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port state during the topology changing (STP)

if a forwarding (or block) port keep in forwarding ( or block) state after a topology changing, what is it state during the topology changing?

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Bronze

Re: port state during the topology changing (STP)

there are four states of the spanning tree - listenining, learning, forwarding n blocking. Depending the position and role of the switch, during the spanning tree convergence process, it goes thru the whole cycle if the port doesn;t have any portfast or other spanning tree features on,,

Here is the good URL for your ref..

http://www.cisco.com/warp/customer/473/#SpanningTree

Hope this helps

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