ospf完全实验手册v11 0 kevin大侠命令与配置

PAGEPAGE2实验1-1routerospfprocess- 实验1-2routerospfprocess-idvrf 实验2-1areaarea-id 实验2-2areaarea-idauthenticationmessage- 实验2-3areaarea-iddefault-cost 实验2-4areaarea-id 实验2-5areaarea-idnssadefault-information- 实验2-6areaarea-idnssano- 实验2-7areaarea-idnssano- 实验2-8areaarea-idrangeip-address 实验2-9areaarea-idrangeip-addressmask 实验2-10areaarea-idrangeip-addressmasknot- 实验2-11areaarea-id 实验2-12areaarea-idstubno- 实验2-13areatransit-area-idvirtual-linkrouter- 实验2-14areatransit-area-idvirtual-linkrouter-iddead-interval 实验2-15areatransit-area-idvirtual-linkrouter-idhello-interval 实验2-16areatransit-area-idvirtual-linkrouter-idretransmit-interval 实验2-17areatransit-area-idvirtual-linkrouter-idtransmit-delay 实验2-18areatransit-area-idvirtual-linkrouter-idauthentication 实验3-1auto-costreference-bandwidth 实验4-1default-information 实验4-2default-informationoriginate 实验4-3default-informationoriginatemetric 实验4-4default-informationoriginatealwaysmetric default-informationoriginatemetric-type default-informationoriginatealwaysmetric-type default-informationoriginateroute-maproute-map- 实验5-1default-metric 实验6-1distanceadministrative- 6-3distanceadministrative-distancesource-ip-addresssource-ip-maskaccess-list- 实验6-4distanceospfexternaladministrative- 实验6-5distanceospfinter-areaadministrative- 实验6-6distanceospfintra-areaadministrative- 实验7-1distribute-listaccess-list-number distribute-listaccess-list-name distribute-listprefixprefix-list-name 实验7-2distribute-listaccess-list-numberininterface-typeinterface- distribute-listaccess-list-nameininterface-typeinterface- distribute-listprefixprefix-list-nameininterface-typeinterface- distribute-listaccess-list-number distribute-listaccess-list-numberoutinterface-typeinterface- distribute-listaccess-list-name distribute-listaccess-list-nameoutinterface-typeinterface- distribute-listprefixprefix-list-name distribute-listprefixprefix-list-nameoutinterface-typeinterface- 实验7-3distribute-listaccess-list-numberoutrouting- distribute-listaccess-list-nameoutrouting- distribute-listprefixprefix-list-nameoutrouting- 实验8ignorelsa logadjacency-changes 实验10maximum-pathsnumber-of- 实验11-1neighborip- 实验11-2neighborip-addresscost 实验11-3neighborip-addressdatabase-filterall 实验11-4neighborip-addresspoll-interval 实验11-5neighborip-addresspriority 实验12-1networkip-addresswild-card-maskareaarea- 实验13-1passive-interfaceinterface-nameinterface- 实验13-2passive-interface redistributerouting-processprocess-idmetricospf- redistributerouting-processprocess-idmetric-typemetric- redistributerouting-processprocess-id redistributerouting-processprocess-idtagtag- 实验14-2redistributerouting-processprocess-idroute-maproute-map- 实验15-1router-idip- summary-addressip-address summary-addressip-addressmasknot- 实验16-2summary-addressip-addressmasktag 实验17-1timerslsa-group-pacing 实验17-2timersspfdelay 实验18-1traffic-shareminacross- 实验19-1ipospf 实验19-2ipospfauthenticationauthentication-key 实验19-3ipospfauthenticationmessage- 实验19-4ipospfmessage-digest-keykey-idmd5 实验19-5ipospfauthentication 实验19-6ipospfcost ipospfdead-interval ipospfhello-interval ipospfretransmit-interval ipospftransmit-delay 实验19-8ipospfdemand- 实验19-9ipospfflood- 实验19-10ipospfmtu- 实验19-11ipospfnetwork ipospfnetworknon- ipospfnetworkpoint-to- ipospfnetworkpoint-to-multipointnon- 实验19-15ipospfnetworkpoint-to- 实验19-16ipospfpriority 1-1routerospfprocess-PAGEPAGE51IPBrouterospfx2A/BIPBOSPFshowipospfRID2、RID没有手工配置的情况下，路由器会在loopback地址中选最高的那个IP地址作为RIDloopbackIPRID3OSPFRID使用的接口状态是不活动的，RID将不会改变。1-2routerospfprocess-idvrfPAGEPAGE6process-id—OSPFID1IP路由表里。2-1areaarea-idPAGEPAGE72OSPF3、检查一下邻居关系showipospf4showip5A/B/C上增加简单认证功能I：router命令模式下area0authenticationIIipospfauthentication-keyxxx6、验证一下邻居是否还存在？showipospf70showipservicepassword-encryptionAdebugipospfevents看看发生了什么事？2-2areaarea-idauthenticationmessage-PAGEPAGE82、检查一下邻居关系showipospf3showip4A/B/CMD5I：routerarea0authenticationmessage-IIkeypassword：ipospfmessage-digest-keyxmd5（注意：比如，ACkey1，A-Bkey2，B-Ckey3）5、验证一下邻居是否还存在？showipospfneighbor60MD5showip7ABkeypasswordA的邻居是否showipospfinterfaces0/1keydebugipospfevents看看发生了什么事？keykeynokey9debugBkey2nokey5，A看看邻居关系现在怎么样？在A上用debugipospfevents看看发生了什么事？10Bkey5nokey2Anoarea0authenticationmessage-digestMD5Aipospfauthentication-keyxxxABdebugipospfevents看看发生了什么2-3areaarea-iddefault-costPAGEPAGE93.3.3.3OSPFredistributeconnectedsubnnets3AB1area16ABRarea1default-cost7、验证缺省路由的成本showiprouteshowiproute1。2-4areaarea-id2A和B以及B和C间起OSPFC和D间起RIPv2A上用命令redistributeconnectedsubnnetsCredistributeripsubnetsRIP路由，passive-interfacexxxBRIPDRIP配置noauto-summary（有兴趣的话可以试试用和不用该命令会有什么不同）4BC1NSSA区域。areax5BNSSAshowip（CASBRNSSA7的路由，但是进入骨干区域的时候，又ABR5A5的路由，是不能NSSAABRASBR不会自动产生缺省路由）2-5areaarea-idnssadefault-information-2ABRBarea1nssadefalt-information-originate，注入一条缺省路C上的路由表和之前有什么不同？（没有使用这条命令之前，路由器A5ABRBNSSACA）NSSAABRASBR上。2-6areaarea-idnssano-1、ATotallyStubbyNSSAABRNSSA3ABRarea1nssano-summaryNSSA2-7areaarea-idnssano-redistributeconnectedsubnnetsB上用redistributeeigrp1subnetsRIPCredistributeripsubnetsRIP路由，并用passive-interfacexxxBRIPD、Erouter模noauto-summary（可以看出，BEIGRP05NSSA区域的则是类7的路由）（ABR2-8areaarea-idrangeip-address2-9areaarea-idrangeip-addressmask2-10areaarea-idrangeip-addressmasknot-1、配置好端口和loopback地址，A：lo0 B：lo0 lo1–lo3、ABRarea1range156.26.32.0255.255.255.192（26bit去汇总这四个子masknetwork中的是相反的）2ABRBiproute0.0.0.00.0.0.0Serial03Bloopback1Atraceloopback接口。发现了什么？4Biproute156.26.32.0255.255.255.192Null0Atrace这loopback接口。发现了什么？ABRNull0ABR上（IOS12.XNull0）2-11areaarea-id2OSPFCredistributeconnectedsubnnets3AB41stub区域。area1stubshowip2-12areaarea-idstubno-2ABRarea1stubno-summary12-PAGE13areatransit-area-idvirtual-linkrouter-3Cshowipospf0B：area1virtual-linkC：area1virtual-link4Cshowipospf0的信息吗？6A、B、C上查看路由表。0区域连接到骨干区域。它是作为一种补救方法来使用的。2-PAGE14areatransit-area-idvirtual-linkrouter-dead-interval2BCshowipospfvirtual-linksdeadinterval402-15areatransit-area-idvirtual-linkrouter-hello-interval2BCshowipospfvirtual-linkshellointerval102-16areatransit-area-idvirtual-linkrouter-retransmit-interval2BCshowipospfvirtual-linksretransmitinterval值3Bretransmitinterval6s（5up的？4BB的邻居5hellointervaldeadinterval不同，retransmitinterval2-17areatransit-area-idvirtual-linkrouter-transmit-delay2Btransmitdelay2s（1up的？3BCshowipospfvirtual-linkstransmitdelay值4C路由表14HelloHello包，则authenticationareatransit-area-idvirtual-linkrouter-idauthenticationauthentication-MD5areatransit-area-idvirtual-linkrouter-idauthenticationmessage-areatransit-area-idvirtual-linkrouter-idmessage-digest-keykey-idmd5NULLareatransit-area-idvirtual-linkrouter-idauthentication4BCshowipospfvirtual-6BCMD54、59noBCkey102-13area0authentication、ipospfauthentication-keycisco0为简单密码认证（area0authentication-messagedigestipospfmessage-digest-key1md5cisco两条命令配MD5认证BC之间的虚拟链路。11Bdebugipospfadj（0启用了认证，那么同类型的认证也会自动在虚拟链路上启用。但是此时虚拟NULL认证。13BCNULLA/B/C3-1auto-costreference-bandwidth3showipospfinterface4showinterfacesserial5BCbandwidth646COSTauto-costreference-bandwidth500（100M，即10^8，500M100M51050，如此类推。InterfaceInterfaceOSPF1Fast1Gigabit11OSPFCOST=10^8/10的八次方不够除，所auto-costreference-bandwidth10的八次方提高，从而把成本4-1default-information4-2default-informationoriginate2BB通告缺省路由到区域。default-informationoriginate4-3default-informationoriginatemetric4-4default-informationoriginatealwaysmetric4、修改缺省路由成本值。default-informationoriginatealwaysmetricABRalways参数，ABR上没有缺省路由，它也会产生一条缺省路由并广播到区域内。default-informationoriginatemetric-typedefault-informationoriginatealwaysmetric-type2BASBRA的路由表，type1type2的？default-informationoriginatealwaysmetric-type4Ashowiproute1、ASBR会给缺省路由分配一个表示从ASBR到这路由的成本度量值（缺省是12路由（缺省情况）OSPF区域1，不会变。1ASBR的内部成ASBR设置的路由外部成本（1）1：成本值=1+ASBR的成本，是变化的。2：成本值=1，不变。default-informationoriginateroute-maproute-map-1IPloopbackOSPF（CEIGRPno3BB3.3.3.0/30是否有效这个条件来决定是否重发布缺省路0里面去。default-informationoriginateroute-mapexistaccess-list1permit3.3.3.00.0.0.3route-mapexistpermit10matchipaddress5routemapCloopback3.3.3.0/306B3.3.3.0/30AB有没有发布5-1default-metric0BGPOSPF1OSPF200、default-metricredistribute重发布的路由的度量值。1IPloopbackOSPF（BEIGRP进OSPFCEIGRPnoauto-summary）2AB，BCOSPFEIGRP3B3.3.3.0/24AA中，度4ASBRBdefault-metric1OSPFredistribute命令分配一个度量值，那么redistribute命令分配了的度量值。6-1distanceadministrative-2Aloopback口，使得它被通告出去为/24网络而不是/32ipospfnetworkpoint-to-3AB，BCOSPFEIGRP5BOSPF80。distance6-2distanceadministrative-distancesource-ip-address6-3distanceadministrative-distancesource-ip-addresssource-ip-maskaccess-list-number16-11、2、3、4distance801.1.1.10.0.0.0（OSPFRID，源掩码是相反的）3B3.3.3.0/24这个网络是由左边还是右边学习回来的？41BA3.3.3.0/24这个网络的路由才80access-list。distance801.1.1.10.0.0.0access-list1permit3.3.3.00.0.0.255（全局模式下01016-4distanceospfexternaladministrative-6-5distanceospfinter-areaadministrative-6-6distanceospfintra-areaadministrative-distanceospfintra-area70inter-area60external7-1distribute-listaccess-list-numberdistribute-list1 （router模式下access-list1deny2.2.2.00.0.0.255(全局模式下access-list1deny3.3.3.00.0.0.255(全局模式下)access-list1permitany 5、查看A的路由表，看看情况变成怎么样？7showipaccess-listsaccess-list-distribute-listaccess-list-namedistribute-listfilter-ospfin （router模式下）ipaccess-liststandardfilter-ospf(全局模式下)deny2.2.2.00.0.0.255deny3.3.3.0permitdistribute-listprefixprefix-list-namedistribute-listprefixfilter-ospf ipprefix-listfilter-ospfseq5deny ipprefix-listfilter-ospfseq10deny3.3.3.3/32ipprefix-listfilter-ospfseq15permit7-2distribute-listaccess-list-numberininterface-distribute-list1inSerial0/0（router模式下distribute-list2inSerial0/1（router模式下access-list1deny2.2.2.00.0.0.255(全局模式下配置，下同access-list1deny3.3.3.00.0.0.255access-list1permitanyaccess-list2deny3.3.3.0access-list2deny4.4.4.00.0.0.255access-list2permitany5ALSDB，看看这些被过滤掉的路由，还在里面吗？6showipaccess-listsaccess-list-numberdistribute-listaccess-list-nameininterface-typedistribute-listfilter-ospf1inSerial0/0（router模式下distribute-listfilter-ospf2inSerial0/1（router模式下!ipaccess-liststandardfilter-ospf1(全局模式下配置，下同 2.2.2.0 3.3.3.0permitipaccess-liststandardfilter-ospf2 3.3.3.00.0.0.255 4.4.4.0permitdistribute-listprefixprefix-list-nameininterface-typedistribute-listprefixfilter-ospf1inSerial0/0（router模式下distribute-listprefixfilter-ospf2in!ipprefix-listfilter-ospf1seq5deny ipprefix-listfilter-ospf1seq10deny3.3.3.3/32ipprefix-listfilter-ospf1seq15permit0.0.0.0/0ipprefix-listfilter-ospf2seq5deny3.3.3.3/32ipprefix-listfilter-ospf2seq10deny4.4.4.4/32ipprefix-listfilter-ospf2seq15permit0.0.0.0/0distribute-listaccess-list-numberdistribute-listaccess-list-numberoutinterface-typedistribute-listaccess-list-namedistribute-listaccess-list-nameoutinterface-typeinterface-distribute-listprefixprefix-list-namedistribute-listprefixprefix-list-nameoutinterface-typeout方向的指令，对于距离矢量协议，作用是阻止被访问列表选定的路由广播到邻居LSALSDB计算的。7-3distribute-listaccess-list-numberoutrouting-3、BC过来的路由没有？A4、BLSAshowipospfdatabaseexternal5BEIGRP4.4.4.0/24OSPFLSDBdistribute-list1outeigrp1access-list1permit4.4.4.06、BLSA条目，Adistribute-listaccess-list-nameoutrouting-distribute-listfilter-eigrpouteigrp1（router模式下ipaccess-liststandardfilter- permit4.4.4.0distribute-listprefixprefix-list-nameoutrouting-distribute-listprefixfilter-eigrpouteigrp ipprefix-listfilter-eigrpseq5permit 8ignorelsaOSPF6MOSPFLSA时，路由器会产生一个logadjacency-changesConsoleOSPFclearipospfprocess查看变化2、logadjacency-changesdetailclearipospfprocess查看变化loggingbuffered4096!routerospflog-adjacency-changes10maximum-pathsnumber-of-3Amaximum-paths1AOSPFNBMA网络就像广播网络一样，认为它有广播特性，虽然实际上它没有。所以neighbor（ipospfnetworkxxx）2PingDLCIshowframe-relay3、在A和B上禁止反向ARP，配置IP地址和DLCI的映射。(A)frame-relaymapip10.1.1.2101broadcast（接口模式）(A)noframe-relayinverse-arp 4、列出路由器在用的帧中继DLCI6A上指定邻居。neighbor7、查看一下邻居，建立起来了吗？（AB，也是会建立起来）DR？会吗？为什么？1、配接口，起OSPF协议（loopback分别为区域1、2、3，中间网络为区域0。封装串口0。注意：BC上都有两条映射声明frame-relaymapip10.1.1.1110broadcast（接口模式）frame-relaymapip10.1.1.3110broadcast（接口模式）2DR？interfaceSerial0/0noipaddressencapsulationframe-relayframe-relaylmi-typeansiinterfaceSerial0/0.1point-to-pointipaddress10.1.1.1255.255.255.252frame-relayinterface-dlci101interfaceSerial0/0.2point-to-pointipaddress10.1.1.5frame-relayinterface-dlci2BC（neighbor命令不能在帧中继的点对点接口上使用，你可以试A上使用该命令看看出什么提示？）3AAdebugipospfevents跟踪一下showipospfinterfaceshowipospfinterface5AHELLOipospfhello-interval6AA11-2neighborip-addresscostneighbor10.1.1.1cost11-3neighborip-addressdatabase-filterallISP运营商基于可靠性要求，通常会在一对邻居间配置两条链路，一条做冗余。路由器会在2，ipospfnetworkpoint-to-multipoint2Aneighbor10.1.1.6database-filterall3showipospfneighbor（2也可以用这条接口命令来实现：ipospfdatabase-filterall11-4neighborip-addresspoll-interval1OSPF64K，LIMANSI，指定邻2Pollintervalshowipospfneighbor3Pollinterval90sneighbor10.1.1.2poll-interval11-5neighborip-addresspriority1OSPF64K，LIMANSI，禁止反ARPIPDLCI的映射。2DR？showipospf neighbor10.1.1.1priority3OSPFclearipospf12-1networkip-addresswild-card-maskareaarea-1IPOSPF协议，把接口加进来（IP地址加进来，而0.0.0.0来匹配）2showipospf2、一条命令就搞定：network10.1.0.00.0.255.255area13-1passive-interfaceinterface-nameinterface-1OSPFBGP路由协议。C（BS1BOSPF0，ABloopback12，重发布BGPOSPFredistributebgp1subnetsBBGP协议配置如下：routerbgp1neighbor10.1.1.6remote-as2BS1OSPF3、BS1showipospfinterfaceserial13-2passive-interface路由）B5OSPFA上重发passive-interface命令解决。passive-interfacedefaultOSPFrouterospfpassive-interfacenopassive-interfaceSerial0/1network10.1.0.00.0.255.255area03OSPFshowipospfredistributerouting-processprocess-idmetricospf-metricredistributerouting-processprocess-idmetric-typemetric-typeredistributerouting-processprocess-idsubnetsMetricOSPF的路由的度量值，如不配置，缺省下是：BGP1，20。Metric122的路由。Tag0。3B4BEIGRPredistributeeigrp6BLSDBLSAshowipospfdatabase7BOSPFEIGRPredistributeeigrp1metric9B上改变度量值的类型：redistributeeigrp1metric50metric-type10BLSDBLSAredistributeeigrp1metric66metric-type114BTagredistributeeigrp1metric66metric-type1subnetstagshowiproute showipospfdatabaseexternal114-11、2routerospf （router模式redistributeeigrp1subnetsroute-mapcontrol-access-list1permit6.0.0.0 access-list1permit146.6.0.0access-list1permit206.6.6.0access-list1permit10.1.1.4route-mapcontrol-eigrppermit （route-map模式matchipaddress5B100200route-mapcontrol-eigrppermit10（route-map模式）setmetric200route-mapcontrol-eigrppermit20（route-map模式setmetric7ALSA，如showipospfdatabaseexternalroute-mapcontrol-eigrppermit20（route-map模式setmetric-typetype-10Tag1Tag2。route-mapcontrol-eigrppermit10（route-map模式）settag1route-mapcontrol-eigrppermit20（route-map模式settag11BLSA，如showipospfdatabaseexternal12Ashowiproute206.6.6.0OSPF路由，metric12、B上配置OSPF时，为重发布的路由打上标签，无类路由是1，有类路由是2redistributeeigrp1subnetsroute-mapset-tags（OSPF配置模式）access-list1permit6.0.0.00.15.255.255 access-list1permit146.6.0.0access-list1permit206.6.6.0access-list1permit10.1.1.4route-mapset-tagspermit （route-map模式matchipaddress1settag1route-mapset-tagspermit （route-map模式settag3D的路由表，DA4、修改A的配置，使得只有标签值为1的无类路由才能重发布到RIPv2区域redistributeospf1metric1route-mapcheck-tags（RIP配置模式）route-mapcheck-tagspermit10 （route-map模式）matchtag115-1router-idip-2ABRID3AARID4AOSPFNOOSPFARID6ARIDrouter-id7、clearipospfprocess 看看A的RID变为多少summary-addressip-addresssummary-addressip-addressmasknot-ABRASBRABROSPF外部路由可以被汇3、Bsummary-address156.26.32.0255.255.255.192（26比特子网掩码16-2summary-addressip-addressmasktagsummary-address156.26.32.0255.255.255.224tag88（26比特子网掩码summary-address156.26.32.32255.255.255.224tag42（26比特子网掩码3Ashowiprouterouterripversionredistributeospf1metric1route-mapchecktagspassive-interfaceSerial0/1network10.0.0.0noauto-route-mapchecktagspermit10（route-map模式matchtag17-1timerslsa-group-pacingLSDBLSAs（LSA都有同样的计时器，会造routerospftimerslsa-group-pacing180（showipospftimerlsa-17-2timersspfdelayDelay5OSPFSPF算法计算的延迟时间。Interval10SPF（SPF计算如果太频繁可能1SPF1015routerospftimersspf1015showipospf18-1traffic-shareminacross-略19-1ipospf19-2ipospfauthenticationauthentication-key19-3ipospfauthenticationmessage-19-4ipospfmessage-digest-keykey-idmd519-5ipospfauthenticationIOS12.0版本之前，如果在一个区域启用认证，那么这区域内所有的接口都要启用相同的认证。12.0NULL认证。ipospfipospfauthentication-key4A、BMD5ipospfauthenticationmessage-ipospfmessage-digest-key1md55Ashowipospfinterface ipospfmessage-digest-key2md58Ashowipospfinterface10ABkey删掉，noipospfmessage-digest-key0启用简单密码认证，但是串口上不认证。area0 （router模式ipospfauthentication-key ipospfauthentication 13、排除故障命令debugipospf19-6ipospfcost2、查看接口的成本值showipospfinterfacee0/0[lo0]4A、B100ipospfcostipospfdead-intervalseconds （默认值是10秒）ipospfhello-intervalseconds （默认值是40秒）ipospfretransmit-intervalseconds（默认值是4秒）ipospftransmit-delayseconds （默认值是1秒）2、查看一下这四个值，showipospfinterfaceserial3Adead-interval41ipospfdead-interval5debugipospf10debugipospf19-8ipospfdemand-OSPFHello消息被禁止，LSA的定期更新也不会泛洪到按需电路2AOSPF按需电路ipospfdemand-3Ashowipospfinterfaceserial19-9ipospfflood-果拓扑发生变化，LSA都将扩散，不管你有没有配置该命令。2BAloopbackLSAshowipospfdatabaserouter3AOSPFipospfflood-19-10ipospfmtu-上图中，AMTU1500，C1490，ACExstart状态，他们Exstart的状态。RouterAinterfaceSerial0/0bandwidth64noipaddressencapsulationframe-relayframe-relaylmi-typeansiinterfaceSerial0/0.1point-to-pointframe-relayinterface-dlci101interfaceSerial0/0.2point-to-pointframe-relayinterface-dlci102RouterinterfaceSerial0encapsulationframe-relayipospfnetworkpoint-to-pointnoipmroute-cachebandwidth64frame-relaymapip10.1.1.1110broadcastnoframe-relayinverse-arpframe-relaylmi-typeRouterCinterfaceSerial0mtu1490bandwidth64noipencapsulationframe-relaynoipmroute-cacheinterfaceSerial0.1point-to-ipaddress10.1.1.6frame-relayinterface-dlci2、在A上打开 debugipospf3OSPFclearipospf4showipospf5ACipospfmtu-ignore注：CiscoMTU进行配置，所以在这些网络类型上出现不ipospfmtu-ignore来解决了。19-11ipospfnetwork1loopbackOSPF64K，不ARP，配置映射关系，LMIANSI。2OSPFshowipospfinterfaceserial4NBMA网络配置成广播网络ipospfnetwork1BCPVCnoframe-relaymapip10.1.1.31122AclearipospfprocessADR ipospfpriority（BC都认为他们之间是直接连接的，因为他们在相同的子网内且是广播型网络，从他frame-relaymapip10.1.1.3110broadcast（A上配置）frame-relaymapip10.1.1.2120broadcast（B上配置ipospfnetworknon-ipospfnetworkpoint-to-ipospfnetworkpoint-to-multipointnon-1loopbackOSPF64K，不ARP，配置映射关系，LMIANSI。ipospfpriority0 （B、C上配置）frame-relaymapip10.1.1.3110broadcast（B上配置）frame-relaymapip10.1.1.2120broadcast（C上配置）2OSPFshowipospfinterfaceserial4A配置成点对多点，BCipospfnetworkpoint-to-multipointipospfnetworkpoint-to-point6OSPFdebugipospf7BCHello30iposp