Propagating VLAN Information with VTP
How to configure a VTP management domain

Default VTP configuration values depend on the switch model and the software version. The default values for the Catalyst 2900, 4000 and 6000 series switches are as follows:

  • VTP domain name: None
  • VTP mode: Server
  • VTP password: None
  • VTP trap: Disabled (SNMP traps communicating VTP status)

The VTP domain name can be specified or learned from VTP updates seen from other switches. By default, the domain name is not set.

You can set a password for the VTP management domain. The password must be the same for all switches in the domain in order for the VLAN database to be synchronized between switches.

Steps to configure VTP on a switch
The steps to configure VTP will vary per design and switch mode, but the general steps to configuring a switch are as follows:

Step 1 Establish a design as to what switches will be servers, client or transparent and what the boundaries are for the VTP domain.
Step 2 Verify the current VLAN information on any switch that will be configured as server.
Step 3 Configure the switch mode.
Step 4 Specify the VTP domain name.
Step 5 Specify the version number, if other than default.
Step 6 Specify the VTP password (optional).
Step 7 Verify the configuration.
Step 8 Verify that updates are being sent from or received by the switch as intended.

To configure a switch to become part of a VTP domain, follow these steps from privileged EXEC mode.