WO2024012316A1

WO2024012316A1 - Packet processing method and device, network node and storage medium

Info

Publication number: WO2024012316A1
Application number: PCT/CN2023/105755
Authority: WO
Inventors: 刘雅思; 程伟强; 姜文颖
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2022-07-11
Filing date: 2023-07-04
Publication date: 2024-01-18
Also published as: CN117424940A

Abstract

Disclosed in the present application are a packet processing method and device, a network node and a storage medium. The method comprises: a network node acquiring a first packet, wherein a segment identifier (SID) of the first packet is associated with a network resource partition (NRP); and forwarding the first packet according to the SID of the first packet.

Description

Message processing method, device, network node and storage medium

Cross-references to related applications

This application is filed based on a Chinese patent application with application number 202210813599.5 and a filing date of July 11, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application.

Technical field

The present application relates to the field of transmission and bearer networks, and in particular to a message processing method, device, network node and storage medium.

Background technique

With the continuous development of fifth-generation mobile communication technology (5G) and computing power networks, while providing highly reliable and highly scalable Internet Protocol (IP) network services, the demand for differentiated network services is also increasing. Carrier networks need to reserve a set of network resources for a specific customer or specific service while specifying an explicit path to achieve resource isolation from other customers and services in the same network. However, there is currently no effective solution for how to identify allocated dedicated network resources during packet forwarding.

Contents of the invention

In order to solve related technical problems, embodiments of the present application provide a message processing method, device, network node and storage medium.

The technical solution of the embodiment of this application is implemented as follows:

The embodiment of this application provides a message processing method, which is applied to network nodes, including:

Obtain the first message; wherein the segment identifier (SID, Segment IDentifier) of the first message is associated with the network resource fragment (NRP, Network Resource Partition);

The first message is forwarded according to the SID of the first message.

In the above solution, forwarding the first message according to the SID of the first message includes:

Forward the first message according to the outbound interface associated with the SID of the first message and the NRP.

In the above solution, forwarding the first message based on the outbound interface and NRP associated with the SID of the first message includes:

Determine the NRP corresponding to the SID of the first message according to the first information;

In the above solution, the first information is preconfigured or issued by the control device.

In the above solution, the network node includes a first network node, and the method further includes:

Second information is obtained, the second information includes the SID of the first message of at least one second network node; the second information is used to encapsulate the first message.

In the above solution, the second information obtained includes:

Receive the second information sent by the control device;

or,

Receive third information sent by the at least one second network node, where the third information includes the SID of the first message of the at least one second network node; use the received third information to determine the second information .

An embodiment of the present application also provides a message processing device, including:

The acquisition unit is configured to acquire the first message; wherein the SID of the first message is associated with the NRP;

A processing unit configured to forward the first message according to the SID of the first message.

An embodiment of the present application also provides a network node, including: a processor and a communication interface; wherein,

The processor is configured as:

Obtain the first message; wherein the SID of the first message is associated with the NRP;

The first message is forwarded through the communication interface according to the SID of the first message.

An embodiment of the present application also provides a network node, including: a processor and a memory configured to store a computer program capable of running on the processor,

Wherein, the processor is configured to execute the steps of any of the above methods when running the computer program.

An embodiment of the present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the above methods are implemented.

According to the message processing method, device, network node and storage medium provided by the embodiment of the present application, the network node obtains the first message; wherein the SID of the first message is associated with the NRP; according to the SID of the first message Forward the first message. The solution provided by the embodiment of this application defines a new type of endpoint behavior and associates the corresponding SID with the NRP to identify the NRP that the SRv6 message can operate on the network node, thereby realizing the network node's reservation of network resources. usage of.

Description of drawings

Figure 1 is a schematic flow chart of the message processing method according to the embodiment of the present application;

Figure 2 is a schematic diagram of a SID format according to an embodiment of the present application;

Figure 3 is a schematic diagram of the physical networking architecture of this application application example;

Figure 4 is a schematic diagram of the End.NRP SID and corresponding NRP of the application example of this application;

Figure 5 is a schematic diagram of the processing and message forwarding flow of a network node in an application example of this application;

Figure 6 Application example End.NRP SID and NRP-ID schematic diagram of this application;

Figure 7 is a schematic diagram of the processing and message forwarding process of another network node in the application example of this application;

Figure 8 is a schematic structural diagram of a message processing device according to an embodiment of the present application;

Figure 9 is a schematic diagram of a network node structure according to an embodiment of the present application.

