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Cisco Bug: CSCuq76685 - N5K: slow convergence with lots of VLANs trunked

Last Modified

Nov 27, 2020

Products (1)

  • CiscoPro Workgroup EtherSwitch Software

Known Affected Releases


Description (partial)

When a vPC port got shut, the time to switchover the path from vPC port to vPC peer-link increases along with the number of configured VLANs on those ports.
The same thing happens when the vPC port becomes UP again.

Example Topology:

shut ->  /      \            <= vPC port
  [ N5K-1 ] === [ N5K-2 ]  <= vPC peer

Traffic Flow : R2 -> N5K-1 -> R1
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