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From: koh on 18 Mar 2010 05:10
Hi,

Can anyone tell me the reason for the following ?
There are 4 switches which is running spanning-tree (PVST).
I turned off spanning-tree for the root bridge,but nothing happened
except that another switch became root bridge.

thanks in advance

From: Jovan Yeo on 18 Mar 2010 10:04
On Mar 18, 5:10 pm, koh <kouich...(a)gmail.com> wrote:
> Hi,
>
> Can anyone tell me the reason for the following ?
> There are 4 switches which is running spanning-tree (PVST).
> I turned off spanning-tree for the root bridge,but nothing happened
> except that another switch became root bridge.
>
> thanks in advance

did u do a sh spanning tree?check yr configuration.
From: bod43 on 19 Mar 2010 00:51
On 18 Mar, 09:10, koh <kouich...(a)gmail.com> wrote:
> Hi,
>
> Can anyone tell me the reason for the following ?
> There are 4 switches which is running spanning-tree (PVST).
> I turned off spanning-tree for the root bridge,but nothing happened
> except that another switch became root bridge.
>
> thanks in advance

Well what would you like to happen? :-)

Depending on your network topology it is quite possible
that even with STP off on one or more switches that the
network will still operate correctly or even optimally.

If you post the topology (ASCII art or maybe a link to a
diagram somewhere) then maybe someone will come
up with some firm suggestions.

I forget whether with STP off cisco switch are transparent
to BPDUs or if they block them. Well I have never turned
STP off.
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