在路由器上配置Track-实现静态路由器的冗余

在路由器上配置Track，实现静态路由器的冗余一、本文目的静态路由+Track，实现路由的冗余切换二、技术简介静态路由：管理员手工填写，管理距离为1或0(静态路由下一跳为接口的情况下)Track：追踪技术IP SLA:IP 服务等级，通过该技术测试网络连通性三、实验环境模拟器：GNS3路由器：unzip-c3725-adventerprisek9-mz.124-15.T5.bin四、网络拓扑五、环境要求.在路由器访问对端lo1接口默认走上面的链路，当上面的链路出问题时，切换到下面的链路.在路由器访问对端lo2接口默认走下面的链路，当下面的链路出问题时，切换到上面的链路六、网络配置R1：track 1 rtr 1 reachability /跟踪路由可靠性track 2 rtr 2 reachabilityinterface Loopback1ip address interface Loopback2ip address 255.255.255.interface FastEthernet0/0ip address 7 52interface FastEthernet0/1ip address 9 52ip route 8 track 1 /在此路由后面跟track，如果trackdown了，此路由失效，因为路由器会选择备份的路由ip route 0 track 2ip route 0 10 /配置管理距离为10，使该路由作为备份路由，当track的主路由失败后，则选择这个路由ip route 8 10ip sla 1 /配置SLA，根据icmp来判断链路是否可靠icmp-echo 8 source-ip 7ip sla schedule 1 life forever start-time now /配置schedule,是SLA立即生效，有效期为永远ip sla 2icmp-echo 0 source-interface FastEthernet0/1ip sla schedule 2 life forever start-time nowR2：track 1 rtr 1 reachabilitytrack 2 rtr 2 reachabilityinterface Loopback1ip address interface Loopback2ip address interface FastEthernet0/0ip address 8 52interface FastEthernet0/1ip address 0 52ip route 7 track 1ip route 9 track 2ip route 9 10ip route 7 10ip sla 1icmp-echo 7 source-ip 8ip sla schedule 1 life forever start-time nowip sla 2icmp-echo 9 source-interface FastEthernet0/1ip sla schedule 2 life forever start-time now七、验证R2#sho track briefTrack Object Parameter Value Last Change1 rtr 1 reachability Up 00:00:372 rtr 2 reachability Up 01:10:57R2#sho trackTrack 1Response Time Reporter 1 reachabilityReachability is Up8 changes, last change 00:01:58Latest operation return code: OKLatest RTT (millisecs) 32Tracked by:STATIC-IP-ROUTING 0Track 2Response Time Reporter 2 reachabilityReachability is Up8 changes, last change 01:12:18Latest