詳解BSCI實驗2、配置ospf驗證，彙總，虛鏈路

時間 2019-12-18

標籤詳解 bsci 實驗配置 ospf 驗證彙總鏈路简体版

原文原文鏈接

實驗2、配置ospf驗證，彙總，虛鏈路

環境：三臺路由器串口相連，其它接口配置如圖

要求：1.在area 1配置ospf虛鏈路,router-id如圖配置

2.將R1的LOOP口配置ospf手工路由彙總

3. 配置ospf接口驗證（R1 和R2）

4.使用show命令查看結果

步驟一：配置三個路由器接口使其連通。

R1的配置

R1(config)# interface Loopback0

R1(config-if)# ip address 30.1.1.1 255.255.255.0

R1(config)# interface Loopback1

R1(config-if)# ip address 30.1.2.1 255.255.255.0

R1(config)# interface Loopback2

R1(config-if)# ip address 30.1.3.1 255.255.255.0

R1(config)# interface s0

R1(config-if)# ip address 10.1.1 .1 255.255.255.0

R1(config-if)#no shutdown

R2的配置

R2(config)# interface Loopback0

R2(config-if)# ip address 50.1.1.1 255.255.255.0

R2(config)# interface s0

R2(config-if)# ip address 10.1.1 .2 255.255.255.0

R2(config-if)#clockrate 64000

R2(config-if)#no shutdown

R2(config)# interface s1

R2(config-if)# ip address 20.1.1 .1 255.255.255.0

R2(config-if)#no shutdown

R3的配置

R3(config)# interface Loopback0

R3(config-if)# ip address 40.1.1.1 255.255.255.0

R3(config)# interface s1

R3(config-if)# ip address 20.1.1 .2 255.255.255.0

R3(config-if)#clockrate 64000

R3(config)#no shutdown

步驟二：配置ospf

R1的配置

R1(config)#router ospf 1 à啓用ospf協議，進程號爲1

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

R1(config-router)#network 10.1.1 .0 0.0.0.255 area 1 à將接口參與到區域1內

R1(config-router)#network 30.1.1.0 0.0.0 .255 area 0 à將接口參與到區域0內

R1(config-router)#network 30.1.2.0 0.0.0 .255 area 0

R1(config-router)#network 30.1.3.0 0.0.0 .255 area 0

R2的配置

R2(config)#router ospf 1

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

R2(config-router)#network 10.1.1 .0 0.0.0.255 area 1

R2(config-router)#network 20.1.1 .0 0.0.0.255 area 2 à將接口參與到區域2內

R2(config-router)#network 50.1.1.0 0.0.0 .255 area 1

R3的配置

R3(config)#router ospf 2

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

R3(config-router)#network 20.1.1 .0 0.0.0.255 area 2

R3(config-router)#network 40.1.1.0 0.0.0 .255 area 2

步驟三：配置ospf虛鏈路

R1的配置

R1(config)#router ospf 1

R1(config-router)# area 1 virtual-link 2.2.2 .2 à配置虛電路,指對端的router-id

R2的配置

R2(config)#router ospf 1

R2(config-router)# area 1 virtual-link 1.1.1 .1

步驟四：配置ospf手工路由彙總

R1的配置

R1(config)#router ospf 1

R1(config-router)# area 0 range 30.1.0.0 255.255.252.0 à手工彙總路由

R2的配置

R2(config)#router ospf 1

R2(config-router)# area 0 range 30.1.0.0 255.255.252.0 à因你的區域0已經延伸到此

步驟五：配置ospf接口驗證（R1 和R2）

R1的配置

R1(config)# interface Serial0

R1(config-if)# ip ospf authentication message-digest à啓用驗證

R1(config-if)# ip ospf message-digest-key 1 md5 cisco à定義密鑰

R2的配置

R2(config)# interface Serial0

R2(config-if)# ip ospf authentication message-digest

R2(config-if)# ip ospf message-digest-key 1 md5 cisco à兩端必須一致

步驟六：查看路由表

R1#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, 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

50.0.0.0/32 is subnetted, 1 subnets

O 50.1.1.1 [110/65] vi a 10.1.1 .2, 00:09:41, Serial0 àOSPF域內學來的路由條目

20.0.0 .0/24 is subnetted, 1 subnets

O IA 20.1.1 .0 [110/128] vi a 10.1.1 .2, 00:09:31, Serial0 àOSPF域間學來的路由條目

40.0.0.0/32 is subnetted, 1 subnets

O IA 40.1.1.1 [110/129] vi a 10.1.1 .2, 00:09:31, Serial0

10.0.0 .0/24 is subnetted, 1 subnets

C 10.1.1 .0 is directly connected, Serial0

30.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

C 30.1.3.0/24 is directly connected, Loopback2

C 30.1.2.0/24 is directly connected, Loopback1

C 30.1.1.0/24 is directly connected, Loopback0

O 30.1.0.0/22 is a summary, 00:09:32, Null0 à手工彙總的條目

R2#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, 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

