RIPv1 (Rounting Information Protocol Version 1)

R1 Configuration !!!
R1>
R1>enable
R1#configure terminal
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip address 192.168.10.254 255.255.255.0
R1(config-if)#no shutdown

R1(config-if)#do write me
R1(config-if)#exit

R1(config)#interface fastEthernet 0/1
R1(config-if)#ip address 10.10.10.1 255.255.255.252
R1(config-if)#no shutdown
R1(config-if)#exit

R1(config)#router rip
R1(config-router)#network 192.168.10.0
R1(config-router)#network 10.10.10.0
R1(config-router)#do write me

R2 Configuration !!!

R2>
R2>enable
R2#configure terminal
R2(config)#interface fastEthernet 0/0
R2(config-if)#ip address 10.10.10.2 255.255.255.252
R2(config-if)#no shutdown
R2(config-if)#do write me
R2(config-if)#exit

R2(config)#interface fastEthernet 1/0
R2(config-if)#ip address 192.168.20.254 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#do write me
R2(config-if)#exit

R2(config)#interface fastEthernet 0/1
R2(config-if)#ip address 10.10.10.5 255.255.255.252
R2(config-if)#no shutdown
R2(config-if)#exit

R2(config)#router rip
R2(config-router)#network 10.10.10.0
R2(config-router)#network 192.168.20.0
R2(config-router)#network 10.10.10.4
R2(config-router)#do write me

R3 Configuration !!!

R3>enable
R3#configure terminal
R3(config)#interface fastEthernet 0/0
R3(config-if)#ip address 10.l0.10.6 255.255.255.252
R3(config-if)#no shutdown
R3(config-if)#exit

R3(config)#interface fastEthernet 0/1
R3(config-if)#ip address 192.168.30.254 255.255.255.252
R3(config-if)#no shutdown
R3(config-if)#do writ me
R3(config-if)#exit

R3(config)#router rip
R3(config-router)#network 10.10.10.4
R3(config-router)#network 192.168.30.0
R3(config-router)#do write me 

Comment!!!!
Thanks!!!!
Download : Router configuration