Detailed ways

The present application will be described in further detail below in conjunction with examples.

Among related technologies, SRv6 uses the existing Internet Protocol version 6 (IPv6) forwarding technology and combines it with segment routing (SR, Segment Routing) to achieve network programmability through flexible IPv6 extension headers and simplify network protocols. type, has good scalability and programmability, can meet the diverse needs of more new services, provides high reliability, and has good application prospects in cloud network services.

The SID of standard SRv6 has the routable attribute, which can simplify the creation of inter-domain paths and realize the ability to simplify the establishment of end-to-end paths in IPv6 networks. At the same time, SRv6 SID supports programmability, which can meet the needs of flexible network and business function processing. Combined with the collaborative support of centralized and distributed control planes, it can flexibly meet the needs of various business and network functions and adapt to the needs of network and business development. . In SRv6 technology, there is a mechanism that enables explicit source routing without introducing every path state into the network.

In SRv6 technology, although the centralized controller can have a global network status view and can use different SR paths to provide different services, the packet forwarding process still relies on the traditional Differentiated Service Quality of Service (DiffServ QoS). ) mechanism to provide coarse-grained traffic differentiation in the network. This mechanism may be sufficient for some types of services, however, some clients or services may require a dedicated set of network resources to be allocated in the network to achieve resource isolation from other clients and services in the same network, and this The number of types of clients or services may be greater than the number of traffic classes available for DiffServ QoS. Among related technologies, SRv6 technology does not have the ability to reserve network resources and/or identify a set of network resources reserved for services or customers.

Based on this, in various embodiments of this application, a new SRv6 endpoint behavior (English can be expressed as SRv6 Endpoint Behavior) is defined. The SID of the new SRv6 endpoint behavior is associated with the NRP to identify the SRv6 message in a specific The NRP that a network node can operate enables the network node to identify reserved network resources (which can also be called dedicated network resources).

Among them, in the embodiment of this application, NRP refers to: a set of network resources allocated from the underlying (English can be expressed as underlay) network, used to carry a specific set of network traffic and meet the required specific service level goals ( SLO, Specific Service Level Objectives) and Service Level Expectations (SLE, Service Level Expectations) (English can be expressed as A Network Resource Partition (NRP) is a set of network resources that are allocated from the underlay network to carry a specific set of network traffic and meet the required SLOs and SLEs).

The NRP includes but is not limited to time division multiplexing (TDM, Time-Division Multiplexing) channels, network bandwidth, time slots, queues, tunnels, SRv6 policies (English can be expressed as Policy), computing resources and storage resources, etc.

The embodiment of the present application provides a message processing method, which is applied to network nodes. As shown in Figure 1, the method includes:

Step 101: Obtain the first message; wherein the SID of the first message is associated with the NRP;

Step 102: Forward the first message according to the SID of the first message.

Among them, in actual application, the network node may include a Slicing Packet Network (SPN, Slicing Packet Network), router, or data center switch and other equipment that supports SRv6 technology. The network node may also be called an endpoint or a node. This document The application embodiment does not limit this, as long as its functions are realized.

From the perspective of the forwarding path of the first message, the network node may be a first node (which may also be called a head node or a source node) or an intermediate forwarding node.

In step 101, in actual application, obtaining the first message may be understood as locally generating the first message, or may be understood as obtaining the first message from other nodes.

In actual application, the message can also be understood as a packet (which can be expressed as packet in English), or as traffic (which can be expressed as traffic in English). The embodiments of the present application do not limit this, as long as its function is realized.

The association of the SID of the first message with the NRP means that the SID of the first message is associated with the NRP assigned to the first message by the network node. For the first message, after the network node locally matches the SID, it can learn based on the matched SID that the action it takes is to use the NRP of the first message to forward the message. That is, the SID is only valid locally. Therefore, the SID of the first message refers to the SID of the network node.

