WO2019242715A1

WO2019242715A1 - Virtual cloud network control method and system, and network device

Info

Publication number: WO2019242715A1
Application number: PCT/CN2019/092194
Authority: WO
Inventors: 陈亮; 曾东方; 苗辉
Original assignee: 贵州白山云科技股份有限公司
Priority date: 2018-06-22
Filing date: 2019-06-21
Publication date: 2019-12-26
Also published as: CN110636000A; CN110636000B

Abstract

The present invention relates to but is not limited to the field of cloud computing. Disclosed are a virtual cloud network control method and system, and a network device, for use in solving the problems that costs of WAN network deployment are high, a deployment cycle is long, a service does not perceive, and the operation and maintenance is low. The method comprises: by collecting detection result information sent by each POP point, according to related information and connection quality information between the POP point and each possible next-hop target IP address comprised in the detection result information, selecting an optimal next-hop target IP address of each POP point; generating a routing table comprising optimal next-hop target IP address information; and updating the routing table to each POP point.

Description

Virtual cloud network control method, system and network device

This article claims the priority of the Chinese patent application filed on June 22, 2018 with the Chinese Patent Office, application number 201810653992.6, and the invention name is "a virtual cloud network control method, system and network device", the entire contents of which are incorporated by reference in the text.

Technical field

This article relates to, but is not limited to, the field of cloud computing, and in particular, to a virtual cloud network control method, system, and network device.

Background technique

Traditional enterprise networks often consist of three parts: data center, campus, and branch. They are interconnected through an enterprise WAN network. In order to ensure the quality of service, for a long time, the enterprise WAN network interconnection usually uses the operator's physical leased line or MPLS VPN leased line, but the price is expensive, the deployment cycle is long, the service is not perceived, and the operation and maintenance efficiency is low.

Summary of the Invention

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

This article provides a virtual cloud network control method, system and network device.

According to one aspect of this document, a method for controlling a virtual cloud network is provided, which includes:

The software-defined wide area network SD-WAN controller receives detection result information sent by each network service providing point POP point, and the detection result information includes connection quality information between the POP point and each possible next hop target IP address;

The SD-WAN controller selects the optimal next-hop target IP address of each POP point according to the detection result information and related information, and generates a routing table containing the optimal next-hop target IP address information. The routing table is updated to each POP point, and the related information includes any one or more of the following information:

Cost information, policy information, historical connection information, area information, POP point type information.

Before the step of the SD-WAN controller receiving the detection result information sent by each POP point, the method further includes:

The SD-WAN controller receives configuration information sent by a configuration center, and the configuration information carries at least one IP list;

The SD-WAN controller extracts the at least one IP list, and generates an initial routing table for each POP point according to the at least one IP list, and the initial routing table includes a next hop target available for each POP point. IP address

The SD-WAN controller sends a corresponding initial routing table to each POP point.

The detection result information includes any one or any number of the following information:

Detection machine name, detection target IP, round-trip delay between the POP point and the target IP address, and packet loss rate of the target IP address.

According to another aspect of this document, a method for controlling a virtual cloud network is provided, including:

The POP point performs network detection on all possible next-hop target IP addresses according to the initial routing table, and generates detection result information;

The POP point sends the detection result information to a software-defined wide area network SD-WAN controller for use by the SD-WAN controller to update a routing table.

Before the POP point performs network detection on all possible next-hop target IP addresses, and before the step of generating detection result information, the method further includes:

The POP point receives and stores the initial routing table sent by the SD-WAN controller, and the initial routing table carries all possible next hop target IP addresses of the POP point.

The method also includes:

The POP point receives the routing table sent by the SD-WAN controller, and updates the locally stored routing table to the routing table received from the SD-WAN controller closest to the current time.

The method also includes:

When the POP point receives the access request, it determines the next hop target IP address according to the routing table stored locally, and forwards the access request to the next hop target IP address.

According to another aspect of this document, a network device is provided, including:

An information collection module, configured to receive detection result information sent by each POP point, where the detection result information includes connection quality information between the POP point and each possible next hop target IP address;

A route optimization module is configured to select an optimal next hop target IP address of each POP point according to the detection result information and related information, and generate a routing table including the optimal next hop target IP address information, The routing table is updated to each POP point, and the related information includes any one or more of the following information:

The device further includes a configuration information receiving module;

The configuration information receiving module is configured to receive configuration information sent by a configuration center, and the configuration information carries at least one IP list;

The routing optimization module is further configured to extract the at least one IP list and generate an initial routing table for each POP point according to the at least one IP list, and the initial routing table includes a next available one for each POP point Jump destination IP address.

