Cisco WS-C3550-12G Software Configuration Manual page 246

Using the VLAN Trunking Protocol
Configuring a VTP Server
When a switch is in VTP server mode, you can change the VLAN configuration and have it propagated
throughout the network.
Beginning in privileged EXEC mode, follow these steps to configure the switch as a VTP server:
Command
Step 1
vlan database
Step 2 vtp server
Step 3
vtp domain domain-name
Step 4
vtp password password-value
Step 5
exit
Step 6 show vtp status
When you configure a domain name, it cannot be removed; you can only reassign a switch to a different
domain.
To return the switch to a no-password state, use the no vtp password VLAN configuration command.
This example shows how to configure the switch as a VTP server with the domain name eng_group and
verify the configuration:
Switch# vlan database
Switch(vlan)# vtp domain eng_group
Switch(vlan)# exit
APPLY completed.
Exiting....
Switch# show vtp status
VTP Version
Configuration Revision
Maximum VLANs supported locally : 1005
Number of existing VLANs
VTP Operating Mode
VTP Domain Name
VTP Pruning Mode
VTP V2 Mode
VTP Traps Generation
MD5 digest
Configuration last modified by 172.20.135.204 at 3-1-93 00:05:51
Local updater ID is 172.20.135.202 on interface Vl1 (lowest numbered VLAN interface found)
Catalyst 3550 Multilayer Switch Software Configuration Guide
9-10
Purpose
Enter VLAN configuration mode.
Configure the switch for VTP server mode (the default).
Configure a VTP administrative-domain name.
The name can be from 1 to 32 characters.
All switches operating in VTP server or client mode under the same
administrative responsibility must be configured with the same domain name.
(Optional) Set a password for the VTP domain. The password can be from 8
to 64 characters.
If you configure a VTP password, the VTP domain does not function properly
if you do not assign the same password to each switch in the domain.
Update the VLAN database, propagate it throughout the administrative
domain, and return to privileged EXEC mode.
Verify your entries in the VTP Operating Mode and the VTP Domain Name
fields of the display.
: 2
: 211
: 8
: Server
: eng_group
: Disabled
: Disabled
: Disabled
: 0x31 0xB3 0xCD 0xEF 0x34 0xD2 0x44 0xAD
Chapter 9 Creating and Maintaining VLANs
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