In practical application, the association between SID and NRP can be understood as SID and NRP related (English can be expressed as associated), it can also be understood as SID and NRP corresponding (English can be expressed as related), or it can be understood as SID indication (English can be expressed as related). It can be expressed as indicated)NRP.

In this embodiment of the present application, a new type of SID is defined, and the SID of the first message is the SID of the newly defined type. For example, it can be defined as End.NRP SID. Illustratively, the SID in the embodiment of the present application may adopt the SID format shown in Figure 2. The SID format shown in Figure 2 consists of three parts: a locator (Locator), a function (Function), and a parameter segment (Arguments). Among them, in the format shown in Figure 2, the Locator field has a positioning function, so it is generally unique within the SR domain. In this way, other nodes in the network can locate this node through the Locator segment routing, and at the same time, the locator field published by this node All SRv6 SIDs can also be reached through this Locator network segment route; the Function field represents the instructions of the device, which are preset by the device. The Function field is used to instruct the SRv6 SID generation node to perform corresponding functional operations; the Arguments field is Optional field, which can be omitted. The Arguments field can be used to define some packet flows and services. service information. In other words, you can use the Function field to identify the End.NRP SID, you can use the Arguments field to identify the End.NRP SID, and you can also use Function+Arguments to identify the End.NRP SID.

Different types of SID define different execution actions. When the SID format shown in Figure 2 is used, the Function and/or Arguments fields can be used to distinguish the SID of the embodiment of the present application from other types of SID. It should be noted that for the SID in the embodiment of this application, the Function and/or Arguments fields do not have a clear numerical value (which can also be understood as a value) definition, that is, the Function and/or Arguments fields do not have specific numbers. That is to say, the Function and/or Arguments fields do not have specific numbers. The value of/or the Arguments field can be defined as needed. The embodiment of the present application does not limit the value of the Function and/or Arguments field. Among them, in actual application, when configuring values, it can be configured uniformly in the entire network, so the values of each node are consistent, or it does not need to be configured uniformly in the entire network, in which case the values of each node are inconsistent.

The new type of SID in the embodiment of this application can be understood as defining a new endpoint behavior (which can be expressed as behavior in English), and its name can be End.NRP. End.NRP can be understood as a variant (English can be expressed as variant) of the End.X behavior (English can be expressed as behavior) defined in related technologies. End.NRP is an SRv6 instance of the adjacent SID (Adj-SID), which is mainly used for traffic forwarding and NRP identification. Among them, End.NRP is associated with at least one set of Layer 2 (L2) or Layer 3 (L3) adjacencies, and is also associated with at least one set of NRPs.

Correspondingly, for a network node, at least one End.NRP SID that identifies the resource attribute can be assigned. The End.NRP SID is associated with the forwarding next hop of at least one L2 or L3 neighbor. If multiple next hops are associated, it can The next hop is selected through the hash (English can be expressed as hash) algorithm. At the same time, the End.NRP SID is associated with the local NRP on each node, and the NRP is used to forward messages with the End.NRP SID.

From a link perspective, multiple End.NRP SIDs can be assigned to identify different adjacent forwarding next hops and resource sets. A set of End.NRP SIDs can be used to build a SID list (which can be expressed as list in English), which is used to guide traffic forwarding along an explicit path and processed using NRP at each instantiated node.

In actual application, the SID of the network node may be assigned by the network node or may be assigned by the control device, which is not limited in the embodiments of the present application. The SID in the embodiment of this application can be configured statically (i.e., pre-configured), or based on network telemetry (telemetry in English), Border Gateway Protocol-Link State (BGP-LS), or netconf The protocol synchronizes information such as the SID and the corresponding endpoint behavior type to the control device, so that the control device can learn what type of behavior the SID in the embodiment of this application is, that is, it knows that the SID in the embodiment of this application has traffic forwarding and The SID associated with NRP; the network node can synchronize the SID and corresponding endpoint behavior type and other information to other network elements, that is, other network nodes, through static configuration or based on protocols such as Interior Gateway Protocol (IGP, Interior Gateway Protocol).