A network detection module, configured to perform network detection on all possible next-hop target IP addresses according to the initial routing table, and generate detection result information;

An information reporting module is configured to send the detection result information to a software-defined wide area network SD-WAN controller for use by the SD-WAN controller to update a routing table.

The device also includes:

A routing information management module is configured to receive the initial routing table sent by the SD-WAN controller, and the initial routing table carries all possible next hop target IP addresses of the POP point.

The routing information management module is further configured to receive a routing table sent by the SD-WAN controller, and update the locally stored routing table to the routing table received from the SD-WAN controller closest to the current time. .

The device also includes:

The forwarding platform is configured to determine a next-hop target IP address according to a locally stored routing table when the access request is received, and forward the access request to the next-hop target IP address.

According to another aspect of this document, a virtual cloud network control system is provided, including a software-defined wide area network SD-WAN controller and at least one POP point;

The POP point is configured to perform network detection on all possible next-hop target IP addresses according to the initial routing table, generate detection result information, and send the detection result information to a software-defined wide area network SD-WAN controller for use by all The SD-WAN controller is used to update the routing table.

The SD-WAN controller is configured to receive detection result information sent by each of the POP points, and according to connection quality information between the POP point and each possible next hop target IP address carried in the detection result information , Selecting the optimal next hop target IP address of each POP point, and generating a routing table containing the optimal next hop target IP address information, and updating the routing table to each POP point.

The SD-WAN controller is further configured to receive configuration information sent by a configuration center, carry at least one IP list in the configuration information, extract the at least one IP list, and generate each POP according to the at least one IP list The initial routing table of the point, which includes the next hop target IP address available to each POP point in the initial routing table, and sends the initial routing table to each POP point;

The POP point is further configured to receive and save the initial routing table sent by the SD-WAN controller.

According to another aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed, the steps of the virtual cloud network control method are implemented.

According to another aspect of the present invention, there is provided a computer device including a processor, a memory, and a computer program stored on the memory, and the processor implements the steps of the virtual cloud network control method described above when the processor executes the computer program.

This article collects the detection result information sent by each POP point, and selects the optimal next hop of each POP point according to the relevant information and the connection quality information between the POP point and each possible next hop target IP address contained in the detection result information. A target IP address, and generate a routing table containing the optimal next hop target IP address information, and update the routing table to each POP point. A dynamic optimal access path is constructed, which solves the problems of expensive deployment of WAN networks, long deployment cycles, and service insensitivity. Through the adaptive routing algorithm based on reinforcement learning, the intent-based network routing is better adapted to the complex and changing network environment, while making the management and operation and maintenance of the WAN easier.

Other characteristic features and advantages herein will become clear from reading the following description of the exemplary embodiments with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings that form a part of this document are used to provide a further understanding of this document. The exemplary embodiments and their descriptions are used to explain this document and do not constitute an improper limitation on this document. In the drawings:

Fig. 1 is a flow chart showing a method for controlling a virtual cloud network according to an exemplary embodiment.

Fig. 2 is a block diagram of an architecture of a virtual cloud network control system according to an exemplary embodiment.

Fig. 3 is a block diagram showing a device for controlling a virtual cloud network according to an exemplary embodiment.

Fig. 4 is a block diagram of a device for controlling a virtual cloud network according to an exemplary embodiment.

Fig. 5 is a block diagram of a device (general structure of a server) according to an exemplary embodiment.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of this document clearer, the technical solutions in the embodiments of this document will be clearly and completely described below in conjunction with the drawings in the embodiments of this document. Obviously, the described embodiments are this document. Some embodiments, but not all embodiments. Based on the embodiments herein, all other embodiments obtained by a person of ordinary skill in the art without creative labor shall fall within the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments herein and the features in the embodiments can be arbitrarily combined with each other.

In order to ensure the quality of service, for a long time, the enterprise WAN network interconnection usually uses the operator's physical leased line or MPLS VPN leased line, but the price is expensive, the deployment cycle is long, the service is not perceived, and the operation and maintenance efficiency is low.

