Hi, you can take the VTP server down and you will have no problem. On the VTP server you configure VLANs and VTP propagates the configured VLANs from the server to the clients. Without a VTP server all VLANs will work.
You can run a network without a VTP server. In this case you have to configure the VLANs on all switches manually. VTP (VLAN trunking protocol) does not handle trunking. The name is misleading. It is a management protocol running only on trunk ports of the switches. Nevertheless it is usefull to have two VTP servers instead of one for availability. VTP is not propageted via routers or Layer 3 switch ports. It is limited to a broadcast domain. With kind regards Jens Neelsen --- Ronnie Higginbotham wrote: > Once you take the VTP server down all vlans will basically go > down. Which > will bring down the network with only one VTP server. They > will sit there > and do nothing until the vtp server comes back online. It > would be a good > idea to have two VTP servers so you can take them down one at > a time and > upgrade. I must assume the 2 6509's or for you core routing > and the 4006's > are your closet access switches. > > If the other standby 6509 is a client in the same VTP domain > as you server > which I don't see why it would not be, they already that the > same VTP > revision all you have to do is promote the client 6509 to > server. > > set vtp domain (Domain Name) mode server > > Then you have two servers. You must have the 4006's dual ran > to both 6509's > to work... > > Ronnie > > ""Dave C."" wrote in message > news:[EMAIL PROTECTED] > > I have a question regarding VTP. > > > > I am working with a network configuration that has dual > 6509's as core > > switches. One is the VTP domain server, the other is a VTP > domain client. > > All other 4000 switches are defined as client also. > > > > I need to take both 6509's down to upgrade the Cat-OS on > them, however I > am > > concerned about what happens to the other switches when the > VTP domain > > server goes away while the other 6509 is in client mode. > > > > I know that I can assign multiple VTP servers to a domain. > My original > > thought is to first make sure that the client 6509 is > running the same VTP > > revision # as the server 6509. Then I should be able to > change the client > > 6509 to VTP server mode. Then in theory either server can > take over VTP > > responsibilites, because one will be able to act as the > other if the other > > one goes away. > > > > What I was also wondering, do all VLAN's go disabled if I > were to only > have > > a single VTP server and shut it down when the rest of the > switches are > > clients? If so, would this happen right away, or after 5 > minutes? If I > take > > the 6509 server down, it will not be able to tell anyone > that a topology > > change has occurred, but will the clients be looking for the > VTP 5 minute > > updates? > > > > If anyone could help clarify this, I would appreciate it. > > > > Thanks. > > > > Dave C. [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70997&t=70942 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
