ospf认证实验

R1(config)#int s2/1

R1(config-if)#ip add 12.0.0 .1 255.255.255.0

R1(config-if)#no shu

R1(config-if)#

*Jul 19 22:57:04.827: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

R1(config-if)#

*Jul 19 22:57:05.831: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R1(config-if)#d ping 12.0.0 .2

% Ambiguous command:  "d ping 12.0.0 .2"

R1(config-if)#do ping 12.0.0 .2

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0 .2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 24/60/96 ms

R1(config-if)#eix  

               ^

% Invalid input detected at '^' marker.

 

R1(config-if)#exit

R1(config)#route ospf 1

% Ambiguous command:  "route ospf 1"

R1(config)#router ospf 1

R1(config-router)#rou

R1(config-router)#router-id 1.1.1 .1

R1(config-router)#net 12.0.0

% Incomplete command.

 

R1(config-router)#net 12.0.0 .0 0.0. 0.255 a 0

R1(config-router)#

*Jul 19 23:01:02.083: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from LOADING to FULL, Loading Done

R1(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:02:31, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

O       34.0.0.0 [110/192] vi a 12.0.0 .2, 00:00:09, Serial2/1

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:00:09, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1(config-router)#do ping 34.0.0.4

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 120/176/316 ms

R1(config-router)#sh ip route

                   ^

% Invalid input detected at '^' marker.

 

R1(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:00:05, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:00:00, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1(config-router)#^Z   

R1#sh i

*Jul 19 23:07:35.915: %SYS-5-CONFIG_I: Configured from console by console

R1#sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

O       34.0.0.0 [110/192] vi a 12.0.0 .2, 00:00:10, Serial2/1

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:00:10, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1#ping 34.0.0.4

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 76/156/236 ms

R1#conf

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line.  End with CNTL/Z.

R1(config)#int s2/1

R1(config-if)#ip os

R1(config-if)#ip ospf au

R1(config-if)#ip ospf authentication

R1(config-if)#ip ospf au

R1(config-if)#ip ospf authentication-k

R1(config-if)#ip ospf authentication-key cisco

R1(config-if)#

*Jul 19 23:11:31.751: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from FULL to DOWN, Neighbor Down: Dead timer expired

R1(config-if)#

*Jul 19 23:18:28.287: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from LOADING to FULL, Loading Done

R1(config-if)#^Z

R1#ping

*Jul 19 23:26:46.231: %SYS-5-CONFIG_I: Configured from console by console

R1#ping 34.0.0.4

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 96/168/232 ms

R1#sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

O       34.0.0.0 [110/192] vi a 12.0.0 .2, 00:04:52, Serial2/1

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] vi a 12.0.0 .2, 00:04:52, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R1#

 

 

R2(config)#int s2/1

R2(config-if)#ip add 12.0.0 .2 255.255.255.0

R2(config-if)#no shu

R2(config-if)#int

*Jul 19 22:57:16.103: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

R2(config-if)#int s

*Jul 19 22:57:17.107: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R2(config-if)#int s2/2

R2(config-if)#ip add 23.0.0 .2 255.255.255.0

R2(config-if)#no shu

R2(config-if)#

*Jul 19 22:57:36.183: %LINK-3-UPDOWN: Interface Serial2/2, changed state to up

R2(config-if)#

*Jul 19 22:57:37.187: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up

R2(config-if)#

*Jul 19 22:57:59.711: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to down

R2(config-if)#

*Jul 19 22:58:09.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up

R2(config-if)#do ping 23.0.0 .3

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 23.0.0 .3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/83/188 ms

R2(config-if)#exit

R2(config)#router ospf 1

R2(config-router)#rou

R2(config-router)#router-id 2.2.2 .2 255.255.255.0

                                    ^

% Invalid input detected at '^' marker.

 

R2(config-router)#rou

R2(config-router)#router-id 2.2.2 .2

R2(config-router)#net 12.0.0 .0 0.0

% Incomplete command.

 

R2(config-router)#net 12.0.0 .0 0.0. 0.255 a 0

R2(config-router)#net

*Jul 19 23:00:57.167: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1 .1 on Serial2/1 from LOADING to FULL, Loading Done

R2(config-router)#net 23.0.0 .0 0.0. 0.255 a 23

R2(config-router)#

*Jul 19 23:01:34.479: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/2 from LOADING to FULL, Loading Done

R2(config-router)#ar

R2(config-router)#area 23 v

R2(config-router)#area 23 virtual-link 3.3.3 .3

R2(config-router)#

*Jul 19 23:03:38.895: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on OSPF_VL0 from LOADING to FULL, Loading Done

