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Cisco Bug: CSCvt97827 - ifav41-UC_DF_CHECK_FAIILURE for bridge traffic after upgrade of setup

Last Modified

Aug 11, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

15.0(0.138)

Description (partial)

Symptom:
Traffic drop is seen on remote-leaf for some EPs due to stale tunnel index on the XR EP. This issue will be seen only for the EPs which are locally learnt on the vPC port.
On a remote-leaf, in rare cases due to timing issue the XR EPs tunnel may not updated with the vPC tunnel(which became UP), leading to traffic loss until the XR entry ages out.

Conditions:
On a remote-leaf, during a fabric upgrade the XR EPs tunnel may not be updated with the vPC tunnel, leading to traffic loss until the XR entry ages out.
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