Figure 1 displays VLL resilience for a switched pseudowire path example. An example configuration follows.
T-PE-1
configure service epipe 1
endpoint X
exit
endpoint Y
revert-time 100
standby-signaling-master
exit
sap 1/1/1:100 endpoint X
spoke-sdp 1:100 endpoint Y
precedence primary
spoke-sdp 2:200 endpoint Y
precedence 1
spoke-sdp 3:300 endpoint Y
precedence 1
T-PE-2
configure service epipe 1
endpoint X
exit
endpoint Y
revert-time 100
standby-signaling-slave
exit
sap 2/2/2:200 endpoint X
spoke-sdp 4:400 endpoint Y
precedence primary
spoke-sdp 5:500 endpoint Y
precedence 1
spoke-sdp 6:600 endpoint Y
precedence 1
VC switching indicates a VC cross-connect so that the service manager does not signal the VC label mapping immediately but puts S-PE-1 into passive mode, as follows:
configure service epipe 1 vc-switching
spoke-sdp 1:100
spoke-sdp 4:400