This article provides a virtual cloud network control method. The process of using this method to complete the forwarding control is shown in Figure 1, including:

Step 101: The SD-WAN controller receives the configuration information sent by the configuration center.

Herein, the configuration information carries at least one IP list.

The configuration center is configured to receive related configuration information for a website that needs to be accelerated, convert the configuration information into text information with a specific format, and send the text information to the SD-WAN controller.

Specifically, the configuration information includes a domain name address of a website to be accelerated and at least one list containing POP point IPs, and the at least one IP list includes: a list formed by all POP point IPs capable of accelerating the domain name address, or Speed up multiple lists of different types of POP point IPs for this domain address.

Step 102: The SD-WAN controller extracts the at least one IP list, and generates an initial routing table of each POP point according to the at least one IP list.

The initial routing table includes a next hop target IP address available to each POP point. For example, the initial routing table delivered to POP point A contains all the next hop destination IP addresses available to the POP point A. That is, for a POP point node, the initial routing table it receives only needs to contain the next hop destination IP address of the POP point node, which reduces the amount of data to be sent to the initial routing table and avoids repeated delivery.

Step 103: The SD-WAN controller sends a corresponding initial routing table to each POP point.

Step 104: The POP point receives and saves the initial routing table sent by the SD-WAN controller, and performs network detection on all possible next hop target IP addresses according to the initial routing table to generate detection result information.

The detection result information includes connection quality information between the POP point and each possible next hop target IP address. Specifically, the detection result information includes at least any one or any of the following information:

Step 105: The POP point sends the detection result information to an SD-WAN controller for use by the SD-WAN controller to update a routing table.

Step 106: The SD-WAN controller selects an optimal next hop target IP address of each POP point according to the detection result information and related information, and generates a route including the optimal next hop target IP address information. Table to update the routing table to the respective POP points.

In this step, specifically, a decision algorithm is used to calculate a routing table according to the detection result and related information.

The relevant information includes at least one or more of the following information:

Step 107: The POP point receives the routing table sent by the SD-WAN controller, and updates the locally stored routing table to the routing table received from the SD-WAN controller closest to the current time.

Step 108: When receiving the access request, the POP point determines a next hop target IP address according to a routing table stored locally, and forwards the access request to the next hop target IP address.

This article also provides a virtual cloud network control method, using a POP point as the POP point and a control center as the SD-WAN controller as an example. The controller client and the forwarding plane are integrated on the POP point.

I. Configuration Center:

It is used to receive related configuration information for a website that needs to be accelerated, convert the configuration information into text information with a specific format, and send the text information to a control center.

The configuration information includes the domain name address of the website to be accelerated and at least one list containing POP point IPs, the at least one list includes: 1) a list formed by all POP point IPs capable of accelerating this domain name address; 2) with the POP point 2. Need to speed up the list formed by the middle-tier (single / multi-layer) node IP connected to the website source site.

Control Center:

The functions include: 1. forming a first routing table and sending each relationship table; 2. forming second to Nth routing tables and sending an updated relationship table.

1. Form a first routing table and send each relationship table:

The control center receives the text information in a specific format containing configuration information sent by the configuration center, parses the text information, extracts all IP lists in the text information, forms a first routing table (an initial routing table), and extracts the first routing table. A relationship table formed by each POP point and all the next-hop IPs associated with it is sent to each POP point in the IP list. As a result, all POPs can get all the possibilities of the next hop IP address when providing accelerated services. The first routing table includes 1) maintaining the connection relationship between the POP point and the middle-tier node; 2) maintaining the connection relationship between the middle-tier (single / multi-layer) nodes; 3) maintaining the relationship between the middle-tier node and the source site of the website that needs to be accelerated Connection.

2. Form and send the second to Nth routing tables:

The control center receives the detection result sent by the controller client, comprehensively judges the network quality according to the round-trip delay between each node and the target IP, and the target IP packet loss rate, selects the optimal next hop target node IP for each node, and extracts the The connection relationship between each node and the optimal next hop is described. The first routing table is adjusted to form the second to Nth routing tables (that is, the routing table to be updated subsequently), and each relationship table is updated, and the updated relationship table is sent. To each POP point. The comprehensive judgment of the network quality includes preferentially selecting the next hop IP with the lowest packet loss rate, and if the packet loss rate is the same, selecting the next hop IP with the smallest round trip delay between the node and the target IP.

