Symptom
Xconnect (PW) may stay down upon execution of "clear isis process" several times if "remote propogate-statue" feature is enabled on NCS5500. This issue is platform specific.
Conditions
Perform "clear isis process" several times.
The above trigger result in pseudowire flap which is expected but due to a race condition, AC interface will stay down permanently and hence the associated pseudowire.
Workaround
shut, no shut the affected AC interface.
Further Problem Description
In the lab setup with 40 Psuedowires (each with unique AC physical interface) issue was reproduced only when trigger "clear isis process" performed 40-50 times.
