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Cisco Bug: CSCul57658 - PMTU IPv6 GRE packet not fragmented properly

Last Modified

Feb 13, 2018

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 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(1)S 15.4(2)S

Description (partial)

Symptom:
IPv6 GRE packets are not fragmented properly with PMTU configured. Traffic is flowing, but IPv6 mtu cache is empty.

Conditions:
When using IPV6 GRE with PMTU packets are not fragmented
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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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