《glbp基础配置》word版

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1、所用运行GLBP的设备默认都是一个AVF。每三秒发一次Hello包，发送地址为224.0.0.102，使用UDP端口3222，通过Hello选举AVG。AVG去定义MAC地址，为每个设备定义一个虚MAC地址。AVG回应ARP的请求报，为请求者分发虚MAC地址。如果某个设备的上行链路出错，则通过Hello移交数据包的虚MAC给另一个设备。AVF的转发负载比率可以通过weighting参数进行设置，weighting值默认为100，每次出错weighting值默认减少10，减到最低时该设备将不会成为AVF①基本配置：interfaceFastEthernet

2、1/14noswitchportipaddress100.1.1.2255.255.255.0glbp1ip100.1.1.1glbp1priority110glbp1preempt查看：SW1#shoglbpbriefInterfaceGrpFwdPriStateAddressActiverouterStandbyrouteFa1/141-110Active100.1.1.1local100.1.1.3Fa1/14117Active0007.b400.0101local-Fa1/14127Listen0007.b400.0102100.1.1.3-②追

3、踪路由：track1iproute0.0.0.00.0.0.0reachabilityinterfaceFastEthernet1/14noswitchportipaddress100.1.1.2255.255.255.0glbp1ip100.1.1.1glbp1priority110glbp1preemptglbp1weightingtrack1decrement20③调整权重范围：interfaceFastEthernet1/14noswitchportipaddress100.1.1.2255.255.255.0glbp1ip100.1.1.1gl

4、bp1priority110glbp1preemptglbp1weighting110lower91upper105初始值110，低于90失去AVF资格，大于105恢复AVF资格glbp1weightingtrack1decrement20④GLBP认证：interfaceFastEthernet1/14noswitchportipaddress100.1.1.2255.255.255.0glbp1ip100.1.1.1glbp1priority110glbp1preemptglbp1weighting100lower90glbp1authenticat

5、ionmd5key-stringciscoglbp1weightingtrack1decrement20查看：SW1#shoglbpFastEthernet1/14-Group1StateisActive6statechanges,laststatechange00:01:55VirtualIPaddressis100.1.1.1Hellotime3sec,holdtime10secNexthellosentin2.388secsRedirecttime600sec,forwardertime-out14400secAuthenticationMD5,k

6、ey-string"cisco"Preemptionenabled,mindelay0secActiveislocalStandbyis100.1.1.3,priority100(expiresin6.780sec)Priority110(configured)Weighting80,low(configured100),thresholds:lower90,upper100Trackobject1stateDowndecrement20Loadbalancing:round-robinGroupmembers:cc08.0c88.f10e(100.1.

7、1.2)localcc09.0c88.f10e(100.1.1.3)authenticatedThereare2forwarders(0active)Forwarder1StateisListen8statechanges,laststatechange00:00:18MACaddressis0007.b400.0101(default)OwnerIDiscc08.0c88.f10eRedirectionenabledPreemptionenabled,mindelay30secActiveis100.1.1.3(secondary),weighting

8、100(expiresin6.616sec)Forwarder2StateisL