50.0.0.0/24 is subnetted, 1 subnets

C 50.1.1.0 is directly connected, Loopback0

20.0.0 .0/24 is subnetted, 1 subnets

C 20.1.1 .0 is directly connected, Serial1

40.0.0.0/32 is subnetted, 1 subnets

O 40.1.1.1 [110/65] vi a 20.1.1 .2, 00:04:48, Serial1

10.0.0 .0/24 is subnetted, 1 subnets

C 10.1.1 .0 is directly connected, Serial0

30.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

O 30.1.2.1/32 [110/65] vi a 10.1.1 .1, 00:04:38, Serial0

O 30.1.3.1/32 [110/65] vi a 10.1.1 .1, 00:04:39, Serial0

O 30.1.0.0/22 is a summary, 00:04:39, Null0

O 30.1.1.1/32 [110/65] vi a 10.1.1 .1, 00:04:39, Serial0

R3#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, 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

50.0.0.0/32 is subnetted, 1 subnets

O IA 50.1.1.1 [110/65] vi a 20.1.1 .1, 00:02:02, Serial1

20.0.0 .0/24 is subnetted, 1 subnets

C 20.1.1 .0 is directly connected, Serial1

40.0.0.0/24 is subnetted, 1 subnets

C 40.1.1.0 is directly connected, Loopback0

10.0.0 .0/24 is subnetted, 1 subnets

O IA 10.1.1 .0 [110/128] vi a 20.1.1 .1, 00:02:02, Serial1

30.0.0.0/22 is subnetted, 1 subnets

O IA 30.1.0.0 [110/129] vi a 20.1.1 .1, 00:01:47, Serial1

步驟七：查看鄰居表

R1#show ip ospf neighbor à鄰居已創建，點對點無DR之說

Neighbor ID Pri State Dead Time Address Interface

2.2.2 .2 1 FULL/ - 00:00:33 10.1.1 .2 Serial0

R2#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface

1.1.1 .1 1 FULL/ - 00:00:33 10.1.1 .1 Serial0

3.3.3 .3 1 FULL/ - 00:00:34 20.1.1 .2 Serial1

R3#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface

2.2.2 .2 1 FULL/ - 00:00:37 20.1.1 .1 Serial1

步驟八：用ping命令測試

R1#ping 40.1.1.1 à測試連通性

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 56/60/68 ms

R1#ping 50.1.1.1

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/36 ms

R2#ping 30.1.1.1

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms

步驟九：顯示當前配置信息

R1的配置信息

R1#sh run

hostname R1

interface Loopback0

ip address 30.1.1.1 255.255.255.0

interface Loopback1

ip address 30.1.2.1 255.255.255.0

interface Loopback2

ip address 30.1.3.1 255.255.255.0

interface Serial0

ip address 10.1.1 .1 255.255.255.0

ip ospf authentication message-digest

ip ospf message-digest-key 1 md5 cisco

router ospf 1

router-id 1.1.1 .1

area 0 range 30.1.0.0 255.255.252.0

area 1 virtual-link 2.2.2 .2

network 10.1.1 .0 0.0.0.255 area 1

network 30.1.1.0 0.0.0 .255 area 0

network 30.1.2.0 0.0.0 .255 area 0

network 30.1.3.0 0.0.0 .255 area 0

end

R2#sh run

hostname R2

interface Loopback0

ip address 50.1.1.1 255.255.255.0

interface Serial0

ip address 10.1.1 .2 255.255.255.0

ip ospf authentication message-digest

ip ospf message-digest-key 1 md5 cisco

clockrate 64000

interface Serial1

ip address 20.1.1 .1 255.255.255.0

router ospf 1

router-id 2.2.2 .2

area 0 range 30.1.0.0 255.255.252.0

area 1 virtual-link 1.1.1 .1

network 10.1.1 .0 0.0.0.255 area 1

network 20.1.1 .0 0.0.0.255 area 2

network 50.1.1.0 0.0.0 .255 area 1

end

R3#sh run

Hostname R3

interface Loopback0

ip address 40.1.1.1 255.255.255.0

interface Serial1

ip address 20.1.1 .2 255.255.255.0

clockrate 64000

router ospf 2

router-id 3.3.3 .3

network 20.1.1 .0 0.0.0.255 area 2

network 40.1.1.0 0.0.0 .255 area 2

end

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