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spanning tree

 

If you have a port in the BLK state that should be in the forwarding state, how would you ensure the issue is spanning tree and how would you correct?

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Spanning tree protocol is

Spanning tree protocol is really the only mechanism that I can think of that would put a port in a BLK state. Others might put it in an error-disabled state, but blocking is pretty much a spanning tree thing.

The blocking state isn't actually a problem as it's preventing your network from creating a layer-2 loop, so there isn't really anything to correct.

What is it that you're trying to do with this port?

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