Re: Question about STP

Hi Naufal,

I would do something like hop onto one of your IOS based switches and use a
command like "sh spanning-tree | inc VLAN|Root ID|Bridge ID|Address"

Cat2#sh spanning-tree | inc VLAN|Root ID|Bridge ID|Address
VLAN0001
  Root ID Priority 28673
             Address 001a.6ccc.7380
  Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
             Address 001a.e365.a080
VLAN0010
  Root ID Priority 10
             Address 001a.e365.a080
  Bridge ID Priority 10 (priority 0 sys-id-ext 10)
             Address 001a.e365.a080
VLAN0020
  Root ID Priority 4116
             Address 001a.6ccc.7380
  Bridge ID Priority 32788 (priority 32768 sys-id-ext 20)
             Address 001a.e365.a080

Then just telnet into all the other switches CatOS/IOS and look at what
their bridge IDs are, and you can associate the Root ID with the particular
switch

Cheers,
Adam

On Thu, Aug 19, 2010 at 9:32 AM, Naufal Jamal <naufalccie_at_yahoo.in> wrote:

> Hi Guys,
>
> I have a set of 15 switches which are acting as layer 2. I have more than
> 80-90 vlans across these switches and I need to know for which vlans which
> switch is the root bridge. what could be the easiest way for doing so
> instead
> of doing sh spanning tree vlan <> in every switch for each vlan? most of
> them
> are using cat OS. Any idea??
>
>
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Received on Thu Aug 19 2010 - 13:49:51 ART