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Cisco Bug: CSCtd80546 - HSRP Virtual mac-addr not flushed after VSS active failover

Last Modified

Jan 28, 2017

Products (6)

  • Cisco IOS
  • Cisco Catalyst 6500 Series Virtual Switching Supervisor Engine 720 with 10GE uplinks
  • Cisco ME 6524-GS Ethernet Switch
  • Cisco Catalyst 6500 Series Supervisor Engine 32 / MSFC2A
  • Cisco ME 6524-GT Ethernet Switch
  • Cisco Catalyst 6500 Series Supervisor Engine 720 / MSFC3

Known Affected Releases

12.2(33)SXH 12.2(33)SXI3

Description (partial)

Symptom:
  
  In a VSS using HSRP object (interface) tracking, the HSRP virtual mac-address
  is not flushed, when active VSS switch fails over to standby AND HSRP fails 
  over to a peer at the same time. As a result, connectivity to default gateway 
  may be lost.
  
  Conditions: 
 
  Issue is seen when ALL the following conditions matched.
  
  - VSS setup running 12.2(33)SXI2a or 12.2(33)SXI3.
  - This issue is seen ONLY in "IP Base" (crypto or non-crypto) image.
  - VSS is configured with HSRP object (interface) tracking. 
  - Issue is triggered only when active VSS fails over to standby and VSS becomes
    HSRP standby.
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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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