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Cisco Bug: CSCvv88621 - GETVPN: All GM will crash when Primary KS recovers its COOP role after network outage

Last Modified

Oct 08, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

16.6.8

Description (partial)

Symptom:
All GM will crash after applying workaround for bug CSCvr31188 i.e. removing ipd3p config from KSs:

> crypto gkm group GROUP1
>   no sa d3p window sec 8

followed by this sequence of events:

1. Network issues cause Primary KS to lose connectivity with Secondary KSs member of COOP
2. Secondary KS is promoted as the new Primary KS
3. old Primary KS is reloaded and after it boots it sees itself as the Primary KS again
4. Network issues go away and split-bran condition disappears
5. After a couple of seconds all of the GMs will crash

Conditions:
KS COOP
Workaround for CSCvr31188 is applied
Split-brain condition due to network issues
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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