静态路由的参数Track.docx

永久存在路由表中的静态路由环境如图：实验目的：使用Track参数，将静态路由有条件的存放在路由表中。说明：要陪着Track参数，首先要使用命令：Track建立一个跟踪表。然后再往路由表里添加静态路由基本设置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)#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 12.0.0.0/24 is subnetted, 1 subnetsC 12.12.12.0 is directly connected, Serial1/2R2r2#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创建一个跟踪列表r1(config)#track 1 interface loopback 0 ip routing r1(config-track)#exitr1(config)#exit 显示跟踪列表r1#show trackTrack 1 Interface Loopback0 ip routing IP routing is Up 1 change, last change 00:01:17向路由器R1添加有条件静态路由r1#configure terminal r1(config)#ip route 2.2.2.0 255.255.255.0 12.12.12.2 track 1r1(config)#exit显示路由表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 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路由条目被添加进了路由表。Ping测试r1#ping 2.2.2.2Type 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 = 12/109/196 ms通过r1#ping 2.2.2.2 source 1.1.1.1Type 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 = 32/112/224 ms通过由于包含地址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已经在路由表中，因此可以正常通信。测试停止Loopback0后的结果r1#configure terminal r1(config)#interface loopback 0r1(config-if)#shutdown r1(config-if)#exitr1(config)#exit显示路由表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 resort is not set 12.0.0.0/24 is subnetted, 1 subnetsC 12.12.12.0 is directly connected, Serial1/2Loopback0并不是R1访问2.2.2.0网段的出口。但是由于loopback0被Shutdown了，造成了路由表中包含有2.2.2.