Of course, the SID in the embodiment of the present application can also adopt other formats. In the embodiment of the present application, the SID Not limited.

The forwarding operation in step 102 can be understood as not modifying the payload of the message (which can be expressed as payload in English), but only modifying the message header required for forwarding, and then forwarding the message.

In the embodiment of this application, during packet forwarding, each End.NRP SID is associated with the outbound interface and NRP. In other words, the End.NRP SID can be used to obtain the outbound interface of the network node and the NRP used for packet forwarding on the outbound interface. Specifically, each forwarding node (also called a transit node) can use the End.NRP SID to determine the outbound interface of the message and the related local NRP, and then use the local NRP to forward the message to the next hop node.

Based on this, in one embodiment, the specific implementation of step 102 may include:

Wherein, in actual application, the network node may locally store at least one outgoing interface of the indication message and the SID of the related local NRP, and the network node may determine the first report based on the corresponding relationship between the SID and the NRP information. The NRP corresponding to the SID of the document.

Based on this, in one embodiment, the network node determines the NRP corresponding to the SID of the first message according to the first information; wherein the first information includes the corresponding relationship between the SID and the NPR information, that is, the third One message includes SID and corresponding NPR information.

Here, in actual application, the first information may be pre-configured at the network node, or may be delivered by the control device. The first information may be presented in a table, which is not limited in the embodiments of this application.

Wherein, the control device (such as a Software Defined Network (SDN, Software Defined Network) controller, a network management system (which may also be called a network management)) may also be called a management and control device, a management device, or a management and control system. The embodiments of this application are There is no limit to this, as long as its function is realized.

In actual application, the functions of the control device may include configuration delivery, information monitoring, path planning, etc. Wherein, in SDN, the control device includes an SDN controller, and in non-SDN, the control device includes a network management system.

For the first message, after receiving the message, the first node needs to encapsulate routing information in the message header to guide the first message through the network, that is, to forward the first message.

Based on this, in an embodiment, when the network node includes a first network node, the method may further include:

That is to say, the first network node uses the second information to encapsulate the first message.

The second information includes the SID corresponding to the path. In actual application, the second information may be presented in the form of a table, which is not limited in the embodiments of the present application.

In actual application, the first network node is the head node, and the first network node is a network edge node, which can be called a PE node, PE router, PE device, etc., such as an operator edge node in a backbone network; correspondingly , the second network node is a network forwarding node, which may be called a P node, P router, P device, etc., such as an operator node in a backbone network.

In an embodiment, the first network node may obtain the second information through static configuration.

In an embodiment, the first network node may receive the second information delivered by the control device, thereby obtaining the second information.

In an embodiment, the first network node may also generate the second information by itself; specifically, the first network node receives the third information sent by the at least one second network node, and the third The information includes the SID of the first message of at least one second network node; the second information is determined using the received third information.

Here, in actual application, the first network node and the second network node may process messages of multiple customers or services. In this scenario, the second network node sends messages of different customers or services. SID, the business characteristics of different customers or services can be sent at the same time, so that the first network node can distinguish the SIDs of the messages of different customers or services of the second network node. Of course, the first network node can also use other The SIDs of the packets of different clients or services of the second network node are distinguished by a method, which is not limited in the embodiment of the present application.

As can be seen from the above description, the association between the SID of the second network node and the NRP needs to be passed to the first network node, so that the first network node can subsequently encapsulate the message. The association between the SID and the NRP of the second network node can be transferred to the first network node through static configuration, or by the control device, or by the second network node sending it to the first network node.

As can be seen from the above description, in the embodiment of the present application, a new type of SID is defined, and the newly defined SID is used to associate with the NRP. In actual application, when applying the solutions of the embodiments of this application, multiple SIDs used to identify NRP can be allocated on a specific network segment. From the perspective of the entire specific network segment, each SID represents the number allocated in the network. A subset of network resources to meet the needs of a single or a group of customers or services. The NRP allocation on the network segment can be completed through local configuration of the network node or through the control device, which is not limited in the embodiment of the present application.

