination address of the second network traffic. Alternatively, the second device selects, from the network traffic that requires the second device to establish a transmission path, the network traffic whose destination device is the same as the destination device indicated by the path information as the second network traffic, and based on the destination address of the second network traffic, establishes a different network traffic. The transmission path of the second network traffic passing through the first device.

Optionally, when the second device is a network device with a packet forwarding function, the second device selects the network traffic transmitted using the routing information as the second network traffic from the network traffic being transmitted on the second device. Or, when the second device is the controller, the second device selects a network for transmission using the routing information from network traffic being transmitted in the communication network. traffic as secondary network traffic.

Optionally, in step 404, the first device may use the above method a to cause the second advertisement message to indicate that the energy type corresponding to the routing information stored on the first device is the second energy type. In this case, the second advertisement message includes a second path attribute field, the second path attribute field includes second routing information, and the second routing information includes the second energy type. The second device reads the second routing information from the second advertisement message, and determines that the energy type corresponding to the second routing information is the second energy type based on the second energy type included in the second routing information.

Optionally, in step 404, the first device may use the above method b to cause the second advertisement message to indicate that the energy type corresponding to the routing information stored on the first device is the second energy type. In this case, the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type. The second device parses the second community attribute value and the first routing information from the second community attribute field of the second advertisement message. The second community attribute value corresponds to the second energy type, and uses the energy type corresponding to the first routing information. Determine the second energy type corresponding to the second community attribute value.

For the above step 406, the relationship between the first device and the second device is the above-mentioned first relationship, and the first device and the second device are devices in the same AS domain. In this case, the second device is a network device with a message forwarding function in the communication network, the second device includes fourth routing information, and the next hop device indicated by the fourth routing information is the first device or the next hop. The device includes routing information that can reach the first device. The destination device indicated by the fourth routing information is the same as the destination device of the second network traffic. The second network traffic is network traffic to be forwarded by the second device.

In step 406, when the second device detects that the duration of not receiving the first advertisement message reaches the specified duration threshold, it replaces the next hop device indicated by the fourth routing information with the fourth device. The fourth device is not The first device or the fourth device does not include routing information that can reach the first device, so that the transmission path for transmitting the second network traffic does not pass through the first device.

For example, referring to Figure 10, assume that the power supply energy of network device 5 changes from hydropower energy to coal power energy, and when the power supply energy of network device 5 changes from hydropower energy to coal power energy, network device 5 stops sending the first notification to network device 2 message. Assume that network device 2 stores routing information. The destination device indicated by the routing information is destination device 2, but the next-hop device indicated by the routing information is network device 5. When the duration of the first advertisement message sent by the network device 5 is not received by the network device 5 and reaches the specified duration threshold, the network device 2 uses the routing information as the fourth routing information, and uses the next hop device indicated by the fourth routing information by the network. Device 5 replaces network device 3. Referring to Figure 10, when the network device 2 receives the network traffic 2 sent by the source device 2 to the destination device 2, the network device 2 sends the network traffic 2 to the network device 3 based on the fourth routing information, and the network device 3 then sends the network traffic 2 to the destination device 2. Send network traffic 2.

The relationship between the first device and the second device is the second relationship described above. The second device and the first device are devices in two different AS domains, and the second device is a network device with a message forwarding function. When the second device detects that the duration of not receiving the first notification message reaches the specified duration threshold, the second device selects the network traffic currently being transmitted by the second device and whose transmission path passes through the first device as the second network traffic. Alternatively, the second device selects the second network traffic from the network traffic that requires the second device to establish a transmission path. Establishing a transmission path of the second network flow based on the destination address of the second network flow. or,

The relationship between the first device and the second device is the case of the third relationship described above, and the second device is the controller. When the second device detects that the duration of not receiving the first notification message reaches the specified duration threshold, the second device selects the network traffic currently being transmitted in the communication network and whose transmission path passes through the first device as the second network traffic. Or, the second device The second network traffic is selected from network traffic requiring the second device to establish a transmission path. Establishing a transmission path of the second network flow based on the destination address of the second network flow.

For example, referring to Figure 11, assume that the power supply energy of network device 5 changes from hydropower energy to coal power energy. When the power supply energy of the network device 5 changes from hydropower energy to coal power energy, the network device 5 stops sending the first notification message to the controller. Regarding the network traffic 2 being transmitted in the communication network, the network traffic 2 is the traffic sent by the source device 2 to the destination device 2, and the transmission path of the network traffic 2 passes through the network device 5. Referring to Figure 11, when the controller does not receive the first notification message sent by the network device 5 and the duration reaches the specified duration threshold, the controller establishes a link between the source device 2 and the destination device 2 based on the destination address of the network flow 2. Transmission path, the nodes on this transmission path include network device 1, network device 2, network device 3, network device 4 and network device 7. This transmission path does not pass through network device 5.

Among them, in the above step 405 or 406, since the transmission path of the second network traffic determined by the second device does not pass through the first device, the network traffic passing through the first device becomes less and less, and even no network traffic passes through the first device. equipment. When the first device does not receive network traffic to be forwarded in the first time period, the first device shuts down or sleeps, thereby reducing energy consumption.

