Routing management method, routing method, network controller, and router

Abstract

The invention relates to the communication field, and discloses a route management method, a route method, a network controller and a router. The routing management method includes that the network controller receives a request for creating a layer-2 virtual private network, and the network controller determines that the packets between any two local area networks are in the public network according to the routing information of each router in the public network and the connection information between each local area network and the public network. The path information of the tunnels that should pass through during network transmission; according to the path information of each tunnel, determine the forwarding information of each router to forward the message along each of the tunnels, assign labels to each router passing through each tunnel, and each router is forwarding Processing information on the label before the message; sending each routing control information to each router, so that each router forwards the message according to each routing control information. By implementing the embodiment of the present invention, the calculation overhead of the router in the public network is reduced.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a route management method, a route method, a network controller and a router. Background technique [0002] The Layer 2 Virtual Private Network (Layer 2 Virtual Private Network, L2VPN for short) enables multiple local area networks (Local Area Network, LAN for short) that are geographically dispersed to communicate through the public network. The public network can be, but is not limited to, public multiple A protocol label switching (Multi-Protocol Label Switching, MPLS for short) network may also be other Internet capable of running label protocols. E.g figure 1 The local area network N1 and the local area network N2 belong to L2VPN A. L2VPN A includes the local area network N1, the local area network N2, and the public MPLS network connected between N1 and N2. For example, N1 can be a local area network of company A located in Beijing, and N2 is the location of company A Anot...

AI Technical Summary

Problems solved by technology

[0004] Label-related protocols need to be run between routers in the public network to determine the tunnel for message transmission between any two LANs of L2VPN, and routers need to assign labels to themselves, indicate label processing information, and generate routing control for this router Information, so the calculation overhead of routers in the public network is relatively large

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