In the method provided by the embodiment of the present application, a network node obtains a first message; wherein the SID of the first message is associated with the NRP; and forwards the first message according to the SID of the first message. The solution provided by the embodiment of this application defines a new type of endpoint behavior and associates the corresponding SID with the NRP to identify the NRP that the SRv6 message can operate on the network node, thereby realizing the network node's reservation of network resources. usage of.

The present application will be described in further detail below in conjunction with application examples.

In this application example, the behaviors of End.NRP SID are associated with two sets, namely J1 and J2. Among them, J1 contains one or more L2 interfaces, or one or more L3 interfaces; J2 contains one or more Collection of network resources. For a network node, through the outbound interface corresponding to J1 Upload the NRP corresponding to J2 and forward the packet to the new destination (English can be expressed as: forward the packet via the NRP of the outbound interface associated with the End.NRP SID).

The control device globally plans network resources according to the user business characteristics of the user business or service, and allocates the corresponding NRP for the user business or service; allocates the corresponding End.NRP SID to the corresponding NRP on the forwarding device, thereby realizing the End.NRP SID and the actual NRP association. Among them, the method of allocating End.NRP SID on the forwarding device can be control device allocation or static configuration.

Figure 3 is a schematic diagram of the physical networking architecture of the application embodiment. Assume that the locator planning of each network node is as follows:

PE1:A:1::

P1:A:2::

P2:A:3::

PE2:A:4::.

Application example one

In this application example, the VPN service and G.MTN resources are used as examples to describe the End.NRP SID operating mechanism.

It is assumed that the service resource requirements proposed by customers of three virtual private networks (VPNs) in the network are as shown in Table 1.

Table 1

According to the service resource requirements of the three VPN customers, NRP is allocated. In this application example, NRP is the G.MTN sub-interface resource. Calculate the corresponding SRv6 Policy paths for the three VPN customers in the network, and implement the End.NRP SID and The association of G.MTN resources results in the End.NRP SID and corresponding NRP diagram shown in Figure 4.

For PE1, divide the network resources of the physical interface GE1/0/0 to form a correspondence table between End.NRP SID and G.MTN resources, as shown in Table 2.

Table 2

For P1, divide the network resources of physical interface GE2/0/0 to form a correspondence table between End.NRP SID and G.MTN resources, as shown in Table 3.

table 3

For P2, divide the network resources of physical interface GE3/0/0 to form a correspondence table between End.NRP SID and G.MTN resources, as shown in Table 4.

Table 4

Among them, when performing SRv6 Policy path calculation, End.NRP SID needs to be used for orchestration so that packets can be forwarded through the specific NRP associated with each End.NRP SID.

The SRv6 Policy path information (also called segment list) of the three VPN customers is organized as follows:

Segment list of VPN1 customer's SRv6 Policy: <A:1::11,A:2::11,A:3::11,A:4::100>;

Segment list of VPN2 customer’s SRv6 Policy: <A:1::22,A:2::22,A:3::22,A:4::200>;

Segment list of VPN3 customer's SRv6 Policy: <A:1::33,A:2::33,A:3::33,A:4::300>.

Among them, A:4::100, A:4::200, and A:4::300 are the VPN SIDs assigned by the PE2 node to VPN1, VPN2, and VPN3 respectively.

What needs to be explained is: A:1::11, A:2::11, A:3::11, A:1::22, A:2::22, A:3::22, A:1 ::33, A:2::33, and A:3::33 are all End.NRP SIDs. As mentioned above, this application example does not Limit the value of the Function/or Arguments field, that is, 11, 22, and 33 are just examples. The value of the Function and/or Arguments field can be any value, as long as the SID can be identified and corresponding operations are required (use the reservation on the outbound interface) NRP forwards packets).

The following uses VPN1 as an example to describe the processing of network nodes and the packet forwarding process in conjunction with Figure 5. The process includes the following steps:

Step 1: PE1 directs the traffic of CE1 to the SRv6 Policy tunnel of the VPN1 customer based on the service characteristics of VPN1;

Specifically, PE1 encapsulates the packet according to the SRv6 Policy of VPN1, and the packet header of the encapsulated packet includes the IPv6 packet header and the segment routing header (SRH).

