Changing Vtp Version 3 Modes - Cisco WS-C2948G-GE-TX Configuration Manual

Chapter 9 Configuring VTP
This example shows how to enable VTP version 3 and verify the configuration:
Console> (enable) set vtp version 3
VTP version 3 cannot be enabled on a switch with No Domain.
Console> (enable) set vtp domain ENG
VTP domain ENG modified
Console> (enable) set vtp version 3
VTP version 3 Server/Client for VLANDB requires Reduced Mac Address feature to
be enabled (use "set spantree macreduction enable" command)
Console> (enable) set spantree macreduction enable
MAC address reduction enabled
Console> (enable) set vtp version 3
This command will enable VTP version 3 on this switch.
Do you want to continue (y/n) [n]? y
VTP3 domain ENG modified
Console> (enable) sh vtp domain
Version
Domain Name
Notifications: disabled
Feature
-------------- -------------- ----------- -------------- ----------------------
VLAN
UNKNOWN
Pruning
VLANs prune eligible: 2-1000
Console> (enable)

Changing VTP Version 3 Modes

For more information on the modes in VTP version 3, see the
Note
page
Each database is propagated by an instance of the VTP protocol. As these instances are independent, they
can operate in different modes. The set vtp mode command allows you to set the mode for a particular
VTP instance. The VTP instance is identified by the name of the feature to which it applies. The set vtp
mode command has been extended to include a feature that you specify to identify the database to which
the command applies. 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 the set vtp mode transparent unknown command, the packets for the unknown
features are flooded through the switch. If you enter the set vtp mode off unknown command, the packets
are dropped. The unknown feature can only be configured with off or transparent modes. The default
mode is off for all databases. The mode of the VLAN database is preserved when VTP versions are
changed.
Note In software release 8.1(1), the only supported database propagation is for the VLAN database; therefore,
there are no unknown databases.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
: running VTP3
: ENG
Mode
Server
Transparent
: disabled
9-18.
Password
Switch ID : 00d0.004c.1800
Revision Primary ID
0 0000.0000.0000
Configuring VTP Version 3
: not configured
Primary Description
"VTP Version 3 Modes" section on
9-23