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Catalyst 6500 Series Switch Command Reference—Release8.4
OL-6244-01
Chapter2 Catalyst 6500 Series Switch and ROM Monitor Commands set vtp
•The unknown keyword allows you to configure the behavior of the switch databases that it cannot
interpret. (These databases will be features handled by future extensions of VTP version 3). If you
enter set vtp mode transparent unknown, packets for unknown features are flooded through the
switch. If you enter set vtp mode off unknown, packets are dropped.
•VTP version 3 is a local configuration for the switch. Pruning does not propagate throughout the
domain but only the local switch.
•MST mapping is propagated only if the switch is running VTP version 3 in software release 8.3(1).
If the switch is running VTP version 3 without the MST feature and receives an MST database, it
takes action based on the unknown database mode. If the unknown database mo de is transparent, the
switch relays the VTP version 3 packet that carries the MST database. If the unknown database mode
is off, the switch drops the packet.
Note A switch running VTP version 1 or version 2 ignores the MST database that is sent by the
VTP version 3 switch in the network.
Note A switch can commit any new MST mapping only if it is a primary server for the MST feature.
Examples This example shows how to set the VTP domain name:
Console> (enable) set vtp domain Lab_Network
VTP domain Lab_Network modified
Console> (enable)
This example shows how to set the VTP mode to server mode:
Console> (enable) set vtp mode server
Changing VTP mode for all features
VTP3 domain Lab_Network modified
Console> (enable)
This example shows what happens if you try to change VTP to server or client mode and dynamic VLAN
creation is enabled:
Console> (enable) set vtp mode server
Failed to Set VTP to Server. Please disable Dynamic VLAN Creation First.
Console> (enable)
This example shows how to set VTP to off mode:
Console> (enable) set vtp mode off
VTP domain modified
Console> (enable)
This example shows how to set the VTP password:
Console> (enable) set vtp passwd Sa7r12ah
Generating the secret associated to the password.
VTP domain pubs modified
Console> (enable)