Optionally, the time length of the first time period is a specified first time length.

Optionally, after the first device is turned off or put to sleep, the first device is turned on periodically. Alternatively, the controller may control the first device to turn on when the first device needs to be turned on. For example, when a large amount of network traffic needs to be transmitted in the communication network, the controller controls the first device to turn on.

After the first device is powered on, the network device and/or controller in the communication network can sense that the first device is powered on. Therefore, within a set period of time after the first device is powered on, a network device in the communication network may send network traffic to the first device, and the first device will receive the network traffic. Alternatively, within a set time period after the first device is powered on, the network device in the communication network may not send network traffic to the first device, and the first device may not receive network traffic within the set time period.

Optionally, the starting time of the set time period is the power-on time of the first device, and the time length of the set time period is a specified second time length.

Optionally, if the first device receives network traffic within a set time period after being powered on, the first device remains powered on. In this way, the first device forwards the received network traffic to avoid affecting the transmission of the network traffic.

Optionally, if the first device does not receive network traffic within a set time period after being powered on, the first device shuts down or goes to sleep at the end of the set time period, thereby continuing to reduce energy consumption.

In this embodiment of the present application, the first device periodically determines the energy type of the energy supplied by the first device, and sends a first notification message when the determined energy type is the first energy type. The first notification message indicates the first energy type. Type, the first energy type is renewable energy. The second device receives the first notification message and determines a transmission path of the first network traffic based on the first notification message. The transmission path of the first network traffic passes through the first device. In this way, the second device can aggregate as much network traffic in the communication network as possible to the first device. Since the first device forwards as much network traffic in the communication network as possible, and because the power supply energy of the first device is renewable energy, This not only reduces the energy consumption of the communication network, but also increases the utilization rate of renewable energy, making the communication network more low-carbon and environmentally friendly. When the energy type determined by the first device changes from the first energy type to the second energy type, indicating that the renewable energy may be unstable or stop supplying renewable energy to the first device, the first device sends a second notification message, and the second The notification message indicates the second energy type, and the second energy type is non-renewable energy. The second device receives the second advertisement message and determines the transmission path of the second network traffic based on the second advertisement message. The transmission path of the second network traffic does not pass through the first device, thereby restoring the original routing function.

Referring to Figure 13, an embodiment of the present application provides a communication device 1300. Optionally, the device 1300 is applied to a network system including the device 1300 and a second device. For example, the device 1300 and the second device in the network system are shown in Figure 1, Figure 2, Figure 3, Figure 7, Figure 8, Devices in the communication network 100 shown in Figure 10 or Figure 11. The device 1300 is the first device in the method 400 shown in Figure 4, Figure 5 or Figure 6. The device 1300 includes: a processor 1301, a memory 1302, an internal connection 1303 and a network interface 1304.

The processor 1301, the memory 1302 and the network interface 1304 are connected through an internal connection 1303. The operating system and program code are stored in the memory 1302. The at least one processor 1301 reads the operating system from the memory 1302 and runs the operating system. Optionally, the internal connection 1303 includes a bus. Optionally, the network interface 1304 can communicate with the second device 102 in the method 400 shown in FIG. 4, FIG. 5, or FIG. 6 or FIG. 7.

At least one processor 1301 reads program code from the memory 1302, and runs the program code in the operating system to determine the energy type of the energy supplied by the device 1300 and/or obtain a notification message indicating the energy type (Fig. 4. The first notification message and/or the second notification message in the method 400 shown in Figure 5 or Figure 6). And/or, at least one processor 1301 sends the notification message through the network interface 1304.

Optionally, for the detailed implementation process of the processor 1301 determining the energy type and/or obtaining the notification message, please refer to the relevant content in the embodiment shown in Figure 4, Figure 5 or Figure 6, which will not be described in detail here.

Optionally, the above-mentioned processor 1301 may be a general central processing unit (CPU), a network processor (NP), a microprocessor, or an application-specific integrated circuit (ASIC). , or one or more integrated circuits used to control the execution of the program of this application.

The internal connection 1303 includes a path for transmitting information between the components. Optionally, the internal connection 1303 may be a single board or a bus, etc.

The above-mentioned memory 1302 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions. type of dynamic storage device, which may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc Storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can be used by Any other media accessible by a computer, but not limited to this. The memory may exist independently and be connected to the processor through a bus. Memory may also be integrated with the processor.

In specific implementation, as an embodiment, the processor 1301 may include one or more CPUs, such as CPU0 and CPU1 in Figure 13 .

In specific implementation, as an embodiment, the detection device 1300 may include multiple processors, such as processor 1301 and processor 1307 in Figure 13 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In the above embodiments, the process of determining the energy type and/or obtaining the notification message may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. For example, the computer product is a software that implements a communication method and is used to be installed in Figures 1, 2, 3, 7, and 8 , on the device in the communication network 100 shown in Figure 10 or Figure 11, or installed on the first device in the method 400 shown in Figure 4, Figure 5 or Figure 6.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc. The computer instructions may be transmitted either from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center over wires (e.g., coaxial cables, fiber optics, Digital Subscriber Line (DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), etc.

