14-13
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 14 Configuring VTP
Configuring VTP
transparent VLAN database configuration command to return the switch to VTP server mode. If
extended-range VLANs are configured on the switch, you cannot change VTP mode to server. You
receive an error message, and the configuration is not allowed.
Enabling VTP Version 2
VTP Version 2 is disabled by default on VTP Version 2-capable switches. When you enable VTP
Version 2 on a switch, every VTP Version 2-capable switch in the VTP domain enables Version 2. You
can only configure the version when the switches are in VTP server or transparent mode.
Caution VTP Version 1 and VTP Version 2 are not interoperable on switches in the same VTP domain. Every
switch in the VTP domain must use the same VTP version. Do not enable VTP Version 2 unless every
switch in the VTP domain supports Version 2.
Note In TrCRF and TrBRF Token ring environments, you must enable VTP Version 2 for Token Ring VLAN
switching to function properly. For Token Ring and Token Ring-Net media, VTP Version 2 must be
disabled.
For more information on VTP version configuration guidelines, see the “VTP Version” section on
page 14-9.
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.
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.
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