Patent ID: 8964749
Filing Date: 2015-02-24
Classification: H04L

Abstract:
1. A method for establishing a Pseudo Wire (PW), the method comprising: receiving, by a first switching node, a first control message comprising a first PW label, Forwarding Equivalence Class (FEC) information and first routing information, wherein the first routing information comprises an identifier of the first switching node which is required to be passed for establishing a Multi-Segment Pseudo Wire (MS-PW) from a first terminal node to a second terminal node, the first control message comprises an identifier of a next-hop of the first switching node and the next-hop is a node in the MS-PW, and the FEC information comprises an identifier of the second terminal node; if there is no further identifier following the identifier of the first switching node in the first routing information, obtaining the identifier of the second terminal node from the FEC information as the identifier of the next hop; deleting the identifier of the first switching node from the first routing information; based on the deletion of the identifier of the first switching node from the first routing information, constructing a second control message comprising a second PW label and the FEC information; and sending the second control message to the next-hop corresponding to the identifier of the next-hop.