Requirement:
- Configure IP addresses as given
- Configure discontigeous networks on router 1 and router 3 loopback 0.
- Run Rip version 1 on all routers
- Check if both Discontigeous networks are reachable from router 6. We will ping both networks and you will see results.
| Router 1 configuration R1(config)#interface Loopback0 R1(config-if)# ip address 200.100.100.1 255.255.255.128 R1(config)#interface FastEthernet0/0 R1(config-if)#ip address 1.1.1.1 255.255.255.252 R1(config-if)# no shutdown R1(config)#router rip R1(config-router)#version 1 R1(config-router)#network 1.0.0.0 R1(config-router)#network 200.100.100.0 Router 2 configuration R2(config)# interface FastEthernet0/0 R2(config-if)#ip address 1.1.1.2 255.255.255.252 R2(config-if)# no shutdown R2(config)# interface FastEthernet0/1 R2(config-if)#ip address 2.2.2.1 255.255.255.252 R2(config-if)#no shutdown R2(config)# interface FastEthernet1/0 R2(config-if)#ip address 3.3.3.1 255.255.255.252 R2(config-if)#speed 100 R2(config-if)#duplex full R2(config-if)#no shutdown R2(config)# router rip R2(config-router)#version 1 R2(config-router)#network 1.0.0.0 R2(config-router)#network 2.0.0.0 R2(config-router)#network 3.0.0.0 R1# show ip protocols | Router 3 configuration R3(config)#interface Loopback0 R1(config-if)# ip address 200.100.100.150 255.255.255.128 R3(config)#interface FastEthernet0/0 R3(config-if)# ip address 2.2.2.2 255.255.255.252 R3(config-if)#no shutdown R3(config)#router rip R3(config-router)#version 1 R3(config-router)#network 2.0.0.0 R3(config-router)#network 200.100.100.0 Router 6 configuration R6(config)#interface FastEthernet0/0 R6(config-if)#ip address 3.3.3.2 255.255.255.252 R6(config-if)# speed 100 R6(config-if)# full-duplex R6(config-if)#no shutdown R6(config)# ip route 0.0.0.0 0.0.0.0 3.3.3.1 |
R2# Show ip route
Here we ping from Router 6 to R1 and R3 loopback interfaces ip addresses ( which are discontigeous). Let see results. From undermentioned ping images, we have found that ping to 200.100.100.150 is successful but ping to 200.100.100.1 is unsuccessful.
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Here we have tried to find reason for different result of ping.
Ahaa !! Reason found.
In both cases, Router 2 is forwarding packets to 2.2.2.2 which is at fastethernet 0/1 by following routing table first entry and hence reach 200.100.100.150 but fail to reach 200.100.100.1.
Ahaa !! Reason found.
In both cases, Router 2 is forwarding packets to 2.2.2.2 which is at fastethernet 0/1 by following routing table first entry and hence reach 200.100.100.150 but fail to reach 200.100.100.1.
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