修改静态路由的管理距离.docx

修改静态路由的管理距离环境如图：实验目的，使用静态路由命令的参数，修改静态路由的管理距离。基本设置R1RouterenRouter#configure terminal Router(config)#hostname r1r1(config)#interface serial 1/2r1(config-if)#ip address 12.12.12.1 255.255.255.0r1(config-if)#no shutdown r1(config-if)#exitr1(config)#interface loopback 0r1(config-if)#ip address 1.1.1.1 255.255.255.0r1(config-if)#no shutdown r1(config-if)#exitr1(config)#ip route 2.2.2.0 255.255.255.0 12.12.12.2r1(config)#exitR2RouterenRouter#configure terminal Router(config)#hostname r2r2(config)#interface serial 1/3r2(config-if)#ip address 12.12.12.2 255.255.255.0r2(config-if)#no shutdown r2(config-if)#exitr2(config)#interface loopback 0r2(config-if)#ip address 2.2.2.2 255.255.255.0r2(config-if)#no shutdown r2(config-if)#exitr2(config)#ip route 1.1.1.0 255.255.255.0 12.12.12.1r2(config)#exit查看路由表R1r1#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnetsS 2.2.2.0 1/0 via 12.12.12.2 12.0.0.0/24 is subnetted, 1 subnetsC 12.12.12.0 is directly connected, Serial1/2显然包含2.2.2.2的路由条目 2.0.0.0/24 is subnetted, 1 subnetsS 2.2.2.0 1/0 via 12.12.12.2在R1的路由表里面R2r2#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsS 1.1.1.0 1/0 via 12.12.12.1 2.0.0.0/24 is subnetted, 1 subnetsC 2.2.2.0 is directly connected, Loopback0 12.0.0.0/24 is subnetted, 1 subnetsC 12.12.12.0 is directly connected, Serial1/3包含1.1.1.1的路由条目 1.0.0.0/24 is subnetted, 1 subnetsS 1.1.1.0 1/0 via 12.12.12.1在R2的路由表里面Ping测试执行命令r1#ping 2.2.2.2可以连通Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:!Success rate is 100 percent (5/5), round-trip min/avg/max = 48/116/256 ms执行命令r1#ping 2.2.2.2 source 1.1.1.1可以连通Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:Packet sent with a source address of 1.1.1.1 !Success rate is 100 percent (5/5), round-trip min/avg/max = 32/106/204 ms由于两个路由器的路由表中的两条静态路由都正常工作。因此连通性良好。将静态路由的管理距离改为2执行命令r1#configure terminal r1(config)#no ip route 2.2.2.0 255.255.255.0 12.12.12.2r1(config)#ip route 2.2.2.0 255.255.255.0 12.12.12.2 2r1(config)#exit查看路由表r1#show ip route结果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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnetsS 2.2.2.0 2/0 via 12.12.12.2 12.0.0.0/24 is subnetted, 1 subnetsC 12.12.12.0 is directly connected, Serial1/2可以看见静态路由的管理距离变成了2之前的静态路由是： 2.0.0.0/24 is subnetted, 1 subnetsS 2.2.2.0 1/0 via 12.12.12.2现在的静态路由是： 2.0.0.0/24 is subnetted, 1 subnetsS 2.2.2.0 2/0 via 12.12.12.2将静态路由的管理距离改成255执行命令r1#configure terminal r1(config)#no ip route 2.2.2.0 255.255.255.0 12.12.12.2 2r1(config)#ip route 2.2.2.0 255.255.255.0 12.12.12.2 255r1(config)#exit查看路由表r1#show ip routeCodes: 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 routeGateway of last resor