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Catalyst 2940 Switch Software Configuration Guide
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Chapter 14 Configuring VTP
Configuring VTP
To return the switch to VTP server mode, use the no vtp mode global configuration command.
Note You can also configure VTP transparent mode by using the vlan database privileged EXEC command
to enter VLAN configuration mode and by entering the vtp transparent command, similar to the second
procedure under the “Configuring a VTP Server” section on page 14-9. Use the no vtp transparent
VLAN configuration command to return the switch to VTP server mode.
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 on switches 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 14-8.
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.
Step 4
show vtp status Verify your entries in the VTP Operating Mode and the VTP Domain
Name fields of the display.
Step 5
copy running-config startup-config (Optional) Save the configuration in the startup configuration file.
Note Only VTP mode and domain name are saved in the switch running
configuration and can be copied to the startup configuration file.
Command Purpose
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 Verify that VTP version 2 is enabled in the VTP V2 Mode field of the display.