Symptom

VLAN is removed from active VLANs list on vPC peer-link port-channel after VLAN vn-segment configuration changes.

Conditions

This symptom may occur when VLAN vn-segment configuration changes are done at the some time on both vPC peers. In the issue state the VLAN is not displayed under "show vpc" active VLANs list on vPC peer-link port-channel.

Workaround

Delete/re-configure the missing VLAN on both vPC peers: no vlan vlan vn-segment

Further Problem Description