Configure VTP Server (Vlantrunking Protocol)

Configure VTP Server (Vlantrunking protocol)

We will first create a VTP Server so it can automatically propagate VLAN information to other switch. Double click on Switch1 and select CLI. Set hostname to S1 and create VTP domain name example and set password to vinita( Remember password is case sensitive ).

Switch 1

Switch>enable

Switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#hostname S1

S1(config)#vtp mode server

Device mode already VTP SERVER.

S1(config)#vtp domain example

Changing VTP domain name from NULL to example

S1(config)#vtp password vinita

Setting device VLAN database password to vinita

Configure VTP clients

Once you have created a VTP domain. Configure remaining Switch to Client mode.

Switch 2

Switch>enable

Switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#hostname S2

S2(config)#vtp mode client

Setting device to VTP CLIENT mode.

S2(config)#vtp domain example

Changing VTP domain name from NULL to example

S2(config)#vtp password vinita

Setting device VLAN database password to vinita

S2(config)#

Switch 3

Switch>enable

Switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#hostname S3

S3(config)#vtp mode client

Setting device to VTP CLIENT mode.

S3(config)#vtp domain example

Changing VTP domain name from NULL to example

S3(config)#vtp password vinita

Setting device VLAN database password to vinita

S3(config)#

Switch Configurations (Dynamic Trunking Protocol)

S1(config)#interface fastEthernet 0/24

S1(config-if)#switchport mode trunk

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24,

changed state to down

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24,

changed state to up

S1(config-if)#exit

S1(config)#interface gigabitEthernet 1/1

S1(config-if)#switchport mode trunk

S1(config-if)#exit

S1(config)#interface gigabitEthernet 1/2

S1(config-if)#switchport mode trunk

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/2,

changed state to down

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/2,

changed state to up

S1(config-if)#exit

S1(config)#

Then we would make the vlans on switches and change access modes to each vlan

At this point of configuration you have two successfully running VLAN but they will not connect each other. To make intra VLAN communications we need to configure router . To do this double click on router and select CLI.

Configure intra VLAN (Virtual LAN)

Router

Router>enable

Router#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#interface fastEthernet 0/0

Router(config-if)#no ip address

Router(config-if)#no shutdown

Router(config-if)#exit

Router(config)#interface fastEthernet 0/0.10

Router(config-subif)#encapsulation dot1Q 10

Router(config-subif)#ip address 10.0.0.1 255.0.0.0

Router(config-subif)#exit

Router(config)#interface fastEthernet 0/0.20

Router(config-subif)#encapsulation dot1Q 20

Router(config-subif)#ip address 20.0.0.1 255.0.0.0

Router(config-subif)#exit

Spanning-Tree Protocol

In this configuration STP will block these ports F0/24 of S1 , F0/23 and F0/24 of S2 and F0/24 of S3 to avoid loop at layer to two. Verify those ports blocked due to STP functions

Verify STP ports

Switch 2

S2#show spanning-tree active