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Cisco Bug: CSCum37911 - ASR1K: NTP clock change affects GETVPN TBAR pseudotime

Last Modified

Nov 27, 2020

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.1(3)S2 15.2(4)S3 15.4(1)S

Description (partial)

Symptom:
With TBAR enabled, dataplane traffic may be dropped in a GetVPN environment with mixed GMs (ASR and ISR) when there is a change in the NTP clock.

Conditions:
GetVPN Config with TBAR,  and NTP clock is changed.

Related Community Discussions

<key>CSCum37911</key> - ASR1K NTP clock change affects GETVPN TBAR pseudotime
This problem still exist in ASR 1K's. I have experienced this on both ASR 1006's and 1002X's. Updating NTP will still cause the TBAR errors and drop the GDOI. However, in my experience neither Changing the time or Clearing the crypto work to restore the VPN. I cannot talk to removing TBAR as we have not been able to test this. A reboot of the router will however restore the VPN without recurring incident.
Latest activity: May 19, 2015
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