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14-6
Catalyst 2940 Switch Software Configuration Guide
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Chapter 14 Configuring VTP
Configuring VTP
VTP pruning is not designed to function in VTP transparent mode. If one or more switches in the
network are in VTP transparent mode, you should do one of these:
• Turn off VTP pruning in the entire network.
• 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 13-17). 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 14-6
• VTP Configuration Options, page 14-7
• VTP Configuration Guidelines, page 14-8
• Configuring a VTP Server, page 14-9
• Configuring a VTP Client, page 14-10
• Disabling VTP (VTP Transparent Mode), page 14-11
• Enabling VTP Version 2, page 14-12
• Enabling VTP Pruning, page 14-13
• Adding a VTP Client Switch to a VTP Domain, page 14-13
Default VTP Configuration
Table 14-2 shows the default VTP configuration.
Table 14-2 Default VTP Configuration
Feature Default Setting
VTP domain name Null
VTP mode Server
VTP version 2 enable state Version 2 is disabled
VTP password None
VTP pruning Disabled