How to configure Vlan Trunking Protocol on Gns3
Question
This
GNS3 lab is related to VLAN Trunk Protocol, in which you have two switches
Switch-1 and Switch-2 and you need to configure the Switch-2 according to
following requirement:
- Determine and configure the gateway and last IP address on vlan-interface from subnet 192.168.33.32\27
- Find and configure the same VTP domain on switch-2 as on Switch-1. (Switch-1 has the domain “City-Campus”)
- Configure Switch-2 as VTP Client
Solution: how
to configure this Lab:
You can configure this on
GNS3 very easily, according to question Router and Switch-1 are already
configured. You can complete this lab by creating the above topology in GNS3
and then you can download router and switch-1configurations from here, paste
them on router and switch-1 respectively and complete it with following
configurations:
GNS3
version: 0.8
Determine and configure the gateway and last IP address from subnet 192.168.33.32\27:
For finding the gateway and vlan IP address on Switch-1 you can use the command “show
run”
Switch-1#show
running-config
From above out-put you can
see that vlan-subnet on switch-1 is 192.168.33.50\27 and from subnetting you
can find the valid IP addresses for this subnet:
Subnetting for
Class C address
|
|||||||||
Bit# in 4th octet
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
|
IP ranges/ increment
|
128
|
64
|
32
|
16
|
8
|
4
|
2
|
1
|
From above table we have the following details:
Subnet ID= 192.168.33.32
Broadcast Address=192.168.33.63
Valid IPs= 192.168.33.33 to 192.168.33.62
So we have 192.168.33.62 the last IP address for given
subnet.
Switch-2#config t
Switch-2(config)#int Vlan1
Switch-2(config-if)#ip address 192.168.22.62 255.255.255.224
Switch-2(config-if)#no shut
Switch-2(config-if)#ip address 192.168.22.62 255.255.255.224
Switch-2(config-if)#no shut
Switch-2(config-if)#exit
Switch-2(config)#ip default-gateway 192.168.22.35
Switch-2(config)#ip default-gateway 192.168.22.35
Find and configure the same VTP domain on switch-2
For VTP domain of switch-1, you can use the “show
vtp status” command on Switch-1.
switch-1# show vtp status
We have find that VTP-domain of switch-1 is “City-Campus”.
For configuring the same domain you can use the following commands:
Switch-2#config t
Switch-2(config)#vtp domain City-Campus
Configure Switch-2 as VTP Client
You can set Switch02 as VTP client by using command: “vtp
mode client” or "vtp client"
Real
Switch Configurations
|
if you
are configuring it on GNS3
|
Switch-2#config t
Switch-2(config)#vtp mode
client
Switch-2(config)#vtp domain City-Campu
|
Switch2#vlan database
Switch2(vlan)#vtp client
Switch2(vlan)#vtp domain City-Campus
|
How to Test or Confirm lab configurations on GNs3:
Create some vlan on switch1, if your configurations are complete then it
will automatically create that vlan on Switch2 as well. (Switch2 is VTP client therefore
it will sync its vlan database from switch1 which is VTP server)
Switch1#vlan database
Switch1(vlan)#vlan 11
After creating vlan 11 on switch1, Show vlan-switch on
switch2 should have following configurations:
If you have some issue with your lab then you can download Switch2 configuration from here and can compare with your for troubleshooting.
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