Third, the controller client:

The control module in the controller client receives the relationship table issued by the control center, obtains the node connection relationship in the relationship table, and obtains all possible IP addresses of the next hop of the node. Perform network detection with all IP addresses of the next hop, get the detection result, and send the detection result to the control center. The detection result includes: the detection machine name, the detection target IP, the round-trip delay between the local node and the target IP, and the target IP packet loss rate. The detection and reporting result cycle is preferably once every 1 minute.

Fourth, the forwarding plane:

The forwarding plane is located in each POP point. When the POP point receives a user's access request to the website domain name that needs to be accelerated, it forwards the user request according to the next hop IP determined in the second to Nth routing tables in the control client. Go to the POP point corresponding to the next hop IP until the access request reaches the source station IP corresponding to the accelerated website domain name.

The specific process is shown in Figure 2, including:

Step 201: Receive related configuration information of a website that needs to be accelerated, and convert the configuration information into text information with a specific format;

Step 202: Parse the domain name address and IP list of the website to be accelerated in the text information to form a first routing table;

Step 203: Periodically detect all next hop IPs according to the first routing table, and report the detection results periodically;

Step 204: Update the first routing table according to the detection result to form a second routing table.

Step 205: Determine the optimal next hop IP address according to the second routing table, and the user requests to reach the website source site from the POP point through the confirmed IP address of each hop.

This article also provides a virtual cloud network control system, including:

I. Controller client module (referred to as client module):

1. Data synchronization module;

2. Data detection module;

3. Southbound interface;

4. Data analysis module.

Second, the controller server module (referred to as the server module):

1. Data synchronization module.

2. Data analysis and statistics module.

3. Northbound interface.

In the above-mentioned virtual cloud network control system, the configuration center sends the server-side module configured by the customer to the SD-WAN controller through the northbound interface of the server-side module. The server-side module first passes the data through the data analysis and statistics module to determine the current client configuration Whether the format is valid. If it is invalid, an error message is returned to the configuration center. If the format is valid, the customer configuration is analyzed, and then the customer routing information is generated through the customer configuration according to a certain algorithm, and the customer routing information is stored in the data synchronization module on the server.

The data synchronization module on the server side and the data synchronization module on the client side will communicate, so that the customer routing information will be synchronized to the client side.

The data parsing module of the client sends the customer routing information to the data forwarding plane through the southbound interface. When the data forwarding plane receives the customer routing information of the SD-WAN controller, it will change the routing table according to the corresponding information.

The data detection module of the client periodically detects the network performance, and sends the detection results to the data analysis module of the server. The data analysis module of the server decides better routing information for the customer according to the current network performance, and then sends it to the data synchronization module. Other servers and clients.

The customer request process is as follows:

1. The customer sends the information to the nearest POP point;

2.The SD-WAN data forwarding plane will forward the data to the user's data center or other campus based on the routing information issued by the SD-WAN controller.

3. If no routing information is found on the SD-WAN data forwarding plane, then forward this information to the data analysis module of the SD-WAN controller

4. The SD-WAN data analysis module will generate the corresponding routing information according to the current request information. If the routing information cannot be generated automatically, an error will be reported and an alarm will be issued. At this time, the corresponding routing information will be manually added.

This article also provides a virtual cloud network control method, taking the controller server as an SD-WAN controller as an example.

The configuration center sends data in the following format to the controller server

{

"domain": "www.xx.com",

"edge_pop_list": ["test1", "test2"],

"parent_list": ["ptest1", "ptest2"],

"config": {xxx}

}

The controller server will take out the contents of the two lists (that is, the two IP lists), and then take out the data in the config and send it to all the POP points respectively.

At this time, each POP point has an initial routing table, and then delivers the initial routing table to each POP point. The controller can dynamically adjust the routing table of each POP point according to the network status, and then deliver it to the corresponding POP point.

2. The SD-WAN controller can dynamically adjust the customer routing configuration based on the network information detected by the client, and then deliver it to the forwarding plane.

details as follows:

Detection results:

Each POP point will send the detection result to the control center, and then the control center will pass a trade-off based on the packet loss rate and rtt in the result.

