How to configure VLAN Trunking Protocol (VTP)

Refer the simple switching lab setup shown below. We have already created VLAN 10 and VLAN 20 in Switch 1. Click the following links to learn how to create and name VLAN and what is VLAN Trunking Protocol

Here we are going to configure Switch 1 as VTP server and Switch 2 as VTP client.

VLAN trunking Protocol configuration

Open a console connection to Switch 1 and enter the following IOS commands from global configuration mode to configure VLAN Trunking Protocol (VTP) in Switch 1. Here we configure the VTP domain as 'omnisecu.com', VTP mode as 'Server' and VTP password as 'omnisecupass'.

omnisecu.com.sw01>enable
omnisecu.com.sw01#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
omnisecu.com.sw01(config)#vtp domain omnisecu.com
Changing VTP domain name from NULL to omnisecu.com
omnisecu.com.sw01(config)#vtp mode server
Device mode already VTP SERVER.
omnisecu.com.sw01(config)#vtp password omnisecupass
Setting device VLAN database password to omnisecupass
omnisecu.com.sw01(config)#exit
omnisecu.com.sw01#

Open a console connection to Switch 2 and enter the following IOS commands from global configuration mode to configure VLAN Trunking Protocol (VTP) in Switch 2. Here we configure the VTP domain as 'omnisecu.com', VTP mode as 'Client' and VTP password as 'omnisecupass'.

omnisecu.com.sw02>enable
omnisecu.com.sw02#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
omnisecu.com.sw02(config)#vtp domain omnisecu.com
Domain name already set to omnisecu.com.
omnisecu.com.sw02(config)#vtp mode client
Setting device to VTP CLIENT mode.
omnisecu.com.sw02(config)#vtp password omnisecupass
Setting device VLAN database password to omnisecupass
omnisecu.com.sw02(config)#exit
omnisecu.com.sw02#

Once the VLAN Trunking Protocol (VTP) is configured on Switch 2, run the 'show vlan' command from privileged mode on Switch 2 to make sure that the VLAN configuration information is propagated from Switch 1 to Switch 2.

omnisecu.com.sw02#show vlan

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23
10 engineering active
20 planning active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
10 enet 100010 1500 - - - - - 0 0
20 enet 100020 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------