Preview Tool

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


Description (partial)

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.

When ISSU is done on MASTER node, it has stopped accepting delay requests from peer.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.