METHOD AND DEVICE FOR ESTABLISHING LAYER 2 VIRTUAL PRIVATE NETWORK SERVICES

摘要

Disclosed are a method and device for establishing an L2VPN, used for solving the problem of poor support that an SND network architecture has for L2VPN services. The method comprises: a first controller receives a first label mapping message from a second controller, where the first label mapping message carries a PW ID, an IP address of a first packet forwarding device controlled by the first controller, an IP address of a second packet forwarding device controlled by the second controller, and a PW label assigned by the second controller to a PW identified by the PW ID; the first controller determines, on the basis of the IP address of the first forwarding device and the IP address of the second forwarding device that are carried by the first label mapping message, a tunnel between the first packet forwarding device and the second packet forwarding device used for bearing the PW identified by the PW ID; and, the first controller generates, on the basis of the tunnel determined, a label forwarding entry and issues the label forwarding entry to the first packet forwarding device.