Managing VLANs in a VTP Enabled Network.
In the last few pages, we have learned how to manage VLANs in a VTP-enabled network. When a new VLAN, for example, VLAN 30, is added to the network, the network administrator adds the VLAN to the VTP server, switch SW1 in the diagram. For the record, the primary function of VTP is to propagate the VLAN configuration details to the rest of the switches in the network. It does not have any effect on which ports are configured in VLAN 30 on switches SW1, SW2, and SW3.
The following are the commands used to configure VLAN 10 and the port F0/18 on the server switch, SW1.
|
SW1#config t
SW1#(config)#vlan 30
SW1#(config-vlan)#name sales
SW1#(config-vlan)#exit
SW1#(config)#interface FastEthernet 0/18
SW1#(config-if)#switch access vlan 30
SW1#(config-if)#exist
SW1#(config)#exit
SW1# |
After you have configured the new VLAN on switch SW1 and configured the ports on switches SW1, SW2, and SW3 to support the new VLAN, use the command; show VTP status to confirm that VTP updated the VLAN database on switches SW2 and SW3.
Also you have to confirm that the new VLAN 30 had been added to Fa0/1 on switch SW2. Use the command, show interface trunk on switch SW2 to verify.
It will display something like this:
|
SW#show interface trunk
Port Mode Encapsulation Status Native vlan
Fa0/1 on 802.1q trunking 1
Port vlans allowed on trunk
Fa0/1 1-1005
Port vlans allowed and active in management domain
Fa0/1 1, 20,30, 1002, 1003, 1004, 1005
Port vlans in spanning tree forwarding state and not pruned
Fa0/1 1, 20,30, 1002, 1003, 1004, 1005
Back |
