1.The services configured have some issue.
2.The path communication fails because the cross-connection is incorrect or other alarms are present.
1.Check optical fibers and ensure that optical paths are stable.
2.Change the BER threshold for B3_SD alarms from 10-6 to 10-7.
3.Set the WTR time for LCAS to a value less than 5 minutes (The default WTR time for LCAS is 5 minutes. ITU-T recommends a range from 5 minutes to 12 minutes).