Patent ID: 7822054
Filing Date: 2010-10-26
Classification: H04L

Abstract:
1. A Provider Edge device (PE) for performing edge to edge pseudo wire emulation (PWE3) of a bundling interface, comprising: a bundling interface creating module at the PE, adapted to create the bundling interface at the PE and create a point-to-point pseudo wire (PW) on the bundling interface, wherein the bundling interface comprises at least two member interfaces; a sub-channel number assigning module at the PE, adapted to assign a different sub-channel number for each member interface of the bundling interface, thus differentiating different member interfaces, wherein the sub-channel number of the member interface of the bundling interface at two ends of the PW is one to one mapping; a bundling parameter negotiating module at the PE, adapted to negotiate bundling parameter to realize one-to-one link negotiation of the member interfaces across a packet switching network (PSN), wherein the bundling parameter comprises a bundling ability type indicating whether the PE or its remote PE has bundling ability; and a message forwarding module at the PE, adapted to obtain the sub-channel number of the member interface of the bundling interface, encapsulate the sub-channel number into a Control Word, encapsulate a message received from the member interface with the Control Word, an inner label and an outer label, and forward the encapsulated message to the remote PE, wherein the inner label determines the PW and the outer label determines PEs at the two ends of the PW.