Spanning-Tree and redundant links

Posted by Franko on Server Fault See other posts from Server Fault or by Franko
Published on 2012-04-03T08:53:34Z Indexed on 2012/04/03 11:33 UTC
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cisco

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switch

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spanning-tree

I have 2 switches which have redundancy between them, meaning fa0/1 on SW1 is connected to fa0/1 on SW2, and fa0/2 on SW1 is connected to fa0/2 on SW2.

Both of the switches have the same BID, however the MAC address of SW1 is numerically lower, hence making it the root bridge.

Now my question is, on SW2, what determines which of fa0/1 and fa0/2 becomes the RP (Root Port) and the other on blocking state?

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