拓扑图
实验过程
1. R1的预配置
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Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line console 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R1 R1(config)#int lo0 R1(config-if)#ip add 10.1.1.1 255.255.255.0 R1(config-if)#int lo1 R1(config-if)#ip add 10.1.2.1 255.255.255.0 R1(config-if)#int s0/0 R1(config-if)#no shut R1(config-if)#ip add 192.168.1.1 255.255.255.252 R1(config-if)#exit |
2. R2的预配置
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Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line console 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R2 R2(config)#int s0/0 R2(config-if)#no shut R2(config-if)#ip add 192.168.1.2 255.255.255.252 R2(config-if)#int s0/1 R2(config-if)#no shut R2(config-if)#ip add 192.168.1.5 255.255.255.252 R2(config-if)#exit |
3. R3的预配置
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Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line console 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R3 R3(config)#int s0/1 R3(config-if)#no shut R3(config-if)#ip add 192.168.1.6 255.255.255.252 R3(config-if)#int s0/2 R3(config-if)#no shut R3(config-if)#ip add 192.168.1.9 255.255.255.252 R3(config-if)#exit |
4. R4的预配置
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Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line console 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R4 R4(config)#int s0/2 R4(config-if)#no shut R4(config-if)#ip add 192.168.1.10 255.255.255.252 R4(config-if)#int lo0 R4(config-if)#ip add 172.16.1.1 255.255.255.0 R4(config-if)#int lo1 R4(config-if)#ip add 172.16.2.1 255.255.255.0 R4(config-if)#exit |
5. R1的OSPF配置
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R1(config)#router ospf 1 R1(config-router)#router-id 1.1.1.1 R1(config-router)#net 192.168.1.1 0.0.0.0 area 1 R1(config-router)#net 10.1.1.1 0.0.0.0 area 1 R1(config-router)#net 10.1.2.1 0.0.0.0 area 1 R1(config-router)#end |
6. R2的OSPF配置
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R2(config)#router ospf 1 R2(config-router)#router-id 2.2.2.2 R2(config-router)#net 192.168.1.2 0.0.0.0 area 1 R2(config-router)#net 192.168.1.5 0.0.0.0 area 0 R2(config-router)#end |
7. R3的OSPF配置
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R3(config)#router ospf 1 R3(config-router)#router-id 3.3.3.3 R3(config-router)#net 192.168.1.6 0.0.0.0 area 0 R3(config-router)#net 192.168.1.9 0.0.0.0 area 2 R3(config-router)#end |
8. R4的OSPF配置
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R4(config)#router ospf 1 R4(config-router)#router-id 4.4.4.4 Reload or use "clear ip ospf process" command, for this to take effect R4(config-router)#net 192.168.1.10 0.0.0.0 area 2 R4(config-router)#net 172.16.1.1 0.0.0.0 area 2 R4(config-router)#net 172.16.2.1 0.0.0.0 area 2 R4(config-router)#end |
9. 查看R2和R3的邻居表
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R2#show ip ospf nei Neighbor ID Pri State Dead Time Address Interface 3.3.3.3 0 FULL/ - 00:00:37 192.168.1.6 Serial0/1 1.1.1.1 0 FULL/ - 00:00:31 192.168.1.1 Serial0/0 R3#show ip ospf nei Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 0 FULL/ - 00:00:30 192.168.1.5 Serial0/1 4.4.4.4 0 FULL/ - 00:00:30 192.168.1.10 Serial0/2 |
10. 查看R2的链路状态数据库
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R2#show ip ospf da OSPF Router with ID (2.2.2.2) (Process ID 1) Router Link States (Area 0) //LSA 1 Link ID ADV Router Age Seq# Checksum Link count 2.2.2.2 2.2.2.2 156 0x80000006 0x002B7C 2 3.3.3.3 3.3.3.3 762 0x80000005 0x00CCD6 2 Summary Net Link States (Area 0) //LSA 3 Link ID ADV Router Age Seq# Checksum 10.1.1.1 2.2.2.2 152 0x80000001 0x0036B0 10.1.2.1 2.2.2.2 152 0x80000001 0x002BBA 172.16.1.1 3.3.3.3 757 0x80000001 0x002110 172.16.2.1 3.3.3.3 757 0x80000001 0x00161A 192.168.1.0 2.2.2.2 152 0x80000001 0x00018C 192.168.1.8 3.3.3.3 757 0x80000001 0x0092EE Router Link States (Area 1) //LSA 1 Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 157 0x80000003 0x000C76 4 2.2.2.2 2.2.2.2 156 0x80000001 0x006E4D 2 Summary Net Link States (Area 1) //LSA 3 Link ID ADV Router Age Seq# Checksum 172.16.1.1 2.2.2.2 158 0x80000001 0x00C133 172.16.2.1 2.2.2.2 158 0x80000001 0x00B63D 192.168.1.4 2.2.2.2 158 0x80000001 0x00D8B0 192.168.1.8 2.2.2.2 158 0x80000001 0x003312 |
11. 查看R4的路由表
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R4#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 172.16.0.0/24 is subnetted, 2 subnets C 172.16.1.0 is directly connected, Loopback0 C 172.16.2.0 is directly connected, Loopback1 10.0.0.0/32 is subnetted, 2 subnets O IA 10.1.2.1 [110/193] via 192.168.1.9, 00:14:14, Serial0/2 O IA 10.1.1.1 [110/193] via 192.168.1.9, 00:14:14, Serial0/2 192.168.1.0/30 is subnetted, 3 subnets C 192.168.1.8 is directly connected, Serial0/2 O IA 192.168.1.0 [110/192] via 192.168.1.9, 00:14:14, Serial0/2 O IA 192.168.1.4 [110/128] via 192.168.1.9, 00:14:14, Serial0/2 |
R4从R1学到的不是汇总的路由，OSPF默认不对路由进行汇总。
12. 测试连通性
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R1#ping 172.16.1.1 source lo0 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds: Packet sent with a source address of 10.1.1.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 12/67/108 ms R1#ping 172.16.1.1 source lo1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds: Packet sent with a source address of 10.1.2.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 28/56/124 ms |
13. 在R2上做区域间路由汇总
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R2(config)#router ospf 1 R2(config-router)#area 1 range 10.1.0.0 255.255.252.0 //区域间汇总在ABR上配置 R2(config-router)#end |
14. 再次测试连通性
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R4#ping 10.1.1.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 48/57/76 ms R4#ping 10.1.2.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.1.2.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 44/84/104 ms |
