Specifications

12-6
Catalyst 2970 Switch Software Configuration Guide
78-15462-03
Chapter 12 Configuring VTP
Configuring VTP
• Turn off VTP pruning by making all VLANs on the trunk of the switch upstream to the VTP
transparent switch pruning ineligible.
To configure VTP pruning on an interface, use the switchport trunk pruning vlan interface
configuration command (see the “Changing the Pruning-Eligible List” section on page 11-21). VTP
pruning operates when an interface is trunking. You can set VLAN pruning-eligibility, whether or not
VTP pruning is enabled for the VTP domain, whether or not any given VLAN exists, and whether or not
the interface is currently trunking.
Configuring VTP
This section includes guidelines and procedures for configuring VTP. These sections are included:
• Default VTP Configuration, page 12-6
• VTP Configuration Options, page 12-6
• VTP Configuration Guidelines, page 12-7
• Configuring a VTP Server, page 12-9
• Configuring a VTP Client, page 12-10
• Disabling VTP (VTP Transparent Mode), page 12-11
• Enabling VTP Version 2, page 12-12
• Enabling VTP Pruning, page 12-13
• Adding a VTP Client Switch to a VTP Domain, page 12-14
Default VTP Configuration
Table 12-2 shows the default VTP configuration.
VTP Configuration Options
You can configure VTP by using these configuration modes.
• VTP Configuration in Global Configuration Mode, page 12-7
• VTP Configuration in VLAN Database Configuration Mode, page 12-7
You access VLAN database configuration mode by entering the vlan database privileged EXEC
command.
Table 12-2 Default VTP Configuration
Feature Default Setting
VTP domain name Null.
VTP mode Server.
VTP version Version 1 (version 2 is disabled).
VTP password None.
VTP pruning Disabled.