Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no ip do lo
Router(config)#lin con 0
Router(config-line)#exec-ti 0 0
Router(config-line)#logg sy
Router(config-line)#exit
Router(config)#host R1
R1(config)#
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no ip do lo
Router(config)#lin con 0
Router(config-line)#exec-ti 0 0
Router(config-line)#logg sy
Router(config-line)#exit
Router(config)#host R2
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no ip do lo
Router(config)#lin con 0
Router(config-line)#exec-ti 0 0
Router(config-line)#logg sy
Router(config-line)#exit
Router(config)#host R3
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no ip do lo
Router(config)#lin con 0
Router(config-line)#exec-ti 0 0
Router(config-line)#logg sy
Router(config-line)#exit
Router(config)#host R4
R1(config-if)#ip add 192.168.1.1 255.255.255.252
R1(config-if)#no sh
R1(config-if)#int lo 0
R1(config-if)#ip add
R1(config-if)#int lo 1
R1(config-if)#ip add 10.1.2.1 255.255.255.0
R1(config-if)#exit
R1(config)#
R1(config)#int lo 0
R1(config-if)#ip ospf net point-to-point
R1(config-if)#int lo 1
R1(config-if)#ip ospf net point-to-point
R1(config-if)#exit
R2(config-if)#ip add 192.168.1.2 255.255.255.252
R2(config-if)#no sh
R2(config-if)#int lo 0
R2(config-if)#ip add
R2(config-if)#no sh
R2(config-if)#ip ospf network point-to-point
R2(config-if)#int s1/1
R2(config-if)#ip add 192.168.1.5 255.255.255.252
R2(config-if)#no sh
R2(config-if)#exit
R3(config-if)#ip add 192.168.1.6 255.255.255.252
R3(config-if)#no sh
R3(config-if)#int s1/1
R3(config-if)#ip add 192.168.1.9 255.255.255.252
R3(config-if)#no sh
R3(config-if)#int lo 0
R3(config-if)#ip add
R3(config-if)#ip ospf ne point-to-point
R3(config-if)#exit
R3(config)#
R4(config-if)#ip add 192.168.1.10 255.255.255.252
R4(config-if)#no sh
R4(config-if)#int lo 0
R4(config-if)#ip add 172.16.1.1 255.255.255.0
R4(config-if)#ip ospf net point-to-p
R4(config-if)#int lo 1
R4(config-if)#ip add 172.16.2.1 255.255.255.0
R4(config-if)#ip ospf ne point-to-p
R4(config-if)#exit
R1(config-router)#router-id
R1(config-router)#net 10.1.1.1 0.0.
R1(config-router)#net 10.1.2.1 0.0.
R1(config-router)#net 192.168.1.1 0.0.
R1(config-router)#exit
R2(config-router)#router-id
R2(config-router)#net 192.168.1.2 0.0.
R2(config-router)#net 192.168.1.5 0.0.
R2(config-router)#net 2.2.2.2 0.0.
R2(config-router)#exit
R3(config-router)#router-id
R3(config-router)#net 192.168.1.6 0.0.
R3(config-router)#net 192.168.1.9 0.0.
R3(config-router)#net 3.3.3.3 0.0.
R3(config-router)#exit
R3(config)#
R4(config-router)#router-id
R4(config-router)#net 192.168.1.10 0.0.
R4(config-router)#net 172.16.1.1 0.0.
R4(config-router)#net 172.16.2.1 0.0.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
Packet sent with a source address of
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/61/128 ms
R1#p 172.16.2.1 so lo 1
Sending 5, 100-byte ICMP Echos to 172.16.2.1, timeout is 2 seconds:
Packet sent with a source address of
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/43/80 ms
R1#
O 3.3.3.0 [110/65] via 192.168.1.6, 00:04:58, Serial1/1
172.16.0.0/24 is subnetted, 2 subnets
O IA 172.16.1.0 [110/129] via 192.168.1.6, 00:04:39, Serial1/1
O IA 172.16.2.0 [110/129] via 192.168.1.6, 00:04:39, Serial1/1
10.0.0.0/24 is subnetted, 2 subnets
O 10.1.2.0 [110/65] via 192.168.1.1, 00:05:44, Serial1/0
O 10.1.1.0 [110/65] via 192.168.1.1, 00:05:44, Serial1/0
192.168.1.0/30 is subnetted, 3 subnets
O IA 192.168.1.8 [110/128] via 192.168.1.6, 00:04:58, Serial1/1
R2(config-router)#area 1 range
R3(config-router)#area 2 range 172.16.0.0 255.255.0.0
O 3.3.3.0 [110/65] via 192.168.1.6, 00:07:39, Serial1/1
O IA 172.16.0.0/16 [110/129] via 192.168.1.6, 00:04:26, Serial1/1
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 10.1.2.0/24 [110/65] via 192.168.1.1, 00:07:39, Serial1/0
O 10.1.1.0/24 [110/65] via 192.168.1.1, 00:07:39, Serial1/0
O 10.1.0.0/16 is a summary, 00:07:39, Null0
192.168.1.0/30 is subnetted, 3 subnets
O IA 192.168.1.8 [110/128] via 192.168.1.6, 00:07:39, Serial1/1
O 2.2.2.0 [110/65] via 192.168.1.5, 00:05:18, Serial1/0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
O 172.16.0.0/16 is a summary, 00:05:18, Null0
O 172.16.1.0/24 [110/65] via 192.168.1.10, 00:05:18, Serial1/1
O 172.16.2.0/24 [110/65] via 192.168.1.10, 00:05:18, Serial1/1
10.0.0.0/16 is subnetted, 1 subnets
O IA 10.1.0.0 [110/129] via 192.168.1.5, 00:05:18, Serial1/0
192.168.1.0/30 is subnetted, 3 subnets
O IA 192.168.1.0 [110/128] via 192.168.1.5, 00:05:18, Serial1/0