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Cisco Bug: CSCvt40523 - GETVPN: KS 16.12.x - COOP switchover causes GMs to immediately use new TEK rekey

Last Modified

Sep 10, 2020

Products (9)

  • Cisco IOS
  • Cisco 4221 Integrated Services Router
  • Cisco 4331 Integrated Services Router
  • Cisco 4321 Integrated Services Router
  • Cisco 4431 Integrated Services Router
  • Cisco 4451-X Integrated Services Router
  • Cisco 4461 Integrated Services Router
  • Cisco Cloud Services Router 1000V
  • Cisco 4351 Integrated Services Router

Known Affected Releases

16.12.1a

Description (partial)

Symptom:
Some IOS XE-based GMs immediately use a new TEK rekey after a KS COOP switchover
GMs which have not yet received the new TEK rekey are not able to decrypt incoming traffic for a couple of seconds

Conditions:
COOP KS PRI & SEC running on 16.8 or later releases;
new PRI KS has a LOWER priority than the old PRI KS;
large number of GMs in the network, affected GMs are IOS XE-based, e.g. ASR1K with recent IOS XE code
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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