Change Spanning-Tree Root Bridge

Discussion in 'Cisco' started by tmcgov05, Jul 30, 2009.

  1. tmcgov05

    tmcgov05 Guest

    Due to some topology changes in my switched environment, I would like
    to change the root bridge from Switch A to Switch B. Initially I used
    the CATOS command "set spantree root 1-4094" on Switch A which set the
    Spanning Tree Priority to 24576 for all VLANS.

    If I go to Switch B and also issue the "set spantree root 1-4094"
    command, will the Spanning Tree Priority on the original Root (Switch
    A) be automatically changed or must I change it manually ? All other
    switches in the environment have a priority of 49152.

    Basically, is there a best practice procedure for changing the Root
    bridge in terms of changing the STP priorities or can I just use the
    "set spantree root 1-4094" command ?
    tmcgov05, Jul 30, 2009
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  2. tmcgov05

    John Agosta Guest

    Change priority to 0, and look up "root guard" at
    John Agosta, Jul 31, 2009
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