这次试验，通过4台串联起来的cisco路由器（R1、R2、R3和R4），以达到模拟和多区域OSPF的路由重发布的功能实现。下面是这次OSPF的组网的拓扑图和各router的配置命令。
一、场景设置
说明：R1 Serial1/0 R2 Serial1/1 R3 Serial1/0 R4。需要在RB上配置路由再分配。
二、具体配置
1、RA的配置如下：
Router(config)#hostname RA
RA(config)#interface Loopback0 RA(config-if)#ip address 1.1.1.1 255.255.255.0 RA(config-if)#ip ospf network point-to-point RA(config-if)#exit RA(config)#interface Serial1/0 RA(config-if)#ip address 199.99.1.1 255.255.255.0 RA(config-if)#no shutdown RA(config-if)#exit RA(config)#router rip RA(config-router)#version 2 RA(config-router)#network 1.0.0.0 RA(config-router)#network 199.99.1.0 RA(config-router)#exit 2、RB的配置如下：
Router(config)#hostname RB
RB(config)#interface Loopback0 RB(config-if)#ip address 2.2.2.2 255.255.255.0 RB(config-if)#ip ospf network point-to-point RB(config-if)#exit RB(config)#interface Serial1/0 RB(config-if)#ip address 199.99.1.2 255.255.255.0 RB(config-if)#no shutdown RB(config-if)#exit RB(config)#interface Serial1/1 RB(config-if)#ip address 199.99.2.1 255.255.255.0 RB(config-if)#no shutdown RB(config-if)#exit RB(config)#router ospf 1 RB(config-router)#redistribute rip subnets RB(config-router)#network 199.99.2.0 0.0.0.255 area 0 RB(config-router)#network 2.2.2.0 0.0.0.255 area 0 RB(config-router)#exit RB(config)#router rip RB(config-router)#version 2 RB(config-router)#redistribute ospf 1 metric 2 RB(config-router)#network 199.99.1.0 RB(config-router)#no auto-summary RB(config-router)#exit 3、RC的配置如下：
RC(config)#hostname RC
RC(config)#interface Loopback0 RC(config-if)#ip address 3.3.3.3 255.255.255.0 RC(config-if)#ip ospf network point-to-point RC(config-if)#exit RC(config)#interface Serial1/1 RC(config-if)#ip address 199.99.2.2 255.255.255.0 RC(config-if)#no shutdown RC(config-if)#exit RC(config)#interface Serial1/0 RC(config-if)#ip address 199.99.3.1 255.255.255.0 http://www.luyouqiwang.com/14889 RC(config-if)#no shutdown RC(config-if)#exit RC(config)#router ospf 1 RC(config-router)#network 3.3.3.0 0.0.0.255 area 1 RC(config-router)#network 199.99.2.0 0.0.0.255 area 0 RC(config-router)#network 199.99.3.0 0.0.0.255 area 1 RC(config-router)#exit 4、RD的配置如下：
Router(config)#hostname RD
RD(config)#interface Loopback0 RD(config-if)#ip address 4.4.4.4 255.255.255.0 RD(config-if)#ip ospf network point-to-point RD(config-if)#exit RD(config)#interface Serial1/0 RD(config-if)#ip address 199.99.3.2 255.255.255.0 RD(config-if)#no shutdown RD(config-if)#exit RD(config)#router ospf 1 RD(config-router)#network 4.4.4.0 0.0.0.255 area 1 RD(config-router)#network 199.99.3.0 0.0.0.255 area 1 RD(config-router)#exit 三、验证配置
1、查看各路由器相关接口的开启状态：
RA#show ip interface brief
Interface IP-Address OK? Method Status Protocol Serial1/0 199.99.1.1 YES manual up up Loopback0 1.1.1.1 YES manual up up
RB#show ip interface brief
Interface IP-Address OK? Method Status Protocol Serial1/0 199.99.1.2 YES manual up up Serial1/1 199.99.2.1 YES manual up up
Loopback0 2.2.2.2 YES manual up up
RC#show ip interface brief
Interface IP-Address OK? Method Status Protocol Serial1/0 199.99.3.1 YES manual up up Serial1/1 199.99.2.2 YES manual up up
Loopback0 3.3.3.3 YES manual up up
RD#show ip interface brief
Interface IP-Address OK? Method Status Protocol Serial1/0 199.99.3.2 YES manual up up Loopback0 4.4.4.4 YES manual up up
可见相关的接口及链路协议已经处于开启状态！
2、查看各路由器的路由表：
RA#show 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
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets R 2.2.2.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0 3.0.0.0/24 is subnetted, 1 subnets R 3.3.3.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0 4.0.0.0/24 is subnetted, 1 subnets R 4.4.4.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0 R 199.99.3.0/24 [120/2] via 199.99.1.2, 00:00:17, Serial1/0 R 199.99.2.0/24 [120/2] via 199.99.1.2, 00:00:17, Serial1/0 C 199.99.1.0/24 is directly connected, Serial1/0 RB#show 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
