Wednesday 21 September 2011

VLAN Trunking Protocol



Configure vtp server and client






PC configurations
Devices
IP Address
VLAN
Connected With
PC0
10.0.0.2
VLAN10
Switch1 on F0/1
PC1
20.0.0.2
VLAN20
Switch1 on F0/2
PC2
10.0.0.3
VLAN10
Switch2 on F0/1
PC3
20.0.0.3
VLAN20
Switch2 on F0/2
PC4
10.0.0.4
VLAN10
Switch3 on F0/1
PC5
20.0.0.4
VLAN20
Switch3 on F0/2

2960 – 24 TTL Switch 1 Configuration
Port Connected to
VLAN
LINK
STATUS
F0/1 With PC0
VLAN10
Access
OK
F0/2 With PC1
VLAN20
Access
OK
Gig1/1 With Router
VLAN 10,20
Trunk
OK
Gig 1/2 With Switch2
VLAN 10,20
Trunk
OK
F0/24 Witch Switch2
VLAN 10,20
Trunk
OK
2960 – 24 TTL Switch 2 Configuration
F0/1 With PC0
VLAN10
Access
OK
F0/2 With PC1
VLAN20
Access
OK
Gig 1/2 With Switch1
VLAN 10,20
Trunk
OK
Gig 1/1 With Switch3
VLAN 10,20
Trunk
OK
F0/24 Witch Switch1
VLAN 10,20
Trunk
Blocked
F0/23 Witch Switch3
VLAN 10,20
Trunk
OK
2960 – 24 TTL Switch 3 Configuration
F0/1 With PC0
VLAN10
Access
OK
F0/2 With PC1
VLAN20
Access
OK
Gig 1/1 With Switch2
VLAN 10,20
Trunk
OK
F0/24 Witch Switch1
VLAN 10,20
Trunk
Blocked

Configure VTP Server 
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 cisco and set password to cisco123 ( 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 cisco
Changing VTP domain name from NULL to cisco
S1(config)#vtp password cisco123
Setting device VLAN database password to cisco123

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 cisco
Changing VTP domain name from NULL to cisco
S2(config)#vtp password cisco123
Setting device VLAN database password to cisco123
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 cisco
Changing VTP domain name from NULL to cisco
S3(config)#vtp password cisco123
Setting device VLAN database password to cisco123
S3(config)#