From: Ali Mousawi (mousawi.ali@gmail.com)
Date: Mon Oct 06 2008 - 20:49:12 ART
Hey,
I believe there was a task with some similar requirement and to overcome the
issue you creat QinQ tunnel so Sw1 will thinks its directly connected to Sw3
and VTP updates will be passed then.
On Mon, Oct 6, 2008 at 4:19 PM, Scott M Vermillion <
scott_ccie_list@it-ag.com> wrote:
> Hi Omkar,
>
> Regardless of what the documentation tells us, my experience was that
> either
> a Ver 1 or Ver 2 switch in transparent mode will forward advertisements if
> and only if:
>
> 1. The VTP domain names match
> 2. The transparent switch has a null VTP domain name
>
> I checked my IEWB Vol I notes from the switching section and I apparently
> was grousing about this very same subject a little over a year ago. Ran a
> series of experiments with various things in Ver 1 and Ver 2, with and
> without matching domain names, with null domain names, etc. Pretty much
> arrived at the same conclusion as you. And I believe this does come up
> here
> on the list fairly often and the outcome is ultimately identical to what
> you've discovered.
>
> Sometimes the documentation is not very clear. Sometimes the documentation
> is just plain wrong.
>
> Regards,
>
> Scott
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Omkar Tambalkar
> Sent: Monday, October 06, 2008 3:02 PM
> To: Cisco certification
> Subject: VTP question
>
> I apologize if this has been repeated.
>
> Practical Studies: Switching mentions that if a switch is running vtp
> version 2 and is transparent then it will forward VTP advertisements
> received on its trunk ports even if the VTP domain does not match.
> I tested this and it did not work. Then I thought that it might have to do
> with having to auto-negotiate the trunk links because DTP was complaining
> about the domain mismatch so I forced the links to be trunks and disabled
> negotiation but still the VTP messages were not forwarded by the
> transparent
> switch with different VTP domain.
>
> -Later
> Omkar
>
>
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