Step 2: PE1 searches for the corresponding entry (such as the entry shown in Table 2) based on the current instructions of A:1::11, and obtains the identified NRP as the G.MTN1 sub-interface of the GE1/0/0 physical interface. Forward the packet through the sub-interface;

Step 3: After receiving the message, P1 modifies the destination address in the message to A:3::11, and searches for the corresponding table entry (such as the table shown in Table 3) based on the current instructions of A:2::11. item), obtain the identified NRP as the G.MTN1 sub-interface of the GE2/0/0 physical interface, and forward the packet through the sub-interface;

Step 4: After receiving the message, P2 modifies the destination address in the message to A:4::100, and searches for the corresponding table entry (such as the table shown in Table 4) according to the current instructions of A:3::11. item), obtain the identified NRP as the G.MTN1 sub-interface of the GE3/0/0 physical interface, and forward the packet through the sub-interface;

Step 5: PE2 decapsulates the packet according to the instructions of A:4::100 and forwards it to CE11.

Application example two

In this application example, the concept of NRP identification (such as NRP-ID) is introduced to identify an NRP to shield or abstract the NRP.

The following uses VPN services, NRP-ID and QoS queue resources as examples to describe the operating mechanism of End.NRP SID.

It is assumed that the service resource requirements proposed by three VPN customers in the network are as shown in Table 5.

table 5

According to the business resource requirements of the three VPN customers, NRP is allocated. In this application example, NRP is the QoS queue resource. Calculate the corresponding SRv6 Policy paths for the three VPN customers in the network, and based on the service bandwidth requirements on each network node along the path, combined with the node outbound access The QoS queue resource on the interface realizes the association between NRP-ID and End.NRP SID and the QoS queue of the corresponding bandwidth, and the association between End.NRP SID and NRP-ID. The End.NRP SID and NRP-ID are obtained as shown in Figure 6. ID diagram.

For PE1, divide the network resources of the physical interface GE1/0/0 to form the corresponding relationship between End.NRP SID, NRP-ID and QoS queue resources, as shown in Table 6.

Table 7

For PE1, divide the network resources of physical interface GE2/0/0 to form the corresponding relationship between End.NRP SID, NRP-ID and QoS queue resources, as shown in Table 8.

Table 8

For PE2, divide the network resources of physical interface GE3/0/0 to form the corresponding relationship between End.NRP SID, NRP-ID and QoS queue resources, as shown in Table 9.

Table 9

Among them, when performing SRv6 Policy path calculation, End.NRP SID needs to be used for orchestration so that packets can be forwarded through the specific NRP identified by each End.NRP SID.

The SRv6 Policy path information (also called Segment list) of the three VPN customers is arranged as follows:

What needs to be explained is: A:1::11, A:2::11, A:3::11, A:1::22, A:2::22, A:3::22, A:1 ::33, A:2::33, and A:3::33 are all End.NRP SIDs. As mentioned before, this application example does not limit the value of the Function/or Arguments field, that is, 11, 22, and 33 only is an example. The value of the Function and/or Arguments field can be any value, as long as the SID can be identified and corresponding operations are required (using the reserved NRP on the outgoing interface to forward packets).

The following uses VPN1 as an example to describe the processing of network nodes and the packet forwarding process in conjunction with Figure 7. The process includes the following steps:

Specifically, PE1 encapsulates the packet according to the SRv6 Policy of VPN1, and the packet header of the encapsulated packet includes the IPv6 packet header and SRH.

