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Cisco Bug: CSCtb39514 - vPC shows as connected to diff switch after vPC config remove/restore

Last Modified

Feb 15, 2018

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

During initial configuration, a vPC may fail consistency-check with the below

N7k# sh vpc
vPC status
id   Port   Status Consistency Reason                     Active vlans
--   ----   ------ ----------- -------------------------- ------------
2    Po2    up     failed      vpc port channel           -          
                               mis-config due to vpc                 
                               links in the 2 switches               
                               connected to different                

show vpc consistency-parameters vpc <i><vpc_id></i> command will show
different mac-addresses in the lag-id between the local and peer Nexus.

Issue can be seen if the same physical interface is initially configured with
a vPC port-channel, then config is removed and interface is reconfigured with
another vPC port-channel. Issue occurs due to the lag-id not matching the
lag-id last sent to vpc manager.
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  • Status
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