spanning tree protocol

[Bethuelle]

Hye To All,

In the attached Set-Up, the link that contains the CE500 is meant to be the main link and the other the back up link. To make this possible, i configured the switches as shown on the Set-Up but notwithstanding, it's the back-up link that's the main link. Can someone help me out on this issue?

Thanks for your help in advance.

Julie

[Giuseppe Larosa]

Hello Julie,

it all depends on the root bridge position,

you need to understand who is the root bridge this can give you an explanation of why the link you would like to be blocked is in forwarding state

on catalyst you can use

show spanniing-tree commands to identify the root bridge

Hope to help

Giuseppe

edit:

the show command is

show spanning-tree