Pseudo-wire (PW) dual-homing protection switching method
A protection switching and pseudo-wire technology, applied in the field of communication, can solve the problems of slow switching speed, consumption of system resources, long switching time, etc., and achieve the effect of reducing protection switching time and avoiding repeated refreshing
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[0021] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and examples.
[0022] An embodiment of the present invention provides a protection switching method for a pseudowire PW, see figure 1 As shown in the pseudowire dual-homing network, it usually includes a source node and two next-hop nodes, and the source node and the two next-hop nodes respectively form an LSP.
[0023] see figure 2 In this implementation case, the identification bit is set at the source node to associate with the LSP carrying the pseudowire. When the link fails, the status of the identification bit is changed when the pseudowire is deleted through the LSP to trigger a protection switching operation.
[0024] Specifically, see image 3 :
[0025] When the network is normal, the service module of the source node respectively creates an identification bit for the next hop of the active and standby PWs, associates the identification bit with the ...
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