【正文】 設(shè)置電話號(hào)碼 dialer string dialstring 指定在特定線路下路由器默認(rèn) 使用的chatscript script {dialer|reset} scriptname Router1: hostname