For example: There are two paths from POP point A to POP point B, which are P1 and P2. The overall packet loss rate of the P1 path is 8%, and the rtt is 20ms. The overall packet loss rate of the P2 path is 0.0%, and the rtt is 40ms. Then P2 will be selected at this time. The principle used is that when the difference between the packet loss ratios of the two paths exceeds (inclusive) 6%, the path with the smaller packet loss ratio is selected.

If the packet loss rate is the same, the path with a smaller rtt is used.

For example, a part of the routing table is as follows:

www.alibaba.com:[ip1, ip2, ip3]

For a certain moment, the routing table is static, that is, for a user request, the routing table is determined at this time, and the user's request can only be sent to the corresponding domain names in the routing table IP.

When a user initiates a request to www.alibaba.com, then this request will be sent to one of ip1, ip2, ip3,

It is first sent to ip1, if ip1 is not available, it is sent to ip2, and so on.

For the entire system, the routing table of each POP point is different and is "dynamic". The controller client will detect the network information and then send the result to the controller center. Once every minute) Integrate all the results, then generate a new routing table for each POP and send it to the controller client, and the controller client sends this routing table to the SD-WAN forwarding plane. At this time, the routing table The information is updated.

Each POP point only knows the next hop IP of the corresponding domain name;

For the entire system, each POP knows the IP of its next hop, so the overall view forms a path:

User Request-> ip a-> ip b-> ...-> Destination

Each node in the entire system does not need to know the complete path, because there are many types of path combinations, and each POP point only needs to know the next-hop destination IP address, which ensures that the local logic is simple and does not need to consider the whole.

When the optimal next-hop destination IP addresses of the POP points on the entire path are combined, a dynamically changing path is formed naturally, that is, the current optimal path.

This article also provides a network device, whose structure is shown in Figure 3, including:

An information collection module 301 is configured to receive detection result information sent by each POP point, where the detection result information includes connection quality information between the POP point and each possible next hop target IP address;

The routing optimization module 302 is configured to select an optimal next hop target IP address of each POP point according to the detection result information and related information, and generate a routing table including the optimal next hop target IP address information, and The routing table is updated to each POP point, and the related information includes at least any one or any of the following information:

The device further includes a configuration information receiving module 303;

The configuration information receiving module 303 is configured to receive configuration information sent by a configuration center, where the configuration information carries at least one IP list;

The routing optimization module 302 is further configured to extract the at least one IP list, and generate an initial routing table of each POP point according to the at least one IP list, and the initial routing table includes a list of available POP points. One hop destination IP address.

This article also provides a network device, whose structure is shown in Figure 4, including:

The network detection module 401 is configured to perform network detection on all possible next hop target IP addresses according to the initial routing table, and generate detection result information;

An information reporting module 402 is configured to send the detection result information to a software-defined wide area network SD-WAN controller for the SD-WAN controller to update a routing table.

The device also includes:

The routing information management module 403 is configured to receive the initial routing table sent by the SD-WAN controller, and the initial routing table carries all possible next hop target IP addresses of the POP point.

The routing information management module 403 is further configured to receive a routing table sent by the SD-WAN controller, and update the locally stored routing table to the route received from the SD-WAN controller closest to the current time. table.

The device also includes:

The forwarding platform 404 is configured to determine a next-hop target IP address according to a locally stored routing table when the access request is received, and forward the access request to the next-hop target IP address.

This article also provides a virtual cloud network control system, including an SD-WAN controller and at least one POP point;

Customers do not need to purchase openflow equipment, they only need to provide basic information, such as public network IP, internal network IP, subnet mask, campus or data center location, etc., to generate the best acceleration solution, and then issue it to each This node can be used in a short time.

Intelligent selection of optimal routes. The SD-WAN controller can detect the network status in real time, and count the controller detection results of all POP points, calculate the optimal route through a specific algorithm, and then send it to each POP point.

Utilize CDN network. CDN nodes cover a wide range. You can use idle CDN nodes to set up POPs, which can improve resource utilization. The user does not need to purchase openflow equipment, and the request directly reaches the POP point closest to the user. Save costs and improve system security.

This document also provides a computer-readable storage medium having stored thereon a computer program that, when executed, implements the steps of the virtual cloud network control method provided herein.

