From: Donny MATEO (donny.mateo@sg.ca-indosuez.com)
Date: Wed Nov 13 2002 - 06:49:10 GMT-3
true enough, but the question is to make sure that it will never become a root switch.
suppose you do all the manual setting (If i'm not mistaken bridge priority and mac address is the
only setting you have to influence the root bridge selection ) and then all the other switch lost
power or this switch lost connectivity to the LAN it was attached ( cable got eaten by rats ^-^ ),
what will happen ? The switch will assume the role of a root switch.
So I would say that would not satisfy the requirement of making sure the switch "never" become a
root switch.
Anyway, there was a long thread about this a few months ago, so I suggest the original poster to get
his hadn dirty and dig out the archive.. ;)
Larry Letterman
<lletterm@cisco.c To: Donny MATEO <donny.mateo@sg.ca-indosuez.com>
om> cc: Nathan Chessin <nchessin@cisco.com>, ccielab@groupstudy.com,
Sent by: nobody@groupstudy.com
nobody@groupstudy Subject: Re: Root Switch - Never
.com
13-11-2002 14:50
Please respond to
Larry Letterman
You can manually set things like path cost and bridge id values to
a value high enough that the bridge wont become the root...
Donny MATEO wrote:
>when the switch start, it will consider it self as the root of the spanning tree. Only after it has
>received superior bpdu from other switch will it consider the other switch as the root. My
>conclusion, the only way to make a switch not to be a root switch ever, is to disable spanning
>tree.
>
>Donny
>
>
>
> "Nathan Chessin"
> <nchessin@cisco.c To: <ccielab@groupstudy.com>
> om> cc:
> Sent by: Subject: Root Switch - Never
> nobody@groupstudy
> .com
>
>
> 13-11-2002 09:42
> Please respond to
> "Nathan Chessin"
>
>
>
>
>
>
>How do you stop a switch from becoming the root.
>
>bpdu-guard
>root-guard
>bpdu-filter
>
>Any help?
>
>
>Nate
>
>
>
>
>
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