在路由器上配置Track,实现静态路由器的冗余

1、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IPSLA: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.l24-15.T5.bin四、网络拓扑五、环境要求.在路由器访问对端lol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：track1

2、rtr1reachability/跟踪路由可靠性track2rtr2reachabilityinterfaceLoopback1ipaddressinterfaceLerfaceFastEthernet0/0ipaddress752interfaceFastEthernet0/1ipaddress952iproute

3、8track1/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iproute0track2iproute010/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iproute810ipsla1配置SLA，根据icmp来判断链路是否可靠icmp-echo8source-ip7ipslasc

4、hedule1lifeforeverstart-timenow配置schedule,是SLA立即生效，有效期为永远ipsla2icmp-echo0source-interfaceFastEthernet0/1ipslaschedule2lifeforeverstart-timenowR2：track1rtr1reachabilitytrack2rtr2reachabilityinterfaceLoopback1ipaddressinterfaceLoopback2ipaddressint

5、erfaceFastEthernet0/0ipaddress852interfaceFastEthernet0/1ipaddress052iproute7track1iproute9track2iproute910iproute710ipsla1icm

6、p-echo7source-ip8ipslaschedule1lifeforeverstart-timenowipsla2icmp-echo9source-interfaceFastEthernet0/1ipslaschedule2lifeforeverstart-timenow七、验证R2#shotrackbriefTrackObjectParameterValueLastChange1rtr1reachabilityUp00:00:372rtr2reachabilityUp01:10:57R2#shotrackTrack1Resp

7、onseTimeReporter1reachabilityReachabilityisUp8changes,lastchange00:01:58Latestoperationreturncode:OKLatestRTT(millisecs)32Trackedby:STATIC-IP-ROUTING0Track2ResponseTimeReporter2reachabilityReachabilityisUp8changes,lastchange01:12:18Latestoperationreturncode:OKLatestRTT(millisecs)20Trackedby:STATIC-I

8、P-ROUTING0可以在R1在配置denyACL测试（具体操作不在表述），测试结果如下：+aaFI4|!I1kI4BI-IfallfcIIFII-II1iIrltIdFIIIlifHI-lTlIfl-lFBIfillhIiiniiiiirininiiiniHiiiiunii!inii|iiiniini|iHi|iii!iHiiiH|Aidi4fi4ca-baaa4fi-rihifcinn-i-4itt-iiaifiii-fca-i-Ffl-Fa-itaaiii*haaiah+iiHiniHiHinnnifniHiHHiiin+11FaHI4hl4ll4li-lil-l*Nar103:02:10.791:STRACKING-5-STATE:1rtr1reachabilityUpoDown!niHHiHinuiiiiniiHniiiHiHtiniHiFiHiiiHiHiiHrnnHini+IFI4b41-14t4h-IfellFI-4I-IfcilFI-I+FIHI4BI4IdI4b