Step 2: PE1 searches for the corresponding entry (such as the entry shown in Table 7) according to the current instruction of A:1::11, and obtains the identified NPR as the physical GE1/0/0 identified by NRP-ID 100. The QoS queue of the 1G BW of the interface forwards the packet through the QoS queue;

Step 3: After receiving the message, P1 modifies the destination address in the message to A:3::11, and searches for the corresponding table entry (such as the table shown in Table 8) based on the current instructions of A:2::11. item), obtain the QoS queue of the 1G BW of the GE2/0/0 physical interface identified by the NRP identified by NRP-ID 100, and forward the packet through the QoS queue;

Step 4: After receiving the message, P2 modifies the destination address in the message to A:4::100, and searches for the corresponding table entry (such as the table shown in Table 9) according to the current instructions of A:3::11. item), obtain the QoS queue of the 1G BW of the GE3/0/0 physical interface identified by the NRP identified by NRP-ID 100, and forward the packet through the QoS queue;

In this application application example, the End.NRP SID is valid locally, and the End.NRP SID is globally visible or only visible locally to the control device, head node, and network node.

As can be seen from the above description, End.NRP adds resource information (that is, NRP information) as a judgment factor for packet forwarding. Network nodes match the corresponding network resources according to the End.NRP SID for forwarding. On a specific network segment, multiple End.NRP SIDs that identify NRP can be allocated, and each End.NRP SID represents a subset of network resources allocated in the network. Each set of NRPs can be associated with at least one End.NRP SID. The End.NRP SID that identifies the resource attribute can be used to construct a path with a set of reserved network resources that can be used to carry service traffic that requires dedicated network resources along the path.

The solutions provided by the embodiments of this application can be widely used in various networks applied to SRv6 networks (such as IP bearer networks, SPNs, intra-cloud networks, etc.).

Adopting the solutions provided by the embodiments of this application has the following advantages:

(1) Compatible

The solution of the embodiment of this application is compatible with the IPv6 basic protocol. If the forwarding device does not support the End.NRP function, then it can be forwarded according to the existing IPv6 forwarding mechanism, and there is no compatibility problem. If the forwarding device supports the End.NRP function, it can obtain the corresponding network resources by parsing the SID and forward the packet.

(2) Strong implementability

The solution provided by the embodiment of this application can achieve deterministic network resource forwarding as long as the path and End.NRP SID are reasonably planned, and can meet the future carrying needs of thousands of industries and meet large-scale deterministic and differentiated services.

3) Little impact on performance

With the solution provided by the embodiments of this application, the forwarding device only needs to parse the semantics of the End.NRP SID in the IPv6 message header. The processing efficiency is high, the performance impact is small, and it does not introduce new difficulties to the forwarding chip.

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a message processing device, which is installed on the network node. As shown in Figure 8, the device includes:

The obtaining unit 801 is configured to obtain the first message; wherein the SID of the first message is associated with the NRP;

The processing unit 802 is configured to forward the first message according to the SID of the first message.

In one embodiment, the processing unit 802 is configured to forward the first message according to the outbound interface and NRP associated with the SID of the first message.

In an embodiment, the processing unit 802 is configured to determine the NRP corresponding to the SID of the first message according to the first information.

In one embodiment, the network node includes a first network node, and the processing unit 802 is further configured to obtain second information, where the second information includes the first message of at least one second network node. SID; the second information is used to encapsulate the first message.

In one embodiment, the processing unit 802 is configured as:

Receive the second information sent by the control device;

or,

In actual application, the acquisition unit 801 and the processing unit 802 may be implemented by a processor in a message processing device combined with a communication interface.

It should be noted that when the message processing device provided in the above embodiment performs message processing, Only the division of the above program modules is used as an example. In practical applications, the above processing allocation can be completed by different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all of the above descriptions or Partial processing. In addition, the message processing apparatus provided by the above embodiments and the message processing method embodiments belong to the same concept. Please refer to the method embodiments for the specific implementation process, which will not be described again here.

Based on the hardware implementation of the above program module, and in order to implement the method on the network node side of the embodiment of the present application, the embodiment of the present application also provides a network node. As shown in Figure 9, the network node 900 includes:

Communication interface 901 is capable of information interaction with other network nodes and control devices;

The processor 902 is connected to the communication interface 901 to implement information interaction with other network nodes and control devices, and is configured to execute the method provided by one or more technical solutions on the network node side when running a computer program;

Memory 903 on which the computer program is stored.

Specifically, the processor 902 is configured as:

The first message is forwarded through the communication interface 901 according to the SID of the first message.

