From: Stefan L. Dozier (doziersl@yahoo.com)
Date: Sat Oct 19 2002 - 16:48:55 GMT-3
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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