Re: Question about STP

Naufal,

Although I can't think of any magic command but you can make use of some
simple scripts or network management tools like Ciscoworks to facilitate the
process.

Kambiz Agahian

CCIE Instructor/Consultant
M.Eng Telecom, CCIE# 25341, CCSI# 33326, MCSE, MCSA

On Wed, Aug 18, 2010 at 8:49 PM, Adam Booth <adam.booth_at_gmail.com> wrote:

> 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??
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Aug 18 2010 - 21:55:31 ART