R2(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

O       34.0.0.0 [110/128] vi a 23.0.0 .3, 00:00:54, Serial2/2

     23.0.0 .0/24 is subnetted, 1 subnets

C       23.0.0 .0 is directly connected, Serial2/2

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R2(config-router)#no ar

R2(config-router)#no area 23 v

R2(config-router)#no area 23 virtual-link 3.3.3 .3

R2(config-router)#

*Jul 19 23:06:32.727: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on OSPF_VL0 from FULL to DOWN, Neighbor Down: Interface down or detached

R2(config-router)#ar

R2(config-router)#area 23 v

R2(config-router)#area 23 virtual-link 3.3.3 .3

R2(config-router)#

*Jul 19 23:07:08.719: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on OSPF_VL1 from LOADING to FULL, Loading Done

R2(config-router)#

*Jul 19 23:11:32.919: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1 .1 on Serial2/1 from FULL to DOWN, Neighbor Down: Dead timer expired

R2(config-router)#router ospf 1

R2(config-router)#ar

R2(config-router)#area 0 au

R2(config-router)#area 0 authentication

R2(config-router)#ar

R2(config-router)#area 23 au

R2(config-router)#area 23 authentication mess

R2(config-router)#area 23 authentication message-digest

R2(config-router)#int ip

*Jul 19 23:17:44.371: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/2 from FULL to DOWN, Neighbor Down: Dead timer expired

R2(config-router)#int s2/1

R2(config-if)#ip

*Jul 19 23:17:49.871: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on OSPF_VL1 from FULL to DOWN, Neighbor Down: Interface down or detached

R2(config-if)#ip ospf au

R2(config-if)#ip ospf authentication-k

R2(config-if)#ip ospf authentication-key cisco

R2(config-if)#int s2/2

R2(config-if)#

*Jul 19 23:18:23.323: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1 .1 on Serial2/1 from LOADING to FULL, Loading Done

R2(config-if)#ip ospf mes

R2(config-if)#ip ospf message-digest-key 1 md5 cisco

R2(config-if)#

*Jul 19 23:23:04.603: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/2 from LOADING to FULL, Loading Done

R2(config-if)#

*Jul 19 23:23:20.255: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on OSPF_VL1 from LOADING to FULL, Loading Done

R2(config-if)#^Z

R2#ping

*Jul 19 23:27:16.587: %SYS-5-CONFIG_I: Configured from console by console

R2#ping 34.0.0.4

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 72/131/248 ms

R2#sh ip rooute

           ^

% Invalid input detected at '^' marker.

 

R2#sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

O       34.0.0.0 [110/128] vi a 23.0.0 .3, 00:04:46, Serial2/2

     23.0.0 .0/24 is subnetted, 1 subnets

C       23.0.0 .0 is directly connected, Serial2/2

     12.0.0 .0/24 is subnetted, 1 subnets

C       12.0.0 .0 is directly connected, Serial2/1

R2#

 

 

 

R3(config)#int s2/1

R3(config-if)#ip add 23.0.0 .3 255.255.255.0

R3(config-if)#no shu

R3(config-if)#int s

*Jul 19 22:57:54.443: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

R3(config-if)#int s2/

*Jul 19 22:57:55.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R3(config-if)#int s2/2

R3(config-if)#ip add 34.0.0.3 255.255.255.0

R3(config-if)#no shu

R3(config-if)#

*Jul 19 22:58:11.163: %LINK-3-UPDOWN: Interface Serial2/2, changed state to up

R3(config-if)#

*Jul 19 22:58:12.167: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up

R3(config-if)#

*Jul 19 22:58:39.695: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to down

R3(config-if)#

*Jul 19 22:58:49.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up

R3(config-if)#do ping 34.0.0.4

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 44/76/96 ms

R3(config-if)#exit

R3(config)#router ospf 1

R3(config-router)#rou

R3(config-router)#router-id 3.3.3 .3

R3(config-router)#net 23.0.0 .0 0.0. 0.255 a 23

R3(config-router)#net

*Jul 19 23:01:32.923: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from LOADING to FULL, Loading Done

R3(config-router)#net 34.0.0.0 0

% Incomplete command.

 

R3(config-router)#net 34.0.0.0 0.0.0 .255 a 0

R3(config-router)#

*Jul 19 23:02:20.739: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4 .4 on Serial2/2 from LOADING to FULL, Loading Done

R3(config-router)#

*Jul 19 23:03:22.475: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 23.0.0 .2, Serial2/1

R3(config-router)#ar

R3(config-router)#area 23 v

R3(config-router)#area 23 virtual-link

*Jul 19 23:03:32.447: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 23.0.0 .2, Serial2/1

R3(config-router)#area 23 virtual-link 2.2.2 .2

R3(config-router)#

*Jul 19 23:03:37.263: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on OSPF_VL0 from LOADING to FULL, Loading Done

R3(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

C       34.0.0.0 is directly connected, Serial2/2

     23.0.0 .0/24 is subnetted, 1 subnets

C       23.0.0 .0 is directly connected, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

