ospf 实验报告
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OSPF单区域配置实验报告实验目的：
1.Ospf实现全网互通
2.分析ospf路由
3.分析cost的作用
实验拓扑图：
实验步骤：
1.全网配置IP地址，开启ospf路由协议，公布所有网段，实现单区域全网互通。
Router>en
Router#conf t
Router(config)#interface s1/1
Router(config-if)#clock rate 64000
Router(config-if)#ip address 20.20.20.2 255.255.255.0
Router(config-if)#no shutdown
Router(config)#int s1/0
Router(config-if)#clock rate 64000
Router(config-if)#ip address 30.30.30.1 255.255.255.0
o shuRouter(config-if)#no shutdown
Router>en
Router#conf t
Router(config)#interface s1/1
Router(config-if)#ip address 30.30.30.2 255.255.255.0
Router(config-if)#no shutdown
Router(config)#interface s1/0
Router(config-if)#clock rate 64000
Router(config-if)#ip address 40.40.40.1 255.255.255.0
Router(config-if)#no shutdown
Router>en
Router#conf t
Router(config)#interface f0/1
Router(config-if)#ip address 10.10.10.254 255.255.255.0 Router(config-if)#no shutdown
Router(config-if)#int s1/2
Router(config-if)#ip address 20.20.20.1 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#int f0/0
Router(config-if)#ip address 50.50.50.1 255.255.255.0
Router(config-if)#no shutdown
Router>en
Router#conf t
Router(config)#interface f0/1
Router(config-if)#ip address 50.50.50.2 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#int s1/0
Router(config-if)#ip address 40.40.40.2 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#int f0/0
Router(config-if)#ip address 60.60.60.254 255.255.255.0 Router(config-if)#no shutdown
Router(config)#router ospf 100
Router(config-router)#router-id 3.3.3.3
Router(config-router)#network 10.10.10.0 0.0.0.255 area 0 Router(config-router)#network 50.50.50.0 0.0.0.255 area 0 Router(config-router)#network 20.20.20.0 0.0.0.255 area 0 Router(config)#router ospf 100
Router(config-router)#router-id 1.1.1.1
Router(config-router)#network 20.20.20.0 0.0.0.255 area 0 Router(config-router)#network 30.30.30.0 0.0.0.255 area 0 Router(config)#router ospf 100
Router(config-router)#router-id 2.2.2.2
Router(config-router)#network 30.30.30.0 0.0.0.255 area 0
Router(config-router)#network 40.40.40.0 0.0.0.255 area 0
Router(config)#router ospf 100
Router(config-router)#router-id 4.4.4.4
Router(config-router)#network 40.40.40.0 0.0.0.255 area 0
Router(config-router)#network 50.50.50.0 0.0.0.255 area 0
Router(config-router)#network 60.60.60..0 0.0.0.255 area 0
至此，全网互通！！！
2.分析RT3去往60.60.60.0/24的路由
Router#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, 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
10.0.0.0/24 is subnetted, 1 subnets
C 10.10.10.0 is directly connected, FastEthernet0/1
20.0.0.0/24 is subnetted, 1 subnets
C 20.20.20.0 is directly connected, Serial1/0
30.0.0.0/24 is subnetted, 1 subnets
O 30.30.30.0 [110/128] via 20.20.20.1, 00:06:33, Serial1/0
40.0.0.0/24 is subnetted, 1 subnets
O 40.40.40.0 [110/65] via 50.50.50.4, 00:03:49, FastEthernet0/0
50.0.0.0/24 is subnetted, 1 subnets
C 50.50.50.0 is directly connected, FastEthernet0/0
60.0.0.0/24 is subnetted, 1 subnets
O 60.60.60.0 [110/2] via 50.50.50.4, 00:03:39, FastEthernet0/0
分析得出R3上去往60.60.60.0/24的下一跳为50.50.50.4.，路径为R3-R4
3、当人为将RT3 f0/0端口 shutdown，再检查RT3 路由表去往60.60.60.0/24的路由。并且比较之前路由区别在哪里！
Router#show ip route