思科Eigrp split.docx

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1、思科Eigrpsplitcisco公司已成为公认的全世界网络互联解决方案的领先厂商，该公司出产的一系列路由器更是引领世界，那么你知道思科Eigrpsplit-horizon丢失路由分析吗?下面是学习啦我整理的一些关于思科Eigrpsplit-horizon丢失路由分析的相关资料，供你参考。思科Eigrpsplit-horizon丢失路由分析：我们测试的网络类型是帧中继(HUB-SPOKE)，R1分别与R2和R3建立frame映射，R1为hub端，2，3分别为spoke端。R2只与R1建立映射,R3也只与R1建立映射。R2-R1-R3配置帧中继：R1配置：R1#conftR1(config)#i

2、ntlo0R1(config-if)#ipadd1.1.1.1255.255.255.0R1(config-if)#noshR1(config-if)#ints0/0R1(config-if)#ipadd11.1.1.1255.255.255.0R1(config-if)#encapsulationframe-relayR1(config-if)#noarpframe-relayR1(config-if)#noframeinverse-arpR1(config-if)#framemapip11.1.1.2102broadcastR1(config-if)#framemapip11.1.1.31

3、03broadcast(帧中继的标准配置)R1(config-if)#noshR2配置：R2(config-if)#ints0/0R2(config-if)#ipadd11.1.1.2255.255.255.0R2(config-if)#noshR2(config-if)#encapsulationframe-relayR2(config-if)#noarpframe-relayR2(config-if)#noframeinverse-arpR2(config-if)#framemapip11.1.1.1201broadcastR2(config-if)#noshR3配置：R3(config-

4、if)#ints0/0R3(config-if)#ipadd11.1.1.3255.255.255.0R3(config-if)#encapsulationframe-relayR3(config-if)#noarpframe-relayR3(config-if)#noframeinverse-arpR3(config-if)#framemapip11.1.1.1301broadcastR3(config-if)#nosh查看帧中继建立情况R1#shframemapSerial0/0(up):ip11.1.1.2dlci102(0x66,0x1860),static,broadcast,CIS

5、CO,statusdefined,activeSerial0/0(up):ip11.1.1.3dlci103(0x67,0x1870),static,broadcast,CISCO,statusdefined,activeR2#shframemapSerial0/0(up):ip11.1.1.1dlci201(0xC9,0x3090),static,broadcast,CISCO,statusdefined,activeR3#shframemapSerial0/0(up):ip11.1.1.1dlci301(0x12D,0x48D0),static,broadcast,CISCO,status

6、defined,active已经建立完毕测试连通性：R3#ping11.1.1.1Typeescapesequencetoabort.Sending5,100-byteICMPEchosto11.1.1.1,timeoutis2seconds:!(成功)Successrateis100percent(5/5),round-tripmin/avg/max=48/77/96ms帧中继有水平分割，在rip协议中，帧中继的水平分割默认是被关闭的，在eigrp协议中帧中继的水平分割默认是被打开的可查看R1的S0/0接口R1#shipints0/0Serial0/0isup,lineprotocolisu

7、pInternetaddressis11.1.1.1/24Broadcastaddressis255.255.255.255AddressdeterminedbysetupcommandMTUis1500bytesHelperaddressisnotsetDirectedbroadcastforwardingisdisabledMulticastreservedgroupsjoined:224.0.0.9OutgoingaccesslistisnotsetInboundaccesslistisnotsetProxyARPisenabledLocalProxyARPisdisabledSecur

8、itylevelisdefaultSplithorizonisdisabledICMPredirectsarealwayssentICMPunreachablesarealwayssentICMPmaskrepliesareneversentIPfastswitchingisenabledIPfastswitchingonthesameinterfaceisenabledIPFlowswitchingisdisabled我们分别用rip和eigrp做同样的实验，首先每台路由器启动RIP，通过查看路由表能够发现，R2R3会学到对方的路由。R2#shiproute1.0.0.0/24issubne

9、tted,1subnetsR1.1.1.0120/1via11.1.1.1,00:00:04,Serial0/02.0.0.0/24issubnetted,1subnetsC2.2.2.0isdirectlyconnected,Loopback03.0.0.0/24issubnetted,1subnetsR3.3.3.0120/2via11.1.1.3,00:00:04,Serial0/011.0.0.0/24issubnetted,1subnetsC11.1.1.0isdirectlyconnected,Serial0/0能够看到3.3.3.0的路由R3#shiproute1.0.0.0/2

10、4issubnetted,1subnetsR1.1.1.0120/1via11.1.1.1,00:00:06,Serial0/02.0.0.0/24issubnetted,1subnetsR2.2.2.0120/2via11.1.1.2,00:00:06,Serial0/03.0.0.0/24issubnetted,1subnetsC3.3.3.0isdirectlyconnected,Loopback011.0.0.0/24issubnetted,1subnetsC11.1.1.0isdirectlyconnected,Serial0/0能够看到有2.2.2.0的路由如今去掉RIP启动EIG

11、RP再查看结果：R1(config)#norouterripR1(config)#routerei100R1(config-router)#noauR1(config-router)#net1.1.1.00.0.0.255R1(config-router)#net11.1.1.00.0.0.255R2(config)#norouterripR2(config)#routerei100R2(config-router)#noauR2(config-router)#net2.2.2.00.0.0.255R2(config-router)#net11.1.1.00.0.0.255R3(config)#norouterripR3(config)#routerei100R3(config-router)#noauR3(config-router)#net3.3.3.00.0.0.255R3(config-router)#net11.1.1.00.0.0.255