R 1.0.0.0/8 [120/1] via 199.99.1.1, 00:00:01, Serial1/0
2.0.0.0/24 is subnetted, 1 subnets C 2.2.2.0 is directly connected, Loopback0 3.0.0.0/24 is subnetted, 1 subnets O IA 3.3.3.0 [110/65] via 199.99.2.2, 00:09:57, Serial1/1 4.0.0.0/24 is subnetted, 1 subnets O IA 4.4.4.0 [110/129] via 199.99.2.2, 00:05:15, Serial1/1 O IA 199.99.3.0/24 [110/128] via 199.99.2.2, 00:06:06, Serial1/1 C 199.99.2.0/24 is directly connected, Serial1/1 C 199.99.1.0/24 is directly connected, Serial1/0 RC#show 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
O E2 1.0.0.0/8 [110/20] via 199.99.2.1, 00:06:10, Serial1/1
2.0.0.0/24 is subnetted, 1 subnets O 2.2.2.0 [110/65] via 199.99.2.1, 00:07:01, Serial1/1 3.0.0.0/24 is subnetted, 1 subnets C 3.3.3.0 is directly connected, Loopback0 4.0.0.0/24 is subnetted, 1 subnets O 4.4.4.0 [110/65] via 199.99.3.2, 00:06:10, Serial1/0 C 199.99.3.0/24 is directly connected, Serial1/0 C 199.99.2.0/24 is directly connected, Serial1/1 O E2 199.99.1.0/24 [110/20] via 199.99.2.1, 00:06:10, Serial1/1 RD#show 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
O E2 1.0.0.0/8 [110/20] via 199.99.3.1, 00:06:56, Serial1/0
2.0.0.0/24 is subnetted, 1 subnets O IA 2.2.2.0 [110/129] via 199.99.3.1, 00:06:56, Serial1/0 3.0.0.0/24 is subnetted, 1 subnets O 3.3.3.0 [110/65] via 199.99.3.1, 00:06:56, Serial1/0 4.0.0.0/24 is subnetted, 1 subnets C 4.4.4.0 is directly connected, Loopback0 C 199.99.3.0/24 is directly connected, Serial1/0 O IA 199.99.2.0/24 [110/128] via 199.99.3.1, 00:06:56, Serial1/0 O E2 199.99.1.0/24 [110/20] via 199.99.3.1, 00:06:56, Serial1/0 3、在运行了OSPF协议的路由器查看邻居：
RB#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 0 FULL/ - 00:00:38 199.99.2.2 Serial1/1 RC#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:00:31 199.99.2.1 Serial1/1 4.4.4.4 0 FULL/ - 00:00:34 199.99.3.2 Serial1/0 RD#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 0 FULL/ - 00:00:33 199.99.3.1 Serial1/0 4、在运行了OSPF协议的路由器查看OSPF数据库：
RB#show ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 776 0x80000004 0x00D838 3 3.3.3.3 3.3.3.3 772 0x80000002 0x00DC49 2 Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
3.3.3.0 3.3.3.3 780 0x80000001 0x00CC5A 4.4.4.0 3.3.3.3 481 0x80000001 0x002BB8 199.99.3.0 3.3.3.3 532 0x80000001 0x00C2FF Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
1.0.0.0 2.2.2.2 1328 0x80000001 0x009EF8 0 199.99.1.0 2.2.2.2 1328 0x80000001 0x00D299 0 RC#show ip ospf database
OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 791 0x80000004 0x00D838 3 3.3.3.3 3.3.3.3 786 0x80000002 0x00DC49 2 Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
3.3.3.0 3.3.3.3 794 0x80000001 0x00CC5A 4.4.4.0 3.3.3.3 494 0x80000001 0x002BB8 199.99.3.0 3.3.3.3 545 0x80000001 0x00C2FF Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 509 0x80000004 0x0010F0 3 4.4.4.4 4.4.4.4 508 0x80000003 0x000FEB 3 Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
2.2.2.0 3.3.3.3 779 0x80000001 0x007376 199.99.2.0 3.3.3.3 809 0x80000001 0x00CDF5 Summary ASB Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 799 0x80000001 0x0047A0 Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
1.0.0.0 2.2.2.2 1363 0x80000001 0x009EF8 0 199.99.1.0 2.2.2.2 1365 0x80000001 0x00D299 0 RD#show ip ospf database
OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 523 0x80000004 0x0010F0 3 4.4.4.4 4.4.4.4 522 0x80000003 0x000FEB 3 Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
2.2.2.0 3.3.3.3 793 0x80000001 0x007376 199.99.2.0 3.3.3.3 803 0x80000001 0x00CDF5 Summary ASB Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 793 0x80000001 0x0047A0 Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag 1.0.0.0 2.2.2.2 1357 0x80000001 0x009EF8 0 199.99.1.0 2.2.2.2 1359 0x80000001 0x00D299 0 |
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