In one embodiment, the processor 902 is configured to forward the first message according to the outbound interface and NRP associated with the SID of the first message.

In an embodiment, the processor 902 is configured to determine the NRP corresponding to the SID of the first message according to the first information.

In one embodiment, the network node 900 includes a first network node, and the processor 902 is further configured to obtain second information, where the second information includes the first report of at least one second network node. The SID of the message; the second information is used to encapsulate the first message.

In one embodiment, the processor 902 is configured as:

Receive the second information sent by the control device through the communication interface 901;

or,

The third information sent by the at least one second network node is received through the communication interface 901, and the third information includes the SID of the first message of the at least one second network node; using the received third information, Determine the second information.

It should be noted that the specific processing procedures of the processor 902 and the communication interface 901 can be understood with reference to the above method.

Of course, in actual application, various components in the network node 900 are coupled together through the bus system 904 . It will be appreciated that bus system 904 is configured to enable connection communications between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, various buses are labeled as bus system 904 in FIG. 9 .

The memory 903 in the embodiment of the present application is configured to store various types of data to support the operation of the network node 900 . Examples of such data include: any data used to operate on network node 900 any computer program.

It can be understood that the memory 903 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory). Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory, Magnetic Surface Memory , optical disk, or compact disc (CD-ROM, Compact Disc Read-Only Memory); magnetic surface memory can be disk storage or tape storage. Volatile memory can be random access memory (RAM, Random Access Memory), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Type Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory) ). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

The methods disclosed in the above embodiments of the present application can be applied to the processor 902 or implemented by the processor 902 . The processor 902 may be an integrated circuit chip with signal processing capabilities. During the implementation process, each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 902 . The above-mentioned processor 902 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 902 can implement or execute the various methods, steps and logical block diagrams disclosed in the embodiments of this application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 903. The processor 902 reads the information in the memory 903 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the network node 900 may be configured by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable logic devices (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components for executing the aforementioned method.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, such as a memory 903 that stores a computer program. The computer program can be processed by the network node 900 The processor 902 is executed to complete the steps described in the foregoing network node side method. The computer-readable storage medium can be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM and other memories.

It should be noted that "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

In addition, the technical solutions described in the embodiments of this application can be combined arbitrarily as long as there is no conflict.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the protection scope of the present application.

Claims

A message processing method, applied to network nodes, including:

Obtain the first message; wherein the segment identifier SID of the first message is associated with the network resource fragmentation NRP;

The first message is forwarded according to the SID of the first message.
The method according to claim 1, wherein forwarding the first message according to the SID of the first message includes:

Forward the first message according to the outbound interface associated with the SID of the first message and the NRP.
The method according to claim 2, wherein forwarding the first message based on the outbound interface and NRP associated with the SID of the first message includes:

Determine the NRP corresponding to the SID of the first message according to the first information;

Forward the first message according to the outbound interface associated with the SID of the first message and the NRP.
The method according to claim 3, wherein the first information is preconfigured or issued by a control device.
The method according to any one of claims 1 to 4, wherein the network node includes a first network node, and the method further includes:

Second information is obtained, the second information includes the SID of the first message of at least one second network node; the second information is used to encapsulate the first message.
The method according to claim 5, wherein said obtaining the second information includes:

Receive the second information sent by the control device;

or,

Receive third information sent by the at least one second network node, where the third information includes the SID of the first message of the at least one second network node; use the received third information to determine the second information .
A message processing device, including:

The acquisition unit is configured to acquire the first message; wherein the SID of the first message is associated with the NRP;

A processing unit configured to forward the first message according to the SID of the first message.
A network node includes: a processor and a communication interface; wherein,

The processor is configured as:

Obtain the first message; wherein the SID of the first message is associated with the NRP;

The first message is forwarded through the communication interface according to the SID of the first message.
A network node including: a processor and memory configured to store a computer program capable of running on the processor,

Wherein, the processor is configured to perform the steps of the method according to any one of claims 1 to 6 when running the computer program.
A storage medium on which a computer program is stored, which implements the steps of the method of any one of claims 1 to 6 when executed by a processor.