A method and controller for routing information distribution and update in SD-WAN network

Abstract

The invention discloses a method for distributing and updating routing information in an SD-WAN network and a controller, relating to the field of controllers and routing, including collecting routing information after the SD-WAN controller is connected to the SD-WAN network, and converting the entire network The routing information, the routing information sent to the device, and the routing information associated with the network are stored separately; when the user establishes a service, the controller sends part of the routing information to the associated device as needed according to the network identifier and routing prefix, and stores the information of the network and the device. corresponding relationship, and refresh the mapping relationship between routing information and network. In the method for distributing and updating routing information in the SD-WAN network of the present invention, the SD-WAN controller serves as the control plane to establish a connection with the device, centrally manage the device, collect the routing information of the SD-WAN network and update it in time, so that the device is only responsible for forwarding, Improve data forwarding performance.

Description

technical field [0001] The invention relates to the field of routing controllers, in particular to a method for distributing and updating routing information in an SD-WAN network and a controller. Background technique [0002] With the development of network technologies such as virtualization, cloud computing, big data, SDN (Software Defined Network) / NFV (Network Function Virtualization, network function virtualization), the application requirements of servers are diversified, and end-user services can be Customization has grown dramatically. Traditional networks have been unable to meet flexible scheduling of resources, customized service deployment and rapid application launch. SDN network technology has emerged to separate the network control plane from the data plane, dynamically adjust network configuration, and provide agile network support for services. [0003] The SDN controller needs to rely on southbound protocols (such as Netconf) and routing models (such as Ya...

AI Technical Summary

Problems solved by technology

[0006] 2. In the WAN network, the device acting as a BGP (Border Gateway Protocol, Border Gateway Protocol) route reflector is connected to the controller, which will increase the connection burden of the controller, as well as increase network traffic and equipment costs;

[0007] 3. At present, all clients under the route reflector belong to peers, and they are uniformly processed in the same way, and cannot be differentiated

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