路由重发布之RIP和OSPF
实验拓扑图
实验过程
1.R1的预配置
| 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 172.16.1.1 255.255.255.0 R1(config-if)#exit R1(config)#int lo1 R1(config-if)#ip add 172.16.2.1 255.255.255.0 R1(config-if)#exit R1(config)#int s0/0 R1(config-if)#no shut R1(config-if)#ip add 172.16.255.1 255.255.255.252 R1(config-if)#exit |
2.R2的预配置
| 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 172.16.255.2 255.255.255.252 R2(config-if)#exit R2(config)#int s0/1 R2(config-if)#no shut R2(config-if)#ip add 192.168.255.2 255.255.255.0 R2(config-if)#exit |
3.R3的预配置
| 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 192.168.255.1 255.255.255.0 R3(config-if)#exit R3(config)#int lo0 R3(config-if)#ip add 192.168.1.1 255.255.255.0 R3(config-if)#exit R3(config)#int lo1 R3(config-if)#ip add 192.168.2.1 255.255.255.0 R3(config-if)#exit |
4.R1的ospf配置
| R1(config)#router ospf 1 R1(config-router)#net 172.16.1.1 0.0.0.0 area 0 R1(config-router)#net 172.16.2.1 0.0.0.0 area 0 R1(config-router)#net 172.16.255.1 0.0.0.0 area 0 R1(config-router)#end |
5.R2的ospf和rip配置
| R2(config)#router ospf 1 R2(config-router)#net 172.16.255.2 0.0.0.0 area 0 R2(config-router)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#no auto R2(config-router)#net 192.168.255.0 R2(config-router)#end |
6.R3的rip配置
| R3(config)#router rip R3(config-router)#version 2 R3(config-router)#no auto R3(config-router)#net 192.168.255.0 R3(config-router)#net 192.168.1.0 R3(config-router)#net 192.168.2.0 R3(config-router)#end |
7.查看R1和R3的路由表
| R1#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
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks C 172.16.255.0/30 is directly connected, Serial0/0 C 172.16.1.0/24 is directly connected, Loopback0 C 172.16.2.0/24 is directly connected, Loopback1 R3#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
C 192.168.255.0/24 is directly connected, Serial0/1 C 192.168.1.0/24 is directly connected, Loopback0 C 192.168.2.0/24 is directly connected, Loopback1 |
说明：R1和R3只有自己直连的网段信息，没有整个网络的信息，为了解决此问题，需要在R2上配置重发布。
8.在R2上配置重发布
| R2(config)#router ospf 1 R2(config-router)#redistribute rip metric 100 subnet //把rip重发布进ospf中，metric改为100，并且携带子网 R2(config-router)#exit R2(config)#router rip R2(config-router)#redistribute ospf 1 metric 10 //把ospf重发布进rip中，metric改为10 R2(config-router)#exit |
9.查看R1和R3的路由表
| R1#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
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks C 172.16.255.0/30 is directly connected, Serial0/0 C 172.16.1.0/24 is directly connected, Loopback0 C 172.16.2.0/24 is directly connected, Loopback1 O E2 192.168.255.0/24 [110/100] via 172.16.255.2, 00:02:52, Serial0/0 O E2 192.168.1.0/24 [110/100] via 172.16.255.2, 00:02:52, Serial0/0 O E2 192.168.2.0/24 [110/100] via 172.16.255.2, 00:02:52, Serial0/0 R3#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
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks R 172.16.255.0/30 [120/10] via 192.168.255.2, 00:00:10, Serial0/1 R 172.16.1.1/32 [120/10] via 192.168.255.2, 00:00:10, Serial0/1 R 172.16.2.1/32 [120/10] via 192.168.255.2, 00:00:10, Serial0/1 C 192.168.255.0/24 is directly connected, Serial0/1 C 192.168.1.0/24 is directly connected, Loopback0 C 192.168.2.0/24 is directly connected, Loopback1 |
说明：R1学习到了rip重发布进来的路由，默认是O E2。R3学习到了ospf重发布进来的路由。
10.在R1上查看ospf链路状态数据库
| R1#show ip ospf da
OSPF Router with ID (172.16.2.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count 172.16.2.1 172.16.2.1 1031 0x80000002 0x00AEF1 4 192.168.255.2 192.168.255.2 426 0x80000002 0x00CDC4 2
Type-5 AS External Link States //重发布进来的路由是5型的
Link ID ADV Router Age Seq# Checksum Tag 192.168.1.0 192.168.255.2 426 0x80000001 0x003644 0 192.168.2.0 192.168.255.2 426 0x80000001 0x002B4E 0 192.168.255.0 192.168.255.2 426 0x80000001 0x00413A 0 |
11.测试连通性
| R1#ping 192.168.1.1 source lo0
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds: Packet sent with a source address of 172.16.1.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 12/44/80 ms R1#ping 192.168.2.1 source lo0
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds: Packet sent with a source address of 172.16.1.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 36/59/72 ms |