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Cisco Bug: CSCtc28760 - vPC: up to 30sec traffic loss on HSRP state flap due to l2fm prgming

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

Up to 30 seconds traffic interruption when HSRP state changes in a vPC environment, for example when reloading the HSRP primary peer with preempt enabled.

Nexus 7000 Series switches configured as vPC cluster with HSRP. This defect may depend on the HSRP timers, preempt configuration, and number of vPCs/HSRP groups, so will not be seen in all environments.

Disable HSRP preempt.

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