Cisco 2950 - Catalyst Switch Configuration Manual page 409

Chapter 18 Configuring VTP
Beginning in privileged EXEC mode, follow these steps to verify and reset the VTP configuration
revision number on a switch before adding it to a VTP domain:
Command
Step 1 show vtp status
Step 2
configure terminal
Step 3 vtp domain domain-name
Step 4
end
Step 5
show vtp status
Step 6
configure terminal
Step 7 vtp domain domain-name
Step 8
end
Step 9
show vtp status
You can also change the VTP domain name by entering the vlan database privileged EXEC command
to enter VLAN configuration mode and by entering the vtp domain domain-name command. In this
mode, you must enter the exit command to update VLAN information and return to privileged EXEC
mode.
After resetting the configuration revision number, add the switch to the VTP domain.
Note You can use the vtp mode transparent global configuration command or the vtp transparent VLAN
configuration command to disable VTP on the switch, and then change its VLAN information without
affecting the other switches in the VTP domain.
78-11380-10
Purpose
Check the VTP configuration revision number.
If the number is 0, add the switch to the VTP domain.
If the number is greater than 0, follow these steps:
a. Write down the domain name.
b. Write down the configuration revision number.
c. Continue with the next steps to reset the configuration revision number on the
switch.
Enter global configuration mode.
Change the domain name from the original one displayed in Step 1 to a new name.
The VLAN information on the switch is updated and the configuration revision
number is reset to 0. You return to privileged EXEC mode.
Verify that the configuration revision number has been reset to 0.
Enter global configuration mode.
Enter the original domain name on the switch.
The VLAN information on the switch is updated, and you return to privileged EXEC
mode.
(Optional) Verify that the domain name is the same as in Step 1 and that the
configuration revision number is 0.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring VTP
18-15