Referring to Figure 14, an embodiment of the present application provides a communication device 1400. Optionally, the device 1400 is applied to a network system including the first device and the device 1400. For example, the first device and the device 1400 in the network system are shown in Figure 1, Figure 2, Figure 3, Figure 7, Figure 8, Devices in the communication network 100 shown in Figure 10 or Figure 11. The device 1400 is the second device in the method 400 shown in Figure 4, Figure 5 or Figure 6. The device 1400 includes: a processor 1401, a memory 1402, an internal connection 1403, and a network interface 1404.

The processor 1401, the memory 1402 and the network interface 1404 are connected through an internal connection 1403. The operating system and program code are stored in the memory 1402. The at least one processor 1401 reads the operating system from the memory 1402 and runs the operating system. Optionally, the internal connection 1403 includes a bus. Optionally, the network interface 1404 can communicate with the first device 102 in the method 400 shown in FIG. 4, FIG. 5, or FIG. 6 or FIG. 7.

The network interface 1404 is used to receive a notification message (the first notification message and/or the second notification message in the method 400 shown in Figure 4, Figure 5 or Figure 6. The first notification message indicates the power supply of the first device. The first energy type, the second notification message indicates the second energy type of the power supply energy of the first device). At least one processor 1401 reads the program code from the memory 1402, and determines the transmission path of the first network traffic based on the first notification message by running the program code in the operating system. The transmission path of the first network traffic passes through the first The device, and/or, determines a transmission route of the second network traffic based on the second advertisement message, and the transmission path of the second network traffic does not pass through the first device.

Optionally, for the detailed implementation process of the processor 1401 determining the transmission path of the first network traffic and/or determining the transmission path of the second network traffic, please refer to the relevant content in the embodiment shown in Figure 4, Figure 5 or Figure 6 , will not be explained in detail here.

Optionally, the processor 1401 may be a general central processing unit (CPU), a network processor (NP), a microprocessor, or an application-specific integrated circuit (ASIC). , or one or more integrated circuits used to control the execution of the program of this application.

The internal connection 1403 includes a path for transmitting information between the components. Optionally, the internal connection 1403 may be a single board or a bus, etc.

The above-mentioned memory 1402 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types of static storage devices that can store information and instructions. type of dynamic storage device, which may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data Without limitation, any other medium that may be in the form of the desired program code and capable of being accessed by a computer. The memory may exist independently and be connected to the processor through a bus. Memory may also be integrated with the processor.

In specific implementation, as an embodiment, the processor 1401 may include one or more CPUs, such as CPU0 and CPU1 in Figure 14.

In specific implementation, as an embodiment, the detection device 1400 may include multiple processors, such as processor 1401 and processor 1407 in Figure 14 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In the above embodiments, the process of determining the energy type and/or obtaining the notification message may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. For example, the computer product is a software that implements a communication method and is used to be installed in Figures 1, 2, 3, 7, and 8 , on the device in the communication network 100 shown in Figure 10 or Figure 11, or installed on the second device in the method 400 shown in Figure 4, Figure 5 or Figure 6.

Referring to Figure 15, an embodiment of the present application provides a communication device 1500. The device 1500 is applied to a network system including the device 1500 and a second device. For example, the device 1500 and the second device in the network system are Devices in the communication network 100 shown in Figure 1, Figure 2, Figure 3, Figure 7, Figure 8, Figure 10 or Figure 11 . The device 1500 is deployed on the first device in the method 400 shown in Figure 4, Figure 5 or Figure 6. The device 1500 includes a processing module 1501 and a communication module 1502.

The processing module 1501 is used to determine the first energy type of the energy supplied by the device 1500. The device 1500 is a network device with a message forwarding function in the communication network, and the first energy type is renewable energy;

The communication module 1502 is configured to send a first notification message, where the first notification message indicates the first energy type.

Optionally, the processing module 1501 determines the detailed implementation process of the first energy type. Please refer to the relevant content in step 401 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, for the detailed implementation process of the communication module 1502 sending the first notification message, please refer to the relevant content in step 402 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the communication module 1502 is also used to:

When the energy type of the power supply energy of the device 1500 changes from the first energy type to the second energy type, a second notification message is sent. The second energy type is non-renewable energy, and the second notification message indicates the second energy type. .

Optionally, for the detailed implementation process of the communication module 1502 sending the second notification message, please refer to the relevant content in step 404 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the first notification message includes identification information of a link with the device 1500 as an endpoint and a first cost value of the link, where the first cost value corresponds to the first energy type.

Optionally, the first notification message is an Interior Gateway Protocol IGP message. The first notification message includes a link status type length value TLV or a node status TLV. The first cost value is carried in the link status TLV or the node status. in TLV.

Optionally, the first notification message is an IGP message, and the first notification message includes an energy saving factor TLV, the energy saving factor TLV is an extended TLV, and the energy saving factor TLV includes the first cost value.

The communication module 1502 is also configured to send a second notification message when the energy type of the power supply energy of the device 1500 changes from the first energy type to the second energy type. The second energy type is non-renewable energy. The second notification message The message indicates the second energy type. The second advertisement message is an IGP message. The second advertisement message includes identification information of the link and a second cost value. The second cost value corresponds to the second energy type.

