Lesson No.16 Configure the routers in the given topology using VLSM and RIP version2.

Description: VLSM is the process of subnetting a subnet and using different subnet masks for different networks in our IP plan. We need to make sure that there is no overlap in any of the addresses. Router 0 has 20 users, router 1 has 30 users and router 2 has 60 users. As it is VLSM, ip addresses should be given according to the no. of users i.e. higher the users lower is the network id. After configuring routers and PCs, RIP version 2 will be applied.

Solution: The given topology is:

Steps:

Configuring steps for router0:

Router0>enable

Router0#config terminal

Router0(config)#interface fa0/0

Router0(config-if)#ip address 192.168.10.98 255.255.255.224

Router0(config-if)#no shutdown

Router0(config-if)#exit

Router0(config)#interface se2/0

Router0(config-if)#ip address 192.168.10.129 255.255.255.252

Router0(config-if)#no shutdown

Router0(config-if)#clock rate 64000

Router0(config-if)#exit

Router0(config)#interface se3/0

Router0(config-if)#ip address 192.168.10.137 255.255.255.252

Router0(config-if)#no shutdown

Router0(config-if)#exit

Router0(config-if)#router rip

Router0(config-router)#version 2

Router0(config-router)#network 192.168.10.136

Router0(config-router)#network 192.168.10.128

Router0(config-router)#network 192.168.10.96

Router0(config-router)#exit

Configuring steps for router1:

Router1>enable

Router1#config terminal

Router1(config)#interface fa0/0

Router1(config-if)#ip address 192.168.10.66 255.255.255.224

Router1(config-if)#no shutdown

Router1(config-if)#exit

Router1(config)#interface se2/0

Router1(config-if)#ip address 192.168.10.130 255.255.255.252

Router1(config-if)#no shutdown

Router1(config-if)#exit

Router1(config)#interface se3/0

Router1(config-if)#ip address 192.168.10.133 255.255.255.252

Router1(config-if)#no shutdown

Router1(config-if)#clock rate 64000

Router1(config-if)#exit

Router1(config-if)#router rip

Router1(config-router)#version 2

Router1(config-router)#network 192.168.10.128

Router1(config-router)#network 192.168.10.64

Router1(config-router)#network 192.168.10.132

Router1(config-router)#exit

Configuring steps for router2:

Router2>enable

Router2#config terminal

Router2(config)#interface fa0/0

Router2(config-if)#ip address 192.168.10.2 255.255.255.192

Router2(config-if)#no shutdown

Router2(config-if)#exit

Router2(config)#interface se2/0

Router2(config-if)#ip address 192.168.10.138 255.255.255.192

Router2(config-if)#no shutdown

Router2(config-if)#clock rate 64000

Router2(config-if)#exit

Router2(config)#interface se3/0

Router2(config-if)#ip address 192.168.10.134 255.255.255.192

Router2(config-if)#no shutdown

Router2(config-if)#exit

Router2(config-if)#router rip

Router2(config-router)#version 2

Router2(config-router)#network 192.168.10.136

Router2(config-router)#network 192.168.10.132

Router2(config-router)#network 192.168.10.0

Router2(config-router)#exit

Configuring steps for PC0:

Ip address: 192.168.10.65

Subnet mask: 255.255.255.224

Default gateway: 192.168.10.66

Configuring steps for PC1:

Ip address: 192.168.10.94

Subnet mask: 255.255.255.224

Default gateway: 192.168.10.66

Configuring steps for PC2:

Ip address: 192.168.10.62

Subnet mask: 255.255.255.224

Default gateway: 192.168.10.2

Configuring steps for PC3:

Ip address: 192.168.10.1

Subnet mask: 255.255.255.192

Default gateway: 192.168.10.2

Configuring steps for PC4:

Ip address: 192.168.10.97

Subnet mask: 255.255.255.224

Default gateway: 192.168.10.98

Configuring steps for PC6:

Ip address: 192.168.10.126

Subnet mask: 255.255.255.224

Default gateway: 192.168.10.98

Output:

Ping command from PC1 to PC6