Cisco WS-C2980G-A Software Guide - Page 199
Changing VTP Version 3 Modes
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Chapter 9 Configuring VTP Configuring VTP Version 3 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 : running VTP3 Domain Name : ENG Password : not configured Notifications: disabled Switch ID : 00d0.004c.1800 Feature Mode Revision Primary ID Primary Description VLAN Server 0 0000.0000.0000 UNKNOWN Transparent Pruning : disabled VLANs prune eligible: 2-1000 Console> (enable) Changing VTP Version 3 Modes Note For additional details, see the "VTP Version 3 Modes" section on page 9-18. 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. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-23
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