Unanswered Question
Iain Thu, 04/19/2007 - 12:34

Isn't this something that you have to configure manually in the VTP client settings? (Domain name, Password, etc)

Otherwise the new switch will stay in VTP transparent mode which is default.

There are three VTP modes: Transparent, Client, Server. In order to join a VTP domain you need to configure the client mode settings.

haroon.shaikh Thu, 04/19/2007 - 12:43

By default, all switches are configured to be VTP servers.

* If a switch is configured as a VTP server without a VTP domain name, you cannot configure a VLAN on the switch.

* If a new Catalyst is attached in the border of two VTP domains, the new Catalyst keeps the domain name of the first switch that sends it a summary advertisement. The only way to attach this switch to another VTP domain is to manually set a different VTP domain name.

* Dynamic Trunking Protocol (DTP) sends the VTP domain name in a DTP packet. Therefore, if you have two ends of a link that belong to different VTP domains, the trunk does not come up if you use DTP. In this special case, you must configure the trunk mode as on or nonegotiate, on both sides, in order to allow the trunk to come up without DTP negotiation agreement.

* If the domain has a single VTP server and it crashes, the best and easiest way to restore the operation is to change any of the VTP clients in that domain to a VTP server. The configuration revision is still the same in the rest of the clients, even if the server crashes. Therefore, VTP works properly in the domain.

For more details check out:


* Please rate this post if it is helpful, as it encourages other users to take part in forums.


This Discussion