ROUTER1
Router>enable
Router#configure terminal
Enter configuration commands, one per
line. End with CNTL/Z.
Router(config)#interface fastEthernet
0/0
Router(config-if)#ip address 172.16.3.1
255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#interface serial 2/0
Router(config-if)#ip address 172.16.2.1
255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#exitRouter#configure terminal
Enter configuration commands, one per
line. End with CNTL/Z.
Router(config)#
Router(config)#ip route 172.16.0.0
255.255.252.0 s2/0
Router(config)#ip route 192.168.0.0
255.255.252.0 s2/0
Router(config)#exit
Router#show ip route
Codes: C - connected, S - static, I -
IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
S
172.16.0.0/22 is directly connected, Serial2/0
C
172.16.2.0/24 is directly connected, Serial2/0
C
172.16.3.0/24 is directly connected, FastEthernet0/0
S
192.168.0.0/22 is directly connected, Serial2/0
Router#
ROUTER 2
Router>enable
Router#configure terminal
Enter configuration commands, one per
line. End with CNTL/Z.
Router(config)#interface fastEthernet
0/0
Router(config-if)#ip address 172.16.1.1
255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#interface serial 2/0
Router(config-if)#ip address 172.16.2.2
255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#
Router(config)#interface serial 3/0
Router(config-if)#ip address 192.168.1.2
255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#
Router(config)#ip route 172.16.0.0
255.255.252.0 s2/0
Router(config)#ip route 192.168.0.0
255.255.252.0 s3/0
Router(config)#exit
Router#show ip route
Codes: C - connected, S - static, I -
IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
S
172.16.0.0/22 is directly connected, Serial2/0
C
172.16.1.0/24 is directly connected, FastEthernet0/0
C
172.16.2.0/24 is directly connected, Serial2/0
S
192.168.0.0/22 is directly connected, Serial3/0
C
192.168.1.0/24 is directly connected, Serial3/0
Router#
ROUTER 3
Router>enable
Router#configure terminal
Enter configuration commands, one per
line. End with CNTL/Z.
Router(config)#interface fastEthernet
0/0
Router(config-if)#ip address 192.168.2.1
255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#interface serial 3/0
Router(config-if)#ip address 192.168.1.1
255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#
Router(config)#exitRouter#configure terminal
Enter configuration commands, one per
line. End with CNTL/Z.
Router(config)#ip route 192.168.1.0
255.255.255.0 s3/0
Router(config)#ip route 172.16.0.0
255.255.252.0 s3/0
Router(config)#exit
Router#show ip route
Codes: C - connected, S - static, I -
IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/22 is subnetted, 1 subnets
S
172.16.0.0 is directly connected, Serial3/0
S
192.18.1.0/24 is directly connected, Serial3/0
C
192.168.1.0/24 is directly connected, Serial3/0
C
192.168.2.0/24 is directly connected, FastEthernet0/0
Router#