From: Fabrice Bobes (study@6colabs.com)
Date: Sat Oct 19 2002 - 18:54:29 GMT-3
This is correct, VTP is only carried over VLAN1. Obviously, you can't
disable VLAN1 from the trunk when using vtp.
Fabrice
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
enginedrive2002
Sent: Saturday, October 19, 2002 2:16 PM
To: ccielab@groupstudy.com
Subject: Re: VTP domain.
Thanks for the confirmation Fabrice and Stefan!
I have another question about VTP: which vlan is used to
transmit/receive VTP packets? I remember read from somewhere that it
only use vlan1, is this true?
Thanks!
E.D.
----- Original Message -----
From: "Stefan L. Dozier" <doziersl@yahoo.com>
To: "Fabrice Bobes" <study@6colabs.com>; <ccielab@groupstudy.com>
Sent: October 19, 2002 3:48 PM
Subject: RE: VTP domain.
> Ok...I've completed testing and I concur with your assessment and your
> answer, that "vtp domain <domain name> on a configured client is "not"
> a must!
>
> Given the situation, where the client switch is in a default vtp
> state, and it's vtp mode has been set to "client", you can connect him
> to a vtp server via a trunk link, and have him "inherit" the vtp
> server's domain name.
>
> Good catch...I didn't know that, but I do now :-)
>
> Thanks for testing and increasing my level of knowledge! I've always
> set the domain name manually as well as ensure the client was actually
> a vtp client, before connecting them to the network, less you'll
> possibly be struggling to bring your network back from death due to
> erasure of your vtp domain. :-)
>
> Stefan
>
>
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Fabrice Bobes
> Sent: Saturday, October 19, 2002 2:39 PM
> To: 'Stefan L. Dozier'; ccielab@groupstudy.com
> Subject: RE: VTP domain.
>
>
> Stefan,
>
> I can confirm that a vtp client in a default vtp state will get the
> vtp server's domain name via a trunk. I tried this on 2 of my
> Catalysts 3550 not later than yesterday. No, I wasn't bored.
>
> Thanks for the comments,
>
> Fabrice
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Stefan L. Dozier
> Sent: Saturday, October 19, 2002 11:07 AM
> To: ccielab@groupstudy.com
> Subject: RE: VTP domain.
>
>
> Comments Inline.....
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Fabrice Bobes
> Sent: Saturday, October 19, 2002 1:07 PM
> To: 'Stefan L. Dozier'; ccielab@groupstudy.com;
> enginedrive2002@yahoo.ca
> Subject: RE: VTP domain.
>
>
> OK, you can issue the "vtp domain" command on a switch in the client
> mode. But the switch will inherits the domain name via the trunk link.
>
> SLD> Maybe it will, I've never seen it happen, but I'll assume until
> I can test to be sure, that you're talking a switch with default
> vtp
> parameters, connected via trunk to a vtp server, and changed
> to a client, will pickup the vtp server's domain name.
> But if the client switch is not a default vtp state, i.e.
> vtp parameters have been previously configured, and you change
> the domain name on the server, that domain name will not
propogate
> via vtp to the client switch, but will result in a vtp mismatch
> as noted below.
>
> A vtp advertisement includes the VTP domain name.
>
> SLD> On this point, I stand corrected, the domain name is indeed
> included in the vtp advertisement. Which is why I'll entertain
> the possibility above, until I can test and prove otherwise!
>
>
> The initial question is: Is the command "vtp domain" a must on a vtp
> client? My answer is you don't need it but you can enter it. You will
> learn the vtp domain name via the trunk.
>
> SLD> I'll save the debate here, until I can complete testing...
>
> If you enter the vtp domain on a vtp client you add some kind of
> security since the vtp advertisements will be ignored if the vtp
> domain mismatch.
>
> SLD> Well, I wouldn't call it a security mechanism, although you're
> right about the vtp adverts in the case of a vtp mismatch.
>
>
> Stefan
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Stefan L. Dozier
> Sent: Saturday, October 19, 2002 9:22 AM
> To: enginedrive2002; ccielab@groupstudy.com
> Subject: RE: VTP domain.
>
>
> Yes!
>
> I don't know of any other way to tell the "vtp client" the domain name
> of your "vtp server" unless you issue the command "vtp domain <domain
> name> on the vtp client. It's not automagically transmitted via vtp
> advertisements if that's your line of thinking!
>
> caveat...
>
> "This assumes that you have 2 switches, one a vtp server and the other
> a vtp client, and you want both switches in the same vtp domain"
>
> HTH
>
> Stefan
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> enginedrive2002
> Sent: Saturday, October 19, 2002 11:43 AM
> To: ccielab@groupstudy.com
> Subject: VTP domain.
>
>
> Is the command "vtp domain <domain name>" a must on a VTP client when
> I already have VTP server configured?
>
> Thank you!
>
>
> E.D.
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