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Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 14 Configuring VTP
Configuring VTP
Configuring a VTP Version 3 Password
Beginning in privileged EXEC mode, follow these steps to configure the password when using VTP
version 3:
To clear the password, enter the no vtp password global configuration command.
This example shows how to configure a hidden password and how it appears.
Switch(config)# vtp password mypassword hidden
Generating the secret associated to the password.
Switch(config)# end
Switch# show vtp password
VTP password: 89914640C8D90868B6A0D8103847A733
Configuring a VTP Version 3 Primary Server
Beginning in privileged EXEC mode, follow these steps on a VTP server to configure it as a VTP
primary server (version 3 only), which starts a takeover operation:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vtp password password [hidden |
secret]
(Optional) Set the password for the VTP domain. The password can be 8 to
64 characters.
• (Optional) hidden—Enter hidden to ensure that the secret key
generated from the password string is saved in the nvam:vlan.dat file.
If you configure a takeover by configuring a VTP primary server, you
are prompted to reenter the password.
• (Optional) secret—Enter secret to directly configure the password.
The secret password must contain 32 hexadecimal characters.
Step 3
end Return to privileged EXEC mode.
Step 4
show vtp password Verify your entries.
Step 5
copy running-config startup-config (Optional) Save the configuration in the startup configuration file.
Command Purpose
Step 1
vtp primary-server [vlan | mst]
[force]
Change the operational state of a switch from a secondary server (the
default) to a primary server and advertise the configuration to the domain.
If the switch password is configured as hidden, you are prompted to reenter
the password.
• (Optional) vlan—Select the VLAN database as the takeover feature.
This is the default.
• (Optional) mst—Select the multiple spanning tree (MST) database as
the takeover feature.
• (Optional) force—Entering force overwrites the configuration of any
conflicting servers. If you do not enter force, you are prompted for
confirmation before the takeover.