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Cisco Bug: CSCur38218 - Flapping vPC peer link causes Mac addresses to point to peer link

Last Modified

May 28, 2020

Products (7)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch
  • Cisco Nexus 3132Q Switch
  • Cisco Nexus 3172 Switch

Known Affected Releases

6.0(2)U3(3.86) 6.0(2)U4(1)

Description (partial)

Symptom:
After failing and recovering the vpc peer link, many of the mac addresses in the mac address table on the secondary vpc peer points out the vpc peer link. This cause traffic to these mac addresses to be blackholed

Conditions:
After failing and recovering the vpc peer link, many of the mac addresses in the mac address table on the secondary vpc peer points out the vpc peer link. This cause traffic to these mac addresses to be blackholed
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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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