From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Mon Mar 13 2006 - 13:47:16 GMT-3
I'll summarize my understanding.
So noneogiate means the port will not engage in DTP negotiation. Looking at
VTP in isolation, it seems you are asking how to stop a trunk port on a
switch from passing (either self originated or relay) VTP packets.
VTP transparent will take care of the self originated side, but it will
still pass VTP packets as a relay.
VTP packets are sent to destination address 01-00-0C-CC-CC-CC so one option
would be to filter those packets out. I guess it's possible something like
that could be asked for in the lab, but I'd be surprised if filtering on
destination MAC like this is what they are asking for, so I guess it would
be one for the proctor if you face it.
Chris
On 3/13/06, Schulz, Dave <DSchulz@dpsciences.com> wrote:
>
> Thanks, Chris. So, if the question was to refer to trunk ports.and
> insure that there is no DTP and VTP information exchanged.would it be
> correct to both select vtp mode transparent and switchport nonnegotiate (on
> both sides.since they will only respond, but not send vtp messages)?
>
>
>
>
>
> Dave Schulz,
>
> Email: dschulz@dpsciences.com <dschulz@dpsciences.com%20>
>
>
> ------------------------------
>
> *From:* Chris Lewis [mailto:chrlewiscsco@gmail.com]
> *Sent:* Monday, March 13, 2006 9:42 AM
> *To:* Schulz, Dave
> *Cc:* jnkmail4eva@yahoo.com; ccielab@groupstudy.com
> *Subject:* Re:
>
>
>
> Well, it comes down to the wording somewhat I think. The following is
> quoted from the latest 3550 documentation.
>
>
>
> "Version-Dependent Transparent ModeIn VTP version 1, a VTP transparent
> switch inspects VTP messages for the domain name and version and forwards a
> message only if the version and domain name match. Because VTP version 2
> supports only one domain, it forwards VTP messages in transparent mode
> without inspecting the version and domain name."
>
>
>
> So even in transparent mode, the switch will act as a relay for VTP
> messages. It really comes down to if you want to stop the switch processing
> any VTP messages, transparent will do the job, however if you want to stop
> any VTP messages traversing the specified ports, access mode would appear
to
> ensure that.
>
>
>
> Chris
>
>
>
> On 3/13/06, *Schulz, Dave* <DSchulz@dpsciences.com> wrote:
>
> You will also need to set the vtp mode to transparent (to not send out
> vtp)
>
>
> Dave Schulz,
> Email: dschulz@dpsciences.com
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto: nobody@groupstudy.com] On Behalf Of
> jnkmail4eva@yahoo.com
> Sent: Saturday, March 11, 2006 11:08 PM
> To: ccielab@groupstudy.com
> Subject:
>
> I am currently concentrating on Switch features .. specifically trunking
> features.
> I came across a question where I am suppose to block vtp and dtp on
> ports f0/5 to f/10.
>
> Can someone vaildate my solution :
>
> interface range f0/5 - 10
> switchport mode access
> switchport nonegotiate
>
> This should block both dtp and vtp traffic on ports f0/5 - f/10.
> Any help/guidance is greatly appreciated.
>
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