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Cisco Bug: CSCuj53943 - Multicast packets are dropped after "clear crypto gdoi ks members"

Last Modified

Feb 28, 2018

Products (84)

  • Cisco IOS
  • Cisco 2951 Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 888W Integrated Services Router
  • Cisco 892W Integrated Services Router
  • Cisco 1905 Serial Integrated Services Router
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco 881SRSTW Integrated Services Router
  • Cisco 819 Hardened Integrated Services Router
  • Cisco C892FSP Integrated Services Router
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Known Affected Releases

15.3(2)T3.1 15.3(3)M2.7 15.4(0.26)T0.1 15.4(1)T1 15.4(1)T1.3 15.4(1)T2.2 15.4(1.14)T 15.4(1.24)T0.1 15.4(1.4)T 15.4(2)T1 15.4(2)T1.1 15.4(2.11)T 15.4(2.2)T 15.4(2.20)M0.2 15.4(3)M0a

Description (partial)

Multicast traffic gets dropped a few seconds after issuing "clear crypto gdoi ks members" on the primary KS.

This symptom is observed under the following conditions:
1. GMs are registered to the KS with a policy that includes multicast and unicast traffic. Traffic goes fine.
2. Change the KS policy to "permit ip any any" and configure GM local ACL.
3. Issue "clear crypto gdoi ks members" on the primary KS.
4. The GMs correctly reduce TEK lifetime and continue sending traffic. However, some 70 seconds before TEK expiry, multicast traffic starts getting dropped.
Unicast traffic is still going fine.
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