O       12.0.0 .0 [110/128] vi a 23.0.0 .2, 00:01:13, Serial2/1

R3(config-router)#

*Jul 19 23:07:07.011: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on OSPF_VL0 from LOADING to FULL, Loading Done

R3(config-router)#

*Jul 19 23:17:44.747: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from FULL to DOWN, Neighbor Down: Dead timer expired

R3(config-router)#

*Jul 19 23:17:50.247: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on OSPF_VL0 from FULL to DOWN, Neighbor Down: Interface down or detached

R3(config-router)#exit

R3(config)#router ospf 1

R3(config-router)#ar

R3(config-router)#area 0 au

R3(config-router)#area 0 authentication

R3(config-router)#ar

R3(config-router)#area 23 au

R3(config-router)#area 23 authentication mess

R3(config-router)#area 23 authentication message-digest

R3(config-router)#

*Jul 19 23:21:00.347: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4 .4 on Serial2/2 from FULL to DOWN, Neighbor Down: Dead timer expired

R3(config-router)#int s2/1

R3(config-if)#ip ospf mess

R3(config-if)#ip ospf message-digest-key 1 md5 cisco

R3(config-if)#

*Jul 19 23:23:03.039: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on Serial2/1 from LOADING to FULL, Loading Done

R3(config-if)#int s2/1

R3(config-if)#

*Jul 19 23:23:18.643: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2 .2 on OSPF_VL0 from LOADING to FULL, Loading Done

R3(config-if)#ip ospf au

R3(config-if)#ip ospf authentication-k

R3(config-if)#ip ospf authentication-key cisco

R3(config-if)#no ip ospf authentication-key cisco

R3(config-if)#ip ospf message-digest-key 1 md5 cisco

OSPF: Key 1 already exists

R3(config-if)#int s2/2

R3(config-if)#ip ospf au

R3(config-if)#ip ospf authentication-k

R3(config-if)#ip ospf authentication-key cisco

R3(config-if)#

*Jul 19 23:26:30.703: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4 .4 on Serial2/2 from LOADING to FULL, Loading Done

R3(config-if)#^Z

R3#pi

*Jul 19 23:27:03.935: %SYS-5-CONFIG_I: Configured from console by console

R3#ping 12.0.0 .1

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0 .1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 48/144/264 ms

R3#sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

C       34.0.0.0 is directly connected, Serial2/2

     23.0.0 .0/24 is subnetted, 1 subnets

C       23.0.0 .0 is directly connected, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

O       12.0.0 .0 [110/128] vi a 23.0.0 .2, 00:04:33, Serial2/1

R3#

 

 

 

 

R4(config)#int s2/1

R4(config-if)#ip add 34.0.0.4 255.255.255.0

R4(config-if)#no shu 

R4(config-if)#

*Jul 19 22:58:37.923: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

*Jul 19 22:58:38.923: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R4(config-if)#exit

R4(config)#router ospf 1

R4(config-router)#ro 

R4(config-router)#router-id 4.4.4 .4

R4(config-router)#net 34.0.0.0 0.0.0 .255 a 0

R4(config-router)#

*Jul 19 23:02:17.115: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/1 from LOADING to FULL, Loading Done

R4(config-router)#do sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

C       34.0.0.0 is directly connected, Serial2/1

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] via 34.0.0.3, 00:01:21, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

O       12.0.0 .0 [110/192] via 34.0.0.3, 00:01:21, Serial2/1

R4(config-router)#do ping 12.0.0 .1

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0 .1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 64/148/300 ms

R4(config-router)#

*Jul 19 23:20:59.351: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/1 from FULL to DOWN, Neighbor Down: Dead timer expired

R4(config-router)#int s2/1

R4(config-if)#ip ospf au

R4(config-if)#ip ospf authentication

R4(config-if)#ip ospf au

R4(config-if)#ip ospf authentication-k

R4(config-if)#ip ospf authentication-key cisco

R4(config-if)#

*Jul 19 23:26:26.975: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3 .3 on Serial2/1 from LOADING to FULL, Loading Done

R4(config-if)#^Z

R4#pi

*Jul 19 23:26:51.367: %SYS-5-CONFIG_I: Configured from console by console

R4#ping 12.0.0 .1

 

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0 .1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 132/215/268 ms

R4#sh ip route

Codes: C - connected, S - static, 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

       i - IS-IS, su - IS-IS summary, 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

 

     34.0.0.0/24 is subnetted, 1 subnets

C       34.0.0.0 is directly connected, Serial2/1

     23.0.0 .0/24 is subnetted, 1 subnets

O IA    23.0.0 .0 [110/128] via 34.0.0.3, 00:04:24, Serial2/1

     12.0.0 .0/24 is subnetted, 1 subnets

O       12.0.0 .0 [110/192] via 34.0.0.3, 00:04:24, Serial2/1

R4#

 

 

 

 

R2 和 R3 之间搭一条需链路