I have a situation, where an Edge Switch is connected to the campus network by a single trunk port to the distribution switch. The issue is, the trunk for some reason is blocking this particular vlan, while the other vlans are in functional (forwarding state).
I wonder if there is a way to recover the blocked vlan back to the forwarding state without impacting the other vlans on the trunk.
Appreciate your expertise.
Ah, I did not think of this one;-)
This is a mismatch in the native vlan configuration of the trunk.
Check both ends of your trunk. It should have the same vlan specified in:
switchport trunk native vlan X
(if the command is not appearing, the default native vlan is 1).