Optionally, the device 1500 and the second device are devices in the same autonomous system AS domain.

Optionally, the first advertisement message is a Border Gateway Protocol BGP message, the first advertisement message is used to carry device attributes, the first advertisement message includes a first newly added router attribute field, and the first newly added router attribute field includes The first type of energy.

Optionally, the communication module 1502 is also configured to send a second notification message when the energy type of the energy supplied by the device 1500 changes from the first energy type to the second energy type, and the second energy type is non-renewable energy. , the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message is used to carry the device attributes, the second advertisement message includes the second new router attribute field, the second New router attribute fields include the second energy type.

Optionally, the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy. The first advertisement message includes a first color field, and a first The color field includes the first energy type.

Optionally, the communication module 1502 is also configured to send a second notification message when the energy type of the energy supplied by the device 1500 changes from the first energy type to the second energy type, and the second energy type is non-renewable energy. , the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message is used to carry SRv6 Policy, the second advertisement message includes a second color field, and the second color field includes the Two energy types.

Optionally, the first advertisement message is a BGP message, the first advertisement message includes a first path attribute field, the first path attribute field includes first routing information, the first routing information includes a first energy type, and the first route The information is routing information saved on the device 1500 .

Optionally, the communication module 1502 is also configured to send a second notification message when the energy type of the energy supplied by the device 1500 changes from the first energy type to the second energy type, and the second energy type is non-renewable energy. , the second notification message refers to indicates the second energy type. The second advertisement message is a BGP message. The second advertisement message includes a second path attribute field. The second path attribute field includes second routing information. The second routing information includes the second energy type and the second routing information. Contents other than the first energy type in a routing information.

Optionally, the first advertisement message is a BGP message, the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the first energy type, and the first routing information is stored on the device 1500 routing information.

Optionally, the communication module 1502 is also configured to send a second notification message when the energy type of the energy supplied by the device 1500 changes from the first energy type to the second energy type, and the second energy type is non-renewable energy. , the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, and the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type.

Optionally, the first advertisement message is a BGP message. The first advertisement message is used to advertise routes to neighbors. The first autonomous system path AS-Path field of the first advertisement message includes m identical AS numbers, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the AS domain where the device is located.

Optionally, the communication module 1502 is also configured to send a second notification message when the energy type of the energy supplied by the device 1500 changes from the first energy type to the second energy type, and the second energy type is non-renewable energy. , the second advertisement message indicates the second energy type, the second advertisement message is a BGP message, the second advertisement message is used to announce routes to neighbors, and the second AS-Path field of the second advertisement message includes n The AS number, n is a multiple value corresponding to the second energy type, n is an integer greater than 0, and m is not equal to n.

Optionally, the apparatus 1500 and the second device are devices in two different AS domains.

The device 1500 embodiment described in Figure 15 is only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple modules may be combined or Integrated into another system, or some features can be ignored, or not implemented. Each functional module in each embodiment of the present application can be integrated into one module, or each module can exist physically alone, or two or more modules can be integrated into one module. Each of the above-mentioned modules in Figure 15 can be implemented in the form of hardware or in the form of software function modules. For example, when implemented in software, the above-mentioned processing module 1501 and communication module 1502 can be implemented as software function modules generated by at least one processor 1301 in FIG. 13 after reading the program code stored in the memory 1302. Each of the above modules in Figure 15 can also be implemented by different hardware in the device 1300. For example, the processing module 1501 is implemented by a part of the processing resources of at least one processor 1301 in Figure 13 (for example, one core in a multi-core processor), and The communication module 1502 uses the network interface 1304 of FIG. 13 and the remaining processing resources of at least one processor 1301 (such as other cores in a multi-core processor), or uses a field-programmable gate array (Field-Programmable Gate Array, FPGA) , or coprocessor and other programmable devices to complete. Obviously, the above functional modules can also be implemented by a combination of software and hardware. For example, the communication module 1502 is implemented by a hardware programmable device, and the processing module 1501 is a software function module generated by the CPU after reading the program code stored in the memory 1302. .

In this embodiment of the present application, since the processing module determines the first energy type of the energy supplied by the device, the device is For network equipment with a message forwarding function in a communication network, the first energy type is renewable energy. The communication module sends a first notification message, and the first notification message indicates the first energy type. Since the first notification message indicates the first energy type, for the second device that receives the first notification message, the second device can learn that the energy type of the energy supplied by the device is the first energy type based on the first notification message. The second device can use the device to forward more network traffic. The first energy type is renewable energy. This not only reduces the energy consumption of the communication network, but also improves the utilization rate of renewable energy, making the communication network low-carbon and environmentally friendly. .

Referring to Figure 16, an embodiment of the present application provides a communication device 1600. The device 1600 is applied to a network system including a first device and the device 1600. For example, the first device and the device 1600 in the network system are Devices in the communication network 100 shown in Figure 1, Figure 2, Figure 3, Figure 7, Figure 8, Figure 10 or Figure 11 . The device 1600 is deployed on the second device in the method 400 shown in Figure 4, Figure 5 or Figure 6. The device 1600 includes a communication module 1601 and a processing module 1604.