This document also provides a computer device including a processor, a memory, and a computer program stored on the memory. When the processor executes the computer program, the steps of the virtual cloud network control method provided herein are implemented.

Fig. 5 is a block diagram of a device 500 for controlling a virtual cloud network, according to an exemplary embodiment. For example, the apparatus 500 may be provided as a server. Referring to FIG. 5, the apparatus 500 includes a processor 501, and the number of processors may be set to one or more according to requirements. The apparatus 500 further includes a memory 502 for storing instructions executable by the processor 501, such as an application program. The number of memories can be set as required or one or more. It can store one or more applications. The processor 501 is configured to execute instructions to execute the above-mentioned virtual cloud network control method.

This article provides a virtual cloud network control method, system, and network device. By collecting the detection result information sent by each POP point, according to the relevant information and the detection result information, the POP point and each possible next hop target IP address The quality information of indirect connection, select the optimal next hop target IP address of each POP point, and generate a routing table containing the optimal next hop target IP address information, and update the routing table to each POP point. Realized the construction of dynamic optimal access path, and solved the problems of expensive deployment of WAN network, long deployment cycle, unconscious service, and low operation and maintenance efficiency.

Those skilled in the art should understand that the embodiments herein may be provided as a method, an apparatus (device), or a computer program product. Therefore, this document may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this document may take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code therein. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology used to store information such as computer-readable instructions, data structures, program modules or other data Including, but not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or may be used for Any other medium or the like that stores the desired information and can be accessed by the computer. In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium .

This document is described with reference to flowcharts and / or block diagrams of methods, apparatus (equipment) and computer program products according to embodiments herein. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that the instructions generated by the processor of the computer or other programmable data processing device are used to generate instructions Means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a specific manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

As used herein, the terms "including", "comprising", or any other variation thereof are intended to encompass non-exclusive inclusions, such that an article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed Elements, or elements that are inherent to such articles or equipment. Without more restrictions, the elements defined by the sentence "including ..." do not exclude that there are other identical elements in the article or equipment including the elements.

Although the preferred embodiments have been described herein, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic inventive concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this document.

Obviously, those skilled in the art can make various modifications and variations to this document without departing from the spirit and scope of this document. In this way, if these modifications and variations herein fall within the scope of the claims herein and their equivalent technology, the intention here is to include these modifications and variations.

Industrial applicability

This article collects the detection result information sent by each POP point, and selects the optimal next point for each POP point according to the relevant information and the connection quality information between the POP point and each possible next hop target IP address contained in the detection result information. Hop the target IP address, and generate a routing table containing the optimal next hop target IP address information, and update the routing table to each POP point. Realized the construction of dynamic optimal access path, and solved the problems of expensive deployment of WAN network, long deployment cycle, unconscious service, and low operation and maintenance efficiency.

Claims

A virtual cloud network control method includes:

The software-defined wide area network SD-WAN controller receives detection result information sent by each network service providing point POP point, and the detection result information includes connection quality information between the POP point and each possible next hop target IP address;

The SD-WAN controller selects the optimal next-hop target IP address of each POP point according to the detection result information and related information, and generates a routing table containing the optimal next-hop target IP address information. The routing table is updated to each POP point, and the related information includes any one or more of the following information:

Cost information, policy information, historical connection information, area information, POP point type information.
The method for controlling a virtual cloud network according to claim 1, wherein before the step of the SD-WAN controller receiving the detection result information sent by each POP point, further comprising:

The SD-WAN controller receives configuration information sent by a configuration center, and the configuration information carries at least one IP list;

The SD-WAN controller extracts the at least one IP list, and generates an initial routing table for each POP point according to the at least one IP list, and the initial routing table includes a next hop target available for each POP point. IP address

The SD-WAN controller sends a corresponding initial routing table to each POP point.
The method for controlling a virtual cloud network according to claim 1, wherein the detection result information includes any one or any of the following information:

Detection machine name, detection target IP, round-trip delay between the POP point and the target IP address, and packet loss rate of the target IP address.
A virtual cloud network control method includes:

The POP point performs network detection on all possible next-hop target IP addresses according to the initial routing table, and generates detection result information;

