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Spanning tree root guard

Hi all,

I have read the artical about the root guard, it seems I am not quite understand about it.

Does root guard is configured on the switch port which is going to connect to a new switch with

spanning tree priority (e.g. 4096) . The purpose of root guard is to avoid new switch to become root bridge if existing

root bridge has priority (e.g 8192)

1 REPLY
Cisco Employee

Re: Spanning tree root guard

Hi Friend,

I believe you understood the purpose of root guard.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12240se/scg1/swstpopt.htm#wp1031307

HTH

Ankur

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