The communication module 1601 is configured to receive a first notification message. The first notification message indicates that the energy type of the power supply energy of the first device is the first energy type, the first energy type is renewable energy, and the first device is in the communication network. Network equipment with message forwarding function;

The processing module 1602 is configured to determine a transmission path of the first network traffic based on the first notification message, and the transmission path of the first network traffic passes through the first device.

Optionally, for the detailed implementation process of the communication module 1601 receiving the first notification message, please refer to the relevant content in step 403 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, for the detailed implementation process of the processing module 1602 determining the transmission path of the first network traffic, please refer to the relevant content in step 403 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the communication module 1601 is also configured to receive a second notification message, the second notification message indicates that the energy type of the power supply energy of the first device is the second energy type, and the second energy type is non-renewable energy;

The processing module 1602 is also configured to determine a transmission path of the second network traffic based on the second advertisement message. The transmission path of the second network traffic does not pass through the first device.

Optionally, for the detailed implementation process of the communication module 1601 receiving the second notification message, please refer to the relevant content in step 405 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the processing module 1602 determines the detailed implementation process of the transmission path of the second network traffic. Please refer to the relevant content in step 405 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the first advertisement message includes identification information of a link with the first device as an endpoint and a first cost value of the link, where the first cost value corresponds to the first energy type.

Optionally, the first advertisement message is an Interior Gateway Protocol IGP message, the first advertisement message includes an energy saving factor TLV, the energy saving factor TLV is an extended TLV, and the energy saving factor TLV includes the first cost value.

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The advertisement message is an IGP message, and the second advertisement message includes identification information of the link and a second cost value, and the second cost value corresponds to the second energy type;

Optionally, the first device and the device 1600 are devices in the same autonomous system AS domain.

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The advertisement message is a BGP message, and the second advertisement message is used to carry attributes of the device. The second advertisement message includes a second new router attribute field, and the second new router attribute field includes a second energy type;

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The notification message is a BGP message, and the second notification message is used to carry the SRv6 Policy. The second notification message includes a second color field, and the second color field includes the second energy type;

Optionally, the first advertisement message is a BGP message, the first advertisement message includes a first path attribute field, the first path attribute field includes first routing information, the first routing information includes a first energy type, and the first route The information is routing information saved on the first device.

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The advertisement message is a BGP message. The second advertisement message includes a second path attribute field. The second path attribute field includes second routing information. The second routing information includes a second energy type and the first energy source in the first routing information. Content outside the genre;

Optionally, the first advertisement message is a BGP message, the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the first energy type, and the first routing information is a route saved on the first device. information.

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The advertisement message is a BGP message, and the community attribute of the second advertisement message indicates that the energy type corresponding to the first routing information is the second energy type;

Optionally, the first advertisement message is a BGP message. The first advertisement message is used to advertise routes to neighbors. The first autonomous system path AS-Path field of the first advertisement message includes m identical autonomous system AS numbers. , m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the AS domain where the first device is located.

Optionally, the communication module 1601 is also configured to receive a second notification message. The second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is non-renewable energy. The advertisement message is a BGP message. The second advertisement message is used to announce routes to neighbors. The second AS-Path field of the second advertisement message includes n AS numbers, and n is the multiple corresponding to the second energy type. Numeric value, n is an integer greater than 0, m is not equal to n;

Optionally, for the detailed implementation process of the processing module 1602 determining the transmission path of the second network traffic, please refer to the relevant content in step 405 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the first device and the apparatus 1600 are devices in two different AS domains.

Optionally, the device 1600 is a network device with a message forwarding function in a communication network. The device 1600 includes third routing information, and the next hop device indicated by the third routing information is not the first device or the next hop. The device does not include routing information that can reach the first device, and the destination device indicated by the third routing information is the same as the destination device of the first network traffic.

The processing module 1602 is configured to replace the next hop device indicated by the third routing information with a third device based on the first advertisement message. The third device is the first device or the third device includes a route that can reach the first device. information.

Optionally, the processing module 1602 replaces the next hop device indicated by the third routing information with the third device. For a detailed implementation process, please refer to the relevant content in step 403 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the device 1600 is a network device with a message forwarding function in a communication network. The device 1600 includes fourth routing information, and the next-hop device indicated by the fourth routing information is the first device or the next-hop device. The hop device includes routing information that can reach the first device, and the destination device indicated by the fourth routing information is the same as the destination device of the second network traffic.

Processing module 1602, configured to replace the next hop device indicated by the fourth routing information with a fourth device based on the second advertisement message. The fourth device is not the first device or the fourth device does not include routing information that can reach the first device. .

Optionally, the processing module 1602 replaces the next hop device indicated by the fourth routing information with the fourth device. For a detailed implementation process, please refer to the relevant content in step 405 or step 406 of the method 400 shown in Figure 4, which will not be repeated here. Detailed description.

Optionally, the processing module 1602 is configured to establish a transmission path of the first network traffic based on the first advertisement message and the destination address of the first network traffic.

