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Cisco Bug: CSCum62893 - vPC secondary peer-link may be stuck in STP designated blocking/dispute

Last Modified

Feb 11, 2018

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

6.2(6)

Description (partial)

Symptom:
On a vPC pair of nexus 7000 switches, the peer-link on the vPC secondary may get permanently stuck in blocking state if it ever received an 
malformed BPDU on the peer-link.

Conditions:
This issue is observed on a vPC pair of nexus 7000s running peer-switch.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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