The POP point sends the detection result information to a software-defined wide area network SD-WAN controller for use by the SD-WAN controller to update a routing table.
The method for controlling a virtual cloud network according to claim 4, wherein the detection result information includes any one or any of the following information:

Detection machine name, detection target IP, round-trip delay between the POP point and the target IP address, and packet loss rate of the target IP address.
The method for controlling a virtual cloud network according to claim 4, wherein before the step of generating the detection result information by performing network detection on all possible next hop target IP addresses, the POP point further comprises:

The POP point receives and stores the initial routing table sent by the SD-WAN controller, and the initial routing table carries all possible next hop target IP addresses of the POP point.
The method for controlling a virtual cloud network according to claim 4, further comprising:

The POP point receives the routing table sent by the SD-WAN controller, and updates the locally stored routing table to the routing table received from the SD-WAN controller closest to the current time.
The method for controlling a virtual cloud network according to claim 7, wherein the method further comprises:

When the POP point receives the access request, it determines the next hop target IP address according to the routing table stored locally, and forwards the access request to the next hop target IP address.
A network device includes:

An information collection module, configured to receive detection result information sent by each POP point, where the detection result information includes connection quality information between the POP point and each possible next hop target IP address;

A route optimization module is configured to select an optimal next hop target IP address of each POP point according to the detection result information and related information, and generate a routing table including the optimal next hop target IP address information, The routing table is updated to each POP point, and the related information includes any one or more of the following information:

Cost information, policy information, historical connection information, area information, POP point type information.
The network device according to claim 9, further comprising a configuration information receiving module;

The configuration information receiving module is configured to receive configuration information sent by a configuration center, and the configuration information carries at least one IP list;

The routing optimization module is further configured to extract the at least one IP list and generate an initial routing table for each POP point according to the at least one IP list, and the initial routing table includes a next available one for each POP point Jump destination IP address.
A network device includes:

A network detection module, configured to perform network detection on all possible next-hop target IP addresses according to the initial routing table, and generate detection result information;

An information reporting module is configured to send the detection result information to a software-defined wide area network SD-WAN controller for use by the SD-WAN controller to update a routing table.
The network device according to claim 11, further comprising:

A routing information management module is configured to receive the initial routing table sent by the SD-WAN controller, and the initial routing table carries all possible next hop target IP addresses of the POP point.
The network device according to claim 11, wherein:

The routing information management module is further configured to receive a routing table sent by the SD-WAN controller, and update the locally stored routing table to the routing table received from the SD-WAN controller closest to the current time. .
The network device according to claim 11, further comprising:

The forwarding platform is configured to determine a next-hop target IP address according to a locally stored routing table when the access request is received, and forward the access request to the next-hop target IP address.
A virtual cloud network control system including a software-defined wide area network SD-WAN controller and at least one POP point;

The POP point is used to perform network detection on all possible next hop target IP addresses according to the initial routing table, to generate detection result information, and send the detection result information to a software-defined wide area network SD-WAN controller for use by The SD-WAN controller is used to update the routing table.

The SD-WAN controller is configured to receive detection result information sent by each of the POP points, and according to connection quality information between the POP point and each possible next hop target IP address carried in the detection result information , Selecting the optimal next hop target IP address of each POP point, and generating a routing table containing the optimal next hop target IP address information, and updating the routing table to each POP point.
The virtual cloud network control system according to claim 15, wherein:

The SD-WAN controller is further configured to receive configuration information sent by a configuration center, carry at least one IP list in the configuration information, extract the at least one IP list, and generate each POP according to the at least one IP list The initial routing table of the point, which includes the next hop target IP address available to each POP point in the initial routing table, and sends the initial routing table to each POP point;

The POP point is further configured to receive and save the initial routing table sent by the SD-WAN controller.
A computer-readable storage medium having stored thereon a computer program that, when executed, implements the steps of the method according to any one of claims 1-3.
A computer-readable storage medium having stored thereon a computer program that, when executed, implements the steps of the method according to any one of claims 4-8.
A computer device includes a processor, a memory, and a computer program stored on the memory. When the processor executes the computer program, the steps of the method according to any one of claims 1-3 are implemented.
A computer device includes a processor, a memory, and a computer program stored on the memory, and when the processor executes the computer program, the steps of the method according to any one of claims 4 to 8 are implemented.