Route managing method and route method and network controller and router

Abstract

The invention relates to the communication field and discloses a route managing method and a route method and a network controller and a router. The route managing method includes: receiving established requests of two-layer virtual private network by the network controller, and confirming route information of a tunnel where messages between two local area networks at will pass when a public network transmits according to route information of each router in the public network and connecting information of each local area network and the public network by the network controller; according to the route information of each tunnel, confirming each router to transmit transmission information of the messages along each tunnel, distributing labels for each router where each tunnel passes through and process information to the labels before each router transmits the message; respectively sending control information to each router to provide each router to transmit the messages according to the control information of each route. According to the route managing method and the route method and the network controller and the router, calculated cost of the router in the public network is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a route management method, a route method, a network controller and a router. Background technique [0002] Layer 2 Virtual Private Network (Layer2Virtual Private Network, referred to as L2VPN) can enable geographically dispersed multiple local area networks (Local Area Network, referred to as LAN) to communicate through the public network, the public network can be but not limited to public multi-protocol The label switching (Multi-Protocol Label Switching, MPLS for short) network can also be other Internets capable of running label protocols. E.g figure 1 LAN N1 and LAN N2 belong to L2VPN A, and L2VPN A includes LAN N1, LAN N2, and the public MPLS network connected between N1 and N2. For example, N1 can be a LAN of Company A located in Beijing, and N2 is a company of A located in Shanghai. In another LAN, N1 and N2 can communicate through the public MPLS network, and N3 and N4 belon...

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

Images