From: Charles Church (cchurch@wamnet.com)
Date: Fri Sep 12 2003 - 10:52:39 GMT-3
Keep in mind that VTP will only travel over trunks, and use VLAN 1 whether
it's ISL or dot1q. Can the router bridge ISL or dot1q? Keep in mind that
all ISL and all non-default VLAN dot1q frames will be dropped by the router
if it's not expecting frames larger the 1518 bytes.
Chuck Church
CCIE #8776, MCNE, MCSE
Wam!Net Government Services
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
cchurch@wamnet.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?search=chuck+church&op=index
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
ccie2be
Sent: Friday, September 12, 2003 9:07 AM
To: Group Study
Subject: Re: VTP and bridged interfaces on routers
Hi Daniel,
Thanks for getting back to me. It was the document at that link that made
me wonder about whether VTP messages could transit bridged interfaces on a
router. Unfortunately, this document doesn't address that question and I
wasn't able to find any documents that say anything about this.
I wish I had the equipment to test this.
dt
----- Original Message -----
From: "Daniel Sheedy" <dansheedy@gmx.net>
To: <ccielab@groupstudy.com>
Cc: "ccie2be" <ccie2be@nyc.rr.com>
Sent: Friday, September 12, 2003 7:02 AM
Subject: Re: VTP and bridged interfaces on routers
> Hi dt,
>
> I found an interesting link here:
>
>
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080
094663.shtml
>
> It uses IRB to span a VLAN over a router, and seems to be fairly well
> explained. I looks like the similar setup to what you are trying to
> achieve.
> It even gives the config which is handy. Not too many commands are
needed,
> and nothing to tricky.
>
> Daniel Sheedy
>
>
> ----- Original Message -----
> From: "ccie2be" <ccie2be@nyc.rr.com>
> To: "Group Study" <ccielab@groupstudy.com>
> Sent: Thursday, September 11, 2003 10:59 PM
> Subject: VTP and bridged interfaces on routers
>
>
> > Hi all,
> >
> > I'm unable to test this so I'm posting this question.
> >
> > Assume the following:
> >
> > Switch1---trunk------fa0/0 router fa0/1----trunk----Switch2
> >
> > On the router the 2 fa interfaces are bridged together.
> >
> > Switch1 is a vtp server and Switch2 is a vtp client.
> >
> > Question? Will vtp messages get from Switch 1 to Switch 2 without any
> > special configuration on the router other than bridging the 2
fastethernet
> > interfaces together?
> >
> > If some configuration is needed on the router to make this work, what
> needs to
> > be done?
> >
> > Thanks in advance, dt
> >
> >
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