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Cisco Bug: CSCvs16767 - MFDM core with Policy downgrade from IMR2 to Hplus

Last Modified

Jan 21, 2020

Products (24)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 9396TX Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 93120TX Switch
  • Cisco Nexus 93240YC-FX2 Switch
  • Cisco Nexus 93108TC-EX Switch
  • Cisco Nexus 9372TX-E Switch
  • Cisco Nexus 9332C Switch
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Known Affected Releases

14.1(2g) 14.1(2u)

Description (partial)

Symptom:
The Multicast FIB Distribution (MFDM) process crashes when processing an fmgroup update that comes from the spine switch.

Conditions:
This issue happens when a remote leaf switch in the Remote Leaf Direct mode in the 14.1(2) release receives an unknown type-length-value (TLV) from the spine switch. This situation occurs when Remote Leaf Direct (RLD) is enabled and spine switches are upgraded to the 14.2(2) release, which adds a new TLV in the fmgroup message.
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Bug Details Include

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