STP problem

[bibo]

I have Catalyst 2950 with IOS version 12.1.12c. When some ports are in blocked state, on my show spanning tree command i get , instead of blk, bkn*.

Does anyone knows what is it?

[Prashanth Krishnappa]

Broken state (BKN*) for an inconsistency status. The port would be either root inconsistent, loop guard inconsistent, PVID inconsistent, or type inconsistent.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/12111bex/cmdref/show1.htm#18716

[bibo]

Thanks a lot!