Re: how to disable VTP propogation over trunk link

On the contrary, run vtp in server mode with a different domain.
Some versions of transparent will let vtp go through, hence the name of
the mode. Or else, force v1 and use a different domain.

As for the initial question, vtp is a layer 2 protocol much like CDP.
I'm not aware of a way of filtering it. You can block it's destination
MAC but you'll filter CDP as well (01-00-0c-cc-cc-cc)
(Copied w/o permision from cisco-nsp list, google is your firend TM)

Just a different one, there is a way to filter specific packets on
content (flexible packet matching) on IOS, and it is available in some
switches (6k sup 32-PISA). I doubt this will fit you though.

-Carlos

Steve Di Bias @ 3/03/2010 3:43 -0300 dixit:
> Try running "vtp mode transparent"
> That will disable VTP on the switch
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_19_ea1/configuration/guide/swvtp.html#wp1035326
>
> -Steve Di Bias
>
>
> On Tue, Mar 2, 2010 at 9:28 PM, Nahskur Udniraht <
> expertinternetwork_at_gmail.com> wrote:
>
>> Dear All,
>>
>> can I use an access control mechanism to stop VTP messages over a trunk
>> link
>> ? is it possible to do so ?
>>
>> --
>> Nahskur Udniraht
>>
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net