Optionally, for the detailed implementation process of the processing module 1602 establishing the transmission path of the first network traffic, please refer to the relevant content in step 403 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the processing module 1602 is configured to establish a transmission path of the second network traffic based on the second advertisement message and the destination address of the second network traffic.

Optionally, for the detailed implementation process of the processing module 1602 establishing the transmission path of the second network traffic, please refer to the relevant content in step 405 or step 406 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the device 1600 is a controller or the device is a head node of a transmission path of the first network traffic.

The device 1600 embodiment described in Figure 16 is only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple modules may be combined or Integrated into another system, or some features can be ignored, or not implemented. Each functional module in each embodiment of the present application can be integrated into one module, or each module can exist physically alone, or two or more modules can be integrated into one module. Each of the above-mentioned modules in Figure 16 can be implemented in the form of hardware or in the form of software function modules. For example, when implemented in software, the communication module 1601 and the processing unit 1602 may be implemented as software function modules generated by at least one processor 1401 in FIG. 14 after reading the program code stored in the memory 1402. Each of the above-mentioned modules in Figure 16 can also be implemented by different hardware in the device 1400. For example, the processing module 1602 is implemented by a part of the processing resources in at least one processor 1401 in Figure 14 (for example, one core in a multi-core processor), and The communication module 1601 uses the network interface 1404 of Figure 14 and the remaining processing resources of at least one processor 1401 (such as other cores in a multi-core processor), or uses a field-programmable gate array (Field-Programmable Gate Array, FPGA) , or coprocessor and other programmable devices to complete. Obviously, the above functional modules can also be implemented by a combination of software and hardware. For example, the communication module 1601 is implemented by a hardware programmable device, and the processing module 1602 is a software function module generated by the CPU after reading the program code stored in the memory 1402. .

In this embodiment of the present application, the communication module receives the first notification message, and the first notification message indicates that the energy type of the energy supplied by the first device is the first energy type, and the first energy type is renewable energy. The processing module determines a transmission path of the first network traffic based on the first notification message, and the transmission path of the first network traffic passes through the first device. Since the first notification message indicates the first energy type of the power supply energy of the first device, the transmission path of the first network traffic determined by the processing module based on the first notification message passes through the first device. In this way, the device can use the first device to forward more network traffic. The first energy type is renewable energy, which not only reduces the energy consumption of the communication network, but also improves the utilization rate of renewable energy, making the communication network low-carbon and environmentally friendly. .

Referring to Figure 17, an embodiment of the present application provides a communication system 1700. The system 1700 includes a device 1300 as shown in Figure 13 and a device 1400 as shown in Figure 14. Alternatively, the system 1700 includes a device as shown in Figure 15. Device 1500 and device 1600 as shown in Figure 16.

Referring to Figure 17, the device 1300 shown in Figure 13 or the device 1500 shown in Figure 15 is the first device 1701. As shown in Figure The device 1400 shown in Figure 14 or the device 1600 shown in Figure 16 is the second device 1702.

Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.

The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application. Inside.

Claims

A communication method, characterized in that the method is applied to a network system including a first device and a second device, and the method includes:

The first device determines a first energy type of the energy supplied by the first device, the first device is a network device with a message forwarding function in a communication network, and the first energy type is renewable energy;

The first device sends a first notification message, and the first notification message indicates the first energy type.
The method of claim 1, further comprising:

When the energy type of the energy supplied by the first device changes from the first energy type to a second energy type, the first device sends a second notification message, and the second energy type is non-renewable energy, The second notification message indicates the second energy type.
The method according to claim 1 or 2, characterized in that the first notification message includes identification information of a link with the first device as an endpoint and a cost value of the link, and the cost The value corresponds to the first energy type.
The method of claim 3, wherein the first notification message is an interior gateway protocol IGP message, and the first notification message includes a link status type length value TLV or a node status TLV, and the The cost value is carried in the link status TLV or the node status TLV.
The method of claim 3, wherein the first notification message is an IGP message, the first notification message includes an energy saving factor TLV, and the energy saving factor TLV is an extended TLV. The factor TLV includes the cost value.
The method according to any one of claims 1 to 5, characterized in that the first device and the second device are devices in the same autonomous system (AS) domain.
The method according to claim 1 or 2, characterized in that the first notification message is a Border Gateway Protocol BGP message, the first notification message is used to carry device attributes, and the first notification message A new router attribute field is included, and the new router attribute field includes the first energy type.
The method according to claim 1 or 2, characterized in that the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, the first notification message includes a color field, and the color field includes the first energy type.
The method according to claim 1 or 2, characterized in that the first advertisement message is a BGP message, the first advertisement message includes a path attribute field, and the path attribute field includes first routing information, The first routing information includes the first energy type, and the first routing information is routing information saved on the first device.
The method according to claim 1 or 2, characterized in that the first advertisement message is a BGP message, and the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the The first energy type, the first routing information is routing information saved on the first device.
The method according to claim 1 or 2, characterized in that the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the autonomy of the first advertisement message The system path AS-Path field includes m identical AS numbers, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the location where the first device is located. AS domain.
The method of claim 1, 2, 7, 8, 9, 10 or 11, wherein the first device and the second device are devices in two different AS domains.
A communication method, characterized in that the method is applied to a network system including a first device and a second device, and the method includes:

The second device receives a first notification message, the first notification message indicates that the energy type of the energy supplied by the first device is a first energy type, the first energy type is renewable energy, and the third One device is a network device with a message forwarding function in the communication network;

The second device determines a transmission path of the first network traffic based on the first notification message, and the transmission path of the first network traffic passes through the first device.
The method of claim 13, further comprising:

The second device receives a second notification message, and the second notification message indicates that the energy type of the energy supplied by the first device is a second energy type, and the second energy type is a non-renewable energy source;

The second device determines a transmission path of the second network traffic based on the second notification message, and the transmission path of the second network traffic does not pass through the first device.
The method of claim 13 or 14, wherein the first notification message includes identification information of a link with the first device as an endpoint and a cost value of the link, and the cost The value corresponds to the first energy type.
The method of claim 15, wherein the first notification message is an interior gateway protocol IGP message, and the first notification message includes a link status type length value TLV or a node status TLV, and the The cost value is carried in the link status TLV or the node status TLV.
The method of claim 15, wherein the first notification message is an interior gateway protocol IGP message, the first notification message includes an energy saving factor TLV, and the energy saving factor TLV is an extended TLV, The energy saving factor TLV includes the cost value.
The method according to any one of claims 13-17, characterized in that the first device and the second device are Devices in the same autonomous system AS domain.
The method according to claim 13 or 14, characterized in that the first notification message is a Border Gateway Protocol BGP message, the first notification message is used to carry device attributes, and the first notification message A new router attribute field is included, and the new router attribute field includes the first energy type.
The method according to claim 13 or 14, characterized in that the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, the first notification message includes a color field, and the color field includes the first energy type.
The method of claim 13 or 14, wherein the first advertisement message is a BGP message, the first advertisement message includes a path attribute field, and the path attribute field includes first routing information, The first routing information includes the first energy type, and the first routing information is routing information saved on the first device.
The method of claim 13 or 14, wherein the first advertisement message is a BGP message, and the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the The first energy type, the first routing information is routing information saved on the first device.
The method according to claim 13 or 14, characterized in that the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the autonomy of the first advertisement message The system path AS-Path field includes m identical autonomous system AS numbers, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the first device The AS domain in which it is located.
The method of claim 13, 14, 19, 20, 21, 22 or 23, wherein the first device and the second device are devices in two different AS domains.
The method according to any one of claims 13 to 18, characterized in that the second device is a network device with a message forwarding function in the communication network, and the second device includes third routing information, The next-hop device indicated by the third routing information is not the first device or the next-hop device does not include routing information that can reach the first device. The destination device indicated by the third routing information is not the same as the first device. The destination device of the first network traffic is the same;

The second device determines the first transmission path of the first network traffic based on the first notification message, including:

The second device replaces the next hop device indicated by the third routing information with a third device based on the first advertisement message, and the third device is the first device or the third device includes Routing information capable of reaching the first device.
The method of claim 14, wherein the second device is a network device with a message forwarding function in the communication network, the second device includes fourth routing information, and the fourth routing information The next hop device indicated by the information is the first device or the next hop device includes routing information that can reach the first device, the destination device indicated by the fourth routing information and the second network traffic. The destination device is the same;

The second device determines the transmission path of the second network traffic based on the second notification message, including:

The second device replaces the next hop device indicated by the fourth routing information with a fourth device based on the second advertisement message, and the fourth device is not the first device or the fourth device does not Includes routing information that can reach the first device.
The method of claim 13, 14, 19, 20, 21, 22, 23 or 24, wherein the second device is a controller or the second device is a transmitter of the first network traffic The head node of the path.
A communication device, characterized in that the device is applied to a network system including the device and a second device, and the device includes:

A processing module configured to determine a first energy type of the energy supplied by the device, the device being a network device with a message forwarding function in a communication network, and the first energy type being renewable energy;

A communication module, configured to send a first notification message, where the first notification message indicates the first energy type.
The device according to claim 28, characterized in that the communication module is also used for:

When the energy type of the energy supplied by the device changes from the first energy type to a second energy type, a second notification message is sent, and the second energy type is a non-renewable energy source. The second notification message Indicates the second energy type.
The device according to claim 28 or 29, characterized in that the first notification message includes identification information of a link with the device as an endpoint and a cost value of the link, and the cost value is the same as the cost value of the link. Corresponds to the first energy type.
The device of claim 30, wherein the first notification message is an interior gateway protocol IGP message, and the first notification message includes a link status type length value TLV or a node status TLV, and the The cost value is carried in the link status TLV or the node status TLV.
The device of claim 30, wherein the first notification message is an IGP message, the first notification message includes an energy saving factor TLV, and the energy saving factor TLV is an extended TLV. The factor TLV includes the cost value.
The device according to any one of claims 28 to 32, characterized in that the device and the second device are devices in the same autonomous system (AS) domain.
The device according to claim 28 or 29, characterized in that the first notification message is a Border Gateway Protocol BGP message, the first notification message is used to carry device attributes, and the first notification message A new router attribute field is included, and the new router attribute field includes the first energy type.
The device according to claim 28 or 29, characterized in that the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, the first notification message includes a color field, and the color field includes the first energy type.
The device according to claim 28 or 29, wherein the first advertisement message is a BGP message, the first advertisement message includes a path attribute field, and the path attribute field includes first routing information, The first routing information includes the first energy type, and the first routing information is routing information saved on the device.
The device according to claim 28 or 29, wherein the first advertisement message is a BGP message, and the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the The first energy type, the first routing information is routing information saved on the device.
The device according to claim 28 or 29, characterized in that the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the autonomy of the first advertisement message The system path AS-Path field includes m identical AS numbers, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the AS domain where the device is located. .
The device according to claim 28, 29, 34, 35, 36, 37 or 38, characterized in that the device and the second device are devices in two different AS domains.
A communication device, characterized in that the device is applied to a network system including a first device and the device, and the device includes:

A communication module configured to receive a first notification message, the first notification message indicating that the energy type of the power supply energy of the first device is a first energy type, the first energy type is renewable energy, and the third energy type is renewable energy. One device is a network device with a message forwarding function in the communication network;

A processing module configured to determine a transmission path of the first network traffic based on the first notification message, where the transmission path of the first network traffic passes through the first device.
The device of claim 40, wherein the communication module is further configured to receive a second notification message indicating that the energy type of the power supply energy of the first device is a second energy source. Type, the second energy type is non-renewable energy;

The processing module is further configured to determine a transmission path of the second network traffic based on the second notification message, and the transmission path of the second network traffic does not pass through the first device.
The apparatus according to claim 40 or 41, wherein the first notification message includes identification information of a link with the first device as an endpoint and a cost value of the link, and the cost The value corresponds to the first energy type.
The device of claim 42, wherein the first notification message is an interior gateway protocol IGP message, and the first notification message includes a link status type length value TLV or a node status TLV, and the The cost value is carried in the link status TLV or the node status TLV.
The device of claim 42, wherein the first notification message is an interior gateway protocol IGP message, the first notification message includes an energy saving factor TLV, and the energy saving factor TLV is an extended TLV, The energy saving factor TLV includes the cost value.
The device according to any one of claims 40 to 44, wherein the first device and the device are devices in the same autonomous system (AS) domain.
The device according to claim 40 or 41, characterized in that the first notification message is a Border Gateway Protocol BGP message, the first notification message is used to carry device attributes, and the first notification message A new router attribute field is included, and the new router attribute field includes the first energy type.
The device according to claim 40 or 41, characterized in that the first advertisement message is a Border Gateway Protocol BGP message, and the first advertisement message is used to carry the Segment Routing Interconnection Protocol version 6 policy SRv6 Policy, the first notification message includes a color field, and the color field includes the first energy type.
The device of claim 40 or 41, wherein the first advertisement message is a BGP message, the first advertisement message includes a path attribute field, and the path attribute field includes first routing information, The first routing information includes the first energy type, and the first routing information is routing information saved on the first device.
The device according to claim 40 or 41, wherein the first advertisement message is a BGP message, and the community attribute of the first advertisement message indicates that the energy type corresponding to the first routing information is the The first energy type, the first routing information is routing information saved on the first device.
The device according to claim 40 or 41, characterized in that the first advertisement message is a BGP message, the first advertisement message is used to announce routes to neighbors, and the autonomy of the first advertisement message The system path AS-Path field includes m identical autonomous system AS numbers, m is a multiple value corresponding to the first energy type, m is an integer greater than 0, and the AS number is used to identify the first device The AS domain in which it is located.
The device according to claim 40, 41, 46, 47, 48, 49 or 50, characterized in that the first device and the device are devices in two different AS domains.
The device according to any one of claims 40 to 45, characterized in that the device is a network device with a message forwarding function in the communication network, the device includes third routing information, and the third The next-hop device indicated by the routing information is not the first device or the next-hop device does not include routing information that can reach the first device. The destination device indicated by the third routing information and the first network The destination device of the traffic is the same;

The processing module is configured to replace the next hop device indicated by the third routing information with a third device based on the first advertisement message, and the third device is the first device or the third device. The device includes routing information capable of reaching the first device.
The device of claim 41, wherein the device is a network device with a message forwarding function in the communication network, the device includes fourth routing information, and the fourth routing information indicates the next A one-hop device is the first device or the next-hop device includes routing information that can reach the first device, and the destination device indicated by the fourth routing information is the same as the destination device of the second network traffic;

The processing module is configured to replace the next hop device indicated by the fourth routing information with a fourth device based on the second advertisement message. The fourth device is not the first device or the fourth device. The device does not include routing information that can reach the first device.
The device according to claim 40, 46, 47, 48, 49, 50 or 51, characterized in that the device is a controller or the device is a head node of the transmission path of the first network traffic.
A communication system, characterized in that the system includes the device according to any one of claims 28-39 and the device according to any one of claims 40-54.
A communication device, characterized in that it includes a memory, a processor and a computer program stored on the memory. When the processor executes the computer program, the device implements any one of claims 1-27 the method described.