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Cisco Bug: CSCvs06119 - ACI many switches crash with corefile at same time due to ntp policy apply

Last Modified

Oct 06, 2020

Products (25)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 9396TX Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 93120TX Switch
  • Cisco Nexus 93240YC-FX2 Switch
  • Cisco Nexus 9504 Switch
  • Cisco Nexus 93108TC-EX Switch
  • Cisco Nexus 9372TX-E Switch
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Known Affected Releases

14.1(2s) 14.2(2f) 14.2(3j)

Description (partial)

Multiple switches crash and generate a core file at same time when applying an NTP policy.

*************** module reset reason (1) *************
0) At 2019-11-12T17:33:34.865+08:00
    Reason: reset-triggered-due-to-ha-policy-of-reset
    Service:ntp hap reset
    Version: 14.2(2f)
1) At 2019-11-12T14:59:31.881+08:00
    Reason: reset-by-installer
    Version: 14.1(2s)
2) At 2019-11-11T14:54:49.820+08:00
    Reason: reset-triggered-due-to-ha-policy-of-reset
    Service:ntp hap reset
    Version: 14.1(2s)

Issue has been repro'd in these conditions:

1. Have existing NTP providers configured and enabled. In this case is one of them.
2. Disable NTP policy
3. Delete NTP provider
4. Reconfigure ntp provider
6. Enable the ntp policy

This has been consistently reproduced if timeserver is set to FQDN (or This issue is not seen if the NTP provider is configured to be an ip address rather than FQDN. It is also not seen when the FQDN is used with other ntp provider servers. Only reproducable with
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