hsrp监视端口配置

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1、BasicHSRPConfigurationWithTrackInterface关键字HSRPVRRP热备份冗余端口追踪拓朴实验说明　某企业为实现用户24小时不间断上网业务,使用两台路由器进行热备(HSRP).　企业PC只需网关设定为HSRP指定的网关(192.168.0.100)即可.　如果R2的连接互联网的接口发生问题，则将HSRPActive切向R1.[HRSP监视端口功能]配置R1的配置!hostnameR1!interfaceFastEthernet0/0ipaddress192.168.0.1255.255.255.0duplexhalfstandby1ip192.16

2、8.0.100//HSRP虚拟网关standby1preempt! R2的配置!hostnameR2!interfaceFastEthernet0/0ipaddress192.168.0.2255.255.255.0duplexhalfstandby1ip192.168.0.100standby1priority120standby1preemptstandby1trackSerial3/030//监视S3/0接口,如果接口down,优先级值减30!调试 在R2上查看HSRP状态R2#showstandbyFastEthernet0/0-Group1StateisActive　4s

3、tatechanges,laststatechange00:00:37　VirtualIPaddressis192.168.0.100　ActivevirtualMACaddressis0000.0c07.ac01LocalvirtualMACaddressis0000.0c07.ac01(default)　Hellotime3sec,holdtime10sec　Nexthellosentin1.856secs　　PreemptionenabledActiverouterislocal　Standbyrouteris192.168.0.1,priority100(expiresin

4、9.992sec)　Priority120(configured120)　　TrackinterfaceSerial3/0stateUpdecrement30　IPredundancynameis"hsrp-Fa0/0-1"(default)现在我们在R2上关闭S3/0接口，模拟此互联网接口发生故障R2#conftEnterconfigurationcommands,oneperline.EndwithCNTL/Z.R2(config)#ints3/0R2(config-if)#shR2#*Feb2200:49:37.743:%SYS-5-CONFIG_I:Configuredfr

5、omconsolebyconsole*Feb2200:49:38.551:%LINK-5-CHANGED:InterfaceSerial3/0,changedstatetoadministrativelydown*Feb2200:49:38.575:%HSRP-5-STATECHANGE:FastEthernet0/0Grp1stateActive->Speak*Feb2200:49:39.551:%LINEPROTO-5-UPDOWN:LineprotocolonInterfaceSerial3/0,changedstatetodownR2#showstandbyFastEthe

6、rnet0/0-Group1StateisStandby//现在变为Standby状态了　6statechanges,laststatechange00:00:00　VirtualIPaddressis192.168.0.100　ActivevirtualMACaddressis0000.0c07.ac01LocalvirtualMACaddressis0000.0c07.ac01(default)　Hellotime3sec,holdtime10sec　Nexthellosentin2.348secs　PreemptionenabledActiverouteris192.168.

7、0.1,priority100(expiresin8.576sec)　Standbyrouterislocal　Priority90(configured120)　TrackinterfaceSerial3/0stateDowndecrement30　IPredundancynameis"hsrp-Fa0/0-1"(default)再将S3/0接口打开，我们可以观察到R2又得到了Active状态R2#conftEnterconfigurationcommands,on