VTP server mode (Cisco)

Technology: Switching
Area: VLANs
Vendor: Cisco
Software: 12.X , 15.X
Platform: Catalyst platforms

VTP servers advertise their VLAN configurations to other switches in the same VTP domain and synchronize their VLAN configurations with other switches based on advertisements received over trunk links. VTP server is the default mode. Server mode on switch is typically configured when decided to manage (add, remove, name) VLANs from one place (this switch). The  rest of switches work then in Client mode.

To configure switch to work as VTP server mode:

switch# configure terminal
switch(config)#vtp domain Grandmetriclabs.com
switch(config)#vtp password cisco
switch(config)#vtp mode server
switch(config)#end

To verify the VTP mode use:

switch#show vtp status
VTP Version : 1
Configuration Revision : 0
Maximum VLANs supported locally : 1005
VTP Operating Mode : Server
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
switch#

Check how to configure VTP client mode on Cisco switch.