实验 26 配置多区域的 is

172.16.255.14/30-172.戚如一IV30b1，°CAfiJQB0C0000l丘花日W30172.16.255.14/30-172.戚如一IV30b1，°CAfiJQB0C0000l丘花日W30实验目的：1、掌握基本的IS-IS路由协议配置。2、理解L1/L2类型路由。3、掌握IS-IS区域汇总的配置。Area49.000317?.l«.128.1/24IT2.I&1网・1/24Area490002实验步骤及要求：1、配置各台路由器的IP地址，并且使用Ping命令确认各路由器的直连口的互通性。2、各台路由器的IS-IS配置如下。指定此接口发送level-1的路由报文。默认情况下：IS-IS的Level-1-2的路由器，会向所有接口中发送Level-1和Level-2的报文。通过此条命令可以修剪掉不必要的报文发送。R1(config)#intLo0R1(config-if)#ipaddress172.16.1.1255.255.255.0R1(config-if)#iprouterisisciscoR1(config-if)#isiscircuit-typelevel-1R1(config-if)#exitR1(config)#intLo1R1(config-if)#ipaddress172.16.2.1255.255.255.0R1(config-if)#iprouterisisciscoR1(config-if)#isiscircuit-typelevel-1R1(config-if)#exitR1(config)#intS1/1R1(config-if)#ipaddress172.16.255.1255.255.255.252R1(config-if)#iprouterisisciscoR1(config-if)#isiscircuit-typelevel-2-only//指定s1/1发送level-2的报文R1(config-if)#exitR1(config)#routerisisciscoR1(config-if)#net49.0001.ca00.0bbc.0000.00R2(config)#intS1/0R2(config-if)#ipaddress172.16.255.2255.255.255.252R2(config-if)#iprouterisisciscoR2(config-if)#isiscircuit-typelevel-2-onlyR2(config-if)#exitR2(config)#intS1/1R2(config-if)#ipaddress172.16.255.5255.255.255.252R2(config-if)#iprouterisisciscoR2(config-if)#exit

R2(config)#routerisisciscoR2(config-if)#net49.0002.ca01.0bbc.0000.00R3(config)#intS1/0R3(config-if)#ipaddress172.16.255.6255.255.255.252R3(config-if)#iprouterisisciscoR3(config-if)#exitR3(config-if)#intS1/1R3(config-if)#ipaddress172.16.255.9255.255.255.252R3(config-if)#iprouterisisciscoR3(config-if)#isiscircuit-typelevel-2-onlyR3(config-if)#exitR3(config-if)#routerisisciscoR3(config-if)#net49.0002.ca02.0bbc.0000.00R3(config-if)#exitR4(config)#ints1/0R4(config-if)#ipaddress172.16.255.10255.255.255.252R4(config-if)#iprouterisisciscoR4(config-if)#isiscircuit-typelevel-2-onlyR4(config-if)#exitR4(config-if)#intS1/1R4(config-if)#ipaddress172.16.255.13255.255.255.252R4(config-if)#iprouterisisciscoR4(config-if)#isiscircuit-typelevel-1R4(config-if)#exitR4(config-if)#routerisisciscoR4(config-if)#net49.0003.ca03.0bbc.0000.00R4(config)#exitR5(config)#intLo0R5(config-if)#ipaddress172.16.128.1255.255.255.0R5(config-if)#iprouterisisciscoR5(config-if)#isiscircuit-typelevel-1〃如果路由器被指定为level-1，则此条命令可以被省略R5(config-if)#exitR5(config-if)#intLo1R5(config-if)#ipaddress172.16.129.1255.255.255.0R5(config-if)#iprouterisisciscoR5(config-if)#exitR5(config-if)#intS1/0R5(config-if)#ipaddress172.16.255.14255.255.255.252R5(config-if)#iprouterisisciscoR5(config-if)#exitR5(config-if)#routerisisciscoR5(config-if)#net49.0003.ca04.0bbc.0000.00指定此接口发送level-1的路由报文。默认情况下：IS-IS的Level-1-2的路由器，会向所有接口中发送Level-1和Level-2的报文。通过此条命令可以修剪掉不必要的报文发送。R2#showisisneighborsSystemIdTypeInterfaceIPAddressR3R1R3#showisisSystemIdR2R4R3#R4#showisisSystemIdL1L2Se1/1172.16.255.6L2Se1/0172.16.255.1neighborsTypeInterfaceIPAddressL1L2Se1/0L2Se1/1StateHoldtimeCircuitIdUP2901〃与R1创建L1/L2类型邻居UP2300〃与R3创建L2类型邻居StateHoldtimeCircuitId172.16.255.5UP172.16.255.10UP25270100neighborsTypeInterfaceIPAddressSe1/0172.16.255.9UP23Se1/1172.16.255.14UP22的路由表，观察其区别：R3L2R5L15、查看R1与R5R1#showiproute172.16.0.0/16isvariablysubnetted,8subnets,2masksiL2172.16.128.0/24[115/50]via172.16.255.2,Serial1/1iL2172.16.129.0/24[115/50]via172.16.255.2,Serial1/1StateHoldtimeCircuitId0000C172.16.255.0/30isdirectlyconnected,Serial1/1iL2172.16.255.4/30[115/20]via172.16.255.2,Serial1/1iL2172.16.255.8/30[115/30]via172.16.255.2,Serial1/1iL2172.16.255.12/30[115/40]via172.16.255.2,Serial1/1C172.16.1.0/24isdirectlyconnected,Loopback0C172.16.2.0/24isdirectlyconnected,Loopback1R1#showisisdatabaseIS-ISLevel-1LinkStateDatabase:由于R1是L1/L2类型的路由器，所以R1能够学习到L2的其它区域的路。同时，如果查看R1链路状态数据库。会发现R1同时维护了L1和L2的数据库。LSPIDLSPSeqNumLSPChecksumLSPHoldtimeATT/P/OLR1.00-00*0X0000000B0xD33B6791/0/0IS-ISLevel-2LinkStateDatabase:LSPIDLSPSeqNumLSPChecksumLSPHoldtimeATT/P/OLR1.00-00*0X0000000E0xCC4D7360/0/0R2.00-000x000000130xA2974270/0/0R3.00-000X0000000F0x65C810970/0/0R4.00-000x000000110x4B418180/0/0R5#showiprouteGatewayoflastresortis172.16.255.13tonetwork0.0.0.0172.16.0.0/16isvariablysubnetted,3subnets,2masks172.16.128.0/24isdirectlyconnected,Loopback0172.16.129.0/24isdirectlyconnected,Loopback1172.16.255.12/30isdirectlyconnected,Serial1/0CCCi*L10.0.0.0/0[115/10]via172.16.255.13,Serial1/0由于R5是Level-1的路由器，其处在Area49.0003区域内部。因此其会接到R4路由器发送的L1类型的默认路由。这样做的优点是：能够有效的减少路由表的大小，增强了IS-IS的稳定性。其做法类似于OSPF的完全末节区域(TotallyStub)R5#showisisdatabase//R5路由仅有L1的数据库IS-ISLevel-1LinkStateDatabase:LSPIDLSPSeqNumLSPChecksumR4.00-000X0000000CR5.00-00*0x0000000D6、使用ping命令确认路由：R1#ping172.16.129.1!!!!!7、为了能够更有效的减小路由表的大小，还可以配置IS-IS的汇总。首先查看R4的路由表:R4#showiproute172.16.0.0/16isvariablysubnetted,8subnets,2masks172.16.128.0/24[115/20]via172.16.255.14,Serial1/1172.16.129.0/24[115/20]via172.16.255.14,Serial1/1172.16.255.0/30[115/30]via172.16.255.9,Serial1/0172.16.255.4/30[115/20]via172.16.255.9,Serial1/0172.16.255.8/30isdirectlyconnected,Serial1/0172.16.255.12/30isdirectlyconnected,Serial1/1172.16.1.0/24[115/40]via172.16.255.9,Serial1/0172.16.2.0/24[115/40]via172.16.255.9,Serial1/00x7BA10xF411LSPHoldtime770649ATT/P/OL1/0/00/0/0iL1iL1iL2iL2CCiL2iL2//配置汇总对此路由进行总结8、在R1上配置地址总结：R1(config)#routerisisciscoR1(config-router)#summary-address172.16.0.0255.255.128.09、再次查看R4的路由表：R4#showiproute172.16.0.0/16isvariablysubnetted,7subnets,3masks172.16.128.0/24[115/20]via172.16.255.14,Serial1/1172.16.129.0/24[115/20]via172.16.255.14,Serial1/1172.16.255.0/30[115/30]via172.16.255.9,Serial1/0172.16.255.4/30[