思科CCNA中文教程第十三章拨号备份

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1、第十三章拨号备份13.1.自动拨号备份提问当广域网链路中断得时候自动拨号恢复备份链路回答Router1#configureterminalEnterconfigurationcommands,oneperline.EndwithCNTL/Z.Router1(config)#interfaceBRI0/0Router1(config-if)#ipaddress10.1.99.55255.255.255.0Router1(config-if)#encapsulationpppRouter1(config-if)#dialeridle-timeout300Router1(config-if)#di

2、alermapip10.1.99.1namedialhostbroadcast95551212Router1(config-if)#dialerload-threshold50eitherRouter1(config-if)#dialer-group1Router1(config-if)#isdnswitch-typebasic-niRouter1(config-if)#isdnspid18005551234005551234Router1(config-if)#isdnspid28005551235005551235Router1(config-if)#pppauthenticationc

3、hapRouter1(config-if)#pppmultilinkRouter1(config-if)#exitRouter1(config)#usernamedialhostpassworddialpasswordRouter1(config)#iproute0.0.0.00.0.0.010.1.99.1180Router1(config)#dialer-list1protocoliplist101Router1(config)#access-list101denyeigrpanyanyRouter1(config)#access-list101permitipanyanyRouter1

4、(config)#routereigrp55Router1(config-router)#network10.0.0.0Router1(config-router)#endRouter1#注释isdnswitch-type定义对端ISDN交换机类型，中国用basic-net3。通过Router1#showisdnstatus来查看当前状态Router1#showisdnstatusGlobalISDNSwitchtype=basic-niISDNBRI1/0interfacedsl8,interfaceISDNSwitchtype=basic-niLayer1Status:ACTIVELay

5、er2Status:TEI=85,Ces=1,SAPI=0,State=MULTIPLE_FRAME_ESTABLISHEDTEI=86,Ces=2,SAPI=0,State=MULTIPLE_FRAME_ESTABLISHEDTEI85,ces=1,state=8(established)spid1configured,spid1sent,spid1validTEI86,ces=2,state=8(established)spid2configured,spid2sent,spid2validLayer3Status:0ActiveLayer3Call(s)Activateddsl8CCB

6、s=0TheFreeChannelMask:0x80000003TotalAllocatedISDNCCBs=2Router1#说明得是关注流量触发了拨号接通以后所有得数据都可以传输，不仅仅是关注流量13.2.使用拨号接口提问捆绑多个物理接口为一个拨号接口回答捆绑两个ISDNBRI接口Router1#configureterminalEnterconfigurationcommands,oneperline.EndwithCNTL/Z.Router1(config)#interfaceBRI0/0Router1(config-if)#encapsulationpppRouter1(confi

7、g-if)#dialerpool-member1Router1(config-if)#isdnswitch-typebasic-niRouter1(config-if)#isdnspid18005551234005551234Router1(config-if)#isdnspid28005551235005551235Router1(config-if)#pppauthenticationchapRouter