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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter14 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
Step1 configure terminal Enter global configuration mode.
Step2 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.
Step3 end Return to privileged EXEC mode.
Step4 show vtp password Verify your entries.
Step5 copy running-config startup-config (Optional) Save the configuration in the startup configuration file.
Command Purpose
Step1 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.