RE: MSTP

Hello Happy,

Check out section 13.7 in the IEEE 802.1Q standard, which you can download
from the following link:

http://standards.ieee.org/getieee802/download/802.1Q-2005.pdf

It contains the quote:
"MST Bridges check that they are allocating VIDs to the same spanning trees
as their neighboring MST
Bridges in the same Region by transmitting and receiving MST Configuration
Identifiers along with the
spanning tree information."

As you will see in this document, the name and revision level must match as
part of the IEEE standard.

HTH,

Bob Sinclair CCIE 10427 CCSI 30427
CIERS2 Online Instructor
www.tinyurl.com/ciers2online

> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Happy Singh
> Sent: Thursday, September 23, 2010 9:39 AM
> To: Cisco certification; Cisco certification
> Subject: MSTP
>
> Hi
>
> As i read that following should match in MSTP configuration on all
> switches
> :
>
> 1) Vlan to instance mapping
> 2) Name
> 3) Revision # .
>
> I agree to fact that vlan to instance mapping shd be same for all
> switches
> to have a consistent view of topology .
>
> I do not get the meaning of other 2 parameters ( what is implied by
> these )
> and why these need to be same .
>
> Does matching all 3 items for all switches in MSTP domain .. specific
> to
> cisco or is this standard ( just thnking if this is Cisco's way of
> implementing MSTP )
>
> Please help
>
> Thnx
> Happy !
>
>
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Received on Thu Sep 23 2010 - 12:45:53 ART