14-14
Catalyst 3750 Switch Software Configuration Guide
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Chapter 14 Configuring VTP
Configuring VTP
Beginning in privileged EXEC mode, follow these steps to enable VTP Version 2:
To disable VTP Version 2, use the no vtp version global configuration command.
Note You can also enable VTP Version 2 by using the vlan database privileged EXEC command to enter
VLAN database configuration mode and by entering the vtp v2-mode VLAN database configuration
command. To disable VTP Version 2, use the no vtp v2-mode VLAN database configuration command.
Enabling VTP Pruning
Pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic
must use to access the destination devices. You can only enable VTP pruning on a switch in VTP server
mode.
Beginning in privileged EXEC mode, follow these steps to enable VTP pruning in the VTP domain:
To disable VTP pruning, use the no vtp pruning global configuration command.
Note You can also enable VTP pruning by using the vlan database privileged EXEC command to enter VLAN
database configuration mode and entering the vtp pruning VLAN database configuration command. To
disable VTP pruning, use the no vtp pruning VLAN database configuration command. You can also
enable VTP Version 2 by using the vtp pruning privileged EXEC command.
Pruning is supported with VTP Version 1 and Version 2. If you enable pruning on the VTP server, it is
enabled for the entire VTP domain.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vtp version 2 Enable VTP Version 2 on the switch.
VTP Version 2 is disabled by default on VTP Version 2-capable switches.
Step 3
end Return to privileged EXEC mode.
Step 4
show vtp status In the VTP V2 Mode field of the display, verify that VTP Version 2 is enabled.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vtp pruning Enable pruning in the VTP administrative domain.
By default, pruning is disabled. You need to enable pruning on only one switch
in VTP server mode.
Step 3
end Return to privileged EXEC mode.
Step 4
show vtp status Verify your entries in the VTP Pruning Mode field of the display.
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