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. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70950&t=70942 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
