OSPF的高级应用之rip！（CISCO)
案例二：
1. 作业要求:
<1 实现运行ospf协议与运行rip协议的网络之间的通信
方法：路由重分发 注入默认路由
<2配置末梢区域
<3 配置完全末梢区域
2. 拓扑图
3. 设备配置如下:
R1(config)#line console 0
R1(config-line)#logging SYNchronous
R1(config-line)#exec-timeout 0 0
R1(config)#int s1/0
R1(config-if)#ip add 192.168.2.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#int loopback 1
R1(config-if)#ip add 192.168.1.1 255.255.255.0
R1(config)#router ospf 223
R1(config-router)#network 192.168.1.0 0.0.0.255 area 1
R1(config-router)#network 192.168.2.0 0.0.0.255 area 1
R2(config)#int s1/0
R2(config-if)#ip add 192.168.2.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#int s1/1
R2(config-if)#ip add 192.168.3.1 255.255.255.0
R2(config-if)#no shut
R2(config-router)#int s1/3
R2(config-if)#ip add 192.168.6.1 255.255.255.0
R2(config-if)#no shut
R2(config-if)#router ospf 223
R2(config-router)#net 192.168.2.0 0.0.0.255 area 1
R2(config-router)#net 192.168.3.0 0.0.0.255 area 0
R2(config-if)#router rip
R2(config-router)#network 192.168.6.0
R3(config)#int s1/1
R3(config-if)#ip add 192.168.3.2 255.255.255.0
R3(config-if)#no shut
R3(config-if)#int s1/2
R3(config-if)#ip add 192.168.4.1 255.255.255.0
R3(config-if)#no shut
R3(config)#router ospf 223
R3(config-router)#network 192.168.3.0 0.0.0.255 area 0
R3(config-router)#network 192.168.4.0 0.0.0.255 area 2
R4(config)#int s1/2
R4(config-if)#ip add 192.168.4.2 255.255.255.0
R4(config-if)#no shut
R4(config-if)#int lo 1
R4(config-if)#ip add 192.168.5.1 255.255.255.0
R4(config)#router ospf 223
R4(config-router)#net 192.168.4.0 0.0.0.255 area 2
R4(config-router)#net 192.168.5.0 0.0.0.255 area 2
R5(config)#int s1/3
R5(config-if)#ip add 192.168.6.2 255.255.255.0
R5(config-if)#no shut
R5(config-if)#int f0/0
R5(config-if)#ip add 192.168.7.1 255.255.255.0
R5(config-if)#no shut
R5(config-if)#router rip
R5(config-router)#network 192.168.6.0
R5(config-router)#network 192.168.7.0
R6(config)#int f0/0
R6(config-if)#ip add 192.168.7.2 255.255.255.0
R6(config-if)#no shut
R6(config-if)#int lo 1
R6(config-if)#ip add 192.168.8.1 255.255.255.0
R6(config-if)#router rip
R6(config-router)#network 192.168.7.0
R6(config-router)#network 192.168.8.0
R4查看路由表:
C 192.168.4.0/24 is directly connected, Serial1/2
C 192.168.5.0/24 is directly connected, Loopback1
192.168.1.0/32 is subnetted, 1 subnets
O IA 192.168.1.1 [110/193] via 192.168.4.1, 00:12:37, Serial1/2
O IA 192.168.2.0/24 [110/192] via 192.168.4.1, 00:12:37, Serial1/2
O IA 192.168.3.0/24 [110/128] via 192.168.4.1, 00:12:37, Serial1/2
R4#
R1查看路由表:
O IA 192.168.4.0/24 [110/192] via 192.168.2.2, 00:15:08, Serial1/0
192.168.5.0/32 is subnetted, 1 subnets
O IA 192.168.5.1 [110/193] via 192.168.2.2, 00:14:22, Serial1/0
C 192.168.1.0/24 is directly connected, Loopback1
C 192.168.2.0/24 is directly connected, Serial1/0
O IA 192.168.3.0/24 [110/128] via 192.168.2.2, 00:21:35, Serial1/0
路由重分发:
R2(config)#router ospf 223
R2(config-router)#redistribute rip metric 200
% Only classful networks will be redistributed
O E2 192.168.8.0/24 [110/200] via 192.168.4.1, 00:00:03, Serial1/2
C 192.168.4.0/24 is directly connected, Serial1/2
C 192.168.5.0/24 is directly connected, Loopback1
O E2 192.168.6.0/24 [110/200] via 192.168.4.1, 00:00:03, Serial1/2
O E2 192.168.7.0/24 [110/200] via 192.168.4.1, 00:00:03, Serial1/2
192.168.1.0/32 is subnetted, 1 subnets
O IA 192.168.1.1 [110/193] via 192.168.4.1, 00:17:24, Serial1/2
O IA 192.168.2.0/24 [110/192] via 192.168.4.1, 00:17:24, Serial1/2
O IA 192.168.3.0/24 [110/128] via 192.168.4.1, 00:17:25, Serial1/2
R4#
4. 路由重分发：
单向重分发不能ping通
R4#ping 192.168.7.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.7.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
(由于OSPF用于大型网络，流量比较大，传过来的数据无法承受，所以，在rip中注入默认路由)
R2(config)#router rip
R2(config-router)#default-information originate
R6#show ip route
C 192.168.8.0/24 is directly connected, Loopback1
R 192.168.6.0/24 [120/1] via 192.168.7.1, 00:00:01, FastEthernet0/0
C 192.168.7.0/24 is directly connected, FastEthernet0/0
R* 0.0.0.0/0 [120/2] via 192.168.7.1, 00:00:01, FastEthernet0/0
R6#ping 192.168.5.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.5.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/62/76 ms
双向都重分发：
R4#ping 192.168.7.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.7.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/76/100 ms
R3(config)#router ospf 223
R3(config-router)#area 2 stub
R4(config)#router ospf 223
R4(config-router)#area 2 stub
R4#show ip route
C 192.168.4.0/24 is directly connected, Serial1/2
C 192.168.5.0/24 is directly connected, Loopback1
192.168.1.0/32 is subnetted, 1 subnets
O IA 192.168.1.1 [110/193] via 192.168.4.1, 00:00:17, Serial1/2
O IA 192.168.2.0/24 [110/192] via 192.168.4.1, 00:00:17, Serial1/2
O IA 192.168.3.0/24 [110/128] via 192.168.4.1, 00:00:17, Serial1/2
O*IA 0.0.0.0/0 [110/65] via 192.168.4.1, 00:00:17, Serial1/2
R4#ping 192.168.8.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.8.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/91/124 ms
配置完全末梢区域：
R3(config)#router ospf 223
R3(config-router)#area 2 stub no-summary
R4#show ip route
C 192.168.4.0/24 is directly connected, Serial1/2
C 192.168.5.0/24 is directly connected, Loopback1
O*IA 0.0.0.0/0 [110/65] via 192.168.4.1, 00:02:58, Serial1/2