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Cisco Bug: CSCup76000 - IPsec post rekey SA deletion behavior incorrect

Last Modified

Jul 09, 2019

Products (21)

  • Cisco IOS
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(2)S

Description (partial)

Symptom:
IPsec Tunnel may flap under certain network conditions.

Conditions:
IPsec Quick Mode Message 3 is lost during transit over the network.  The old SA gets deleted 7 seconds after the QM3 message is sent.  On the responder the tunnel is marked as being down until Quick Mode retransmits.
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