What is vtp trunking

One or more switches are assigned the role of VTP Server. A switch can be in only one domain. By default, Cisco switches do not have a VTP domain name assigned. When they receive a VTP advertisement over a trunk link, they inherit the domain name and the VTP revision number found in the message.

The name can be configured manually using the vtp name command. The other switches are VTP clients. The VTP configuration has a revision number which will increase when you make a change. Oh and by the way you can have multiple VTP servers since it also functions as a VTP client so you can make changes on multiple switches in your network. In order to make VTP work you need to setup a VTP domain name which is something you can just make up, as long as you configure it to be the same on all your switches.

Our VTP Transparent will forward advertisements but will not synchronize itself. Should you use VTP? The following situation can happen with VTP:. You have a network with a single VTP server and a couple of VTP client switches, everything is working fine but one day you want to test some stuff and decide to take one of the VTP clients out of the network and put it in a lab environment. What do you think the result will be? By default, all switches are configured to be VTP servers.

This configuration is suitable for small-scale networks in which the size of the VLAN information is small and the information is easily stored in all switches in NVRAM. In a large network, the network administrator must make a judgment call at some point, when the NVRAM storage that is necessary is wasteful because it is duplicated on every switch. At this point, the network administrator must choose a few well-equipped switches and keep them as VTP servers. Everything else that participates in VTP can be turned into a client.

The number of VTP servers should be chosen in order to provide the degree of redundancy that is desired in the network. Note: It is applicable only for CatOS.

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. 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. There are some disadvantages to the use of VTP. Dictionary Dictionary Term of the Day. Natural Language Processing. Techopedia Terms. Connect with us. Sign up. Term of the Day.