ROUTING MANAGEMENT METHOD, ROUTING METHOD, NETWORK CONTROLLER, AND ROUTER

摘要

A routing management method includes: receiving, by a network controller, a request for creating a Layer 2 Virtual Private Network, determining, according to routing information of each router in a public network and information about a connection between each local area network and the public network, path information of a tunnel that a packet between any two of the local area networks should pass by when being transmitted in the public network; determining, according to the path information of each tunnel, forwarding information that each router forwards a packet along each tunnel, and allocating, to each router that each tunnel passes by, a label and processing information that is for the label before each router forwards the packet; and sending each piece of routing control information to each router, so that each router forwards the packet. The method reduces a calculation overhead of a router in a public network.

主权项

1. A routing management method, comprising:
receiving, by a network controller, a request for creating a Layer 2 Virtual Private Network, wherein the Layer 2 Virtual Private Network comprises a public network, and at least two local area networks connected by using the public network; determining, by the network controller according to routing information of each router in the public network and information about a connection between each local area network and the public network, path information of a tunnel that a packet between any two of the local area networks should pass by when being transmitted in the public network; determining, according to the path information of each tunnel, forwarding information that each router forwards the packet along each tunnel, and allocating, to each router that each tunnel passes by, a label and processing information that is for the label before each router forwards the packet, wherein the label is a public Multi-Protocol Label Switching label; and sending each piece of routing control information to each router, wherein the routing control information comprises: the forwarding information that each router forwards the packet along each tunnel, a label corresponding to each router in each tunnel, and the processing information that is for the label before each router forwards the packet, so that each router forwards the packet according to each piece of routing control information.