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Cisco Bug: CSCvv15047 - PTP sync lost after ISSU , router is stuck at FREERUN on NCS560

Last Modified

Sep 03, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

7.1.2.BASE

Description (partial)

Symptom:
After ISSU , PTP clock went to FREERUN and never got recovered. It is observed that sync packets are received from master , but delay request sent from peer is dropped at master router resulting in this situation.

Conditions:
When ISSU is done on MASTER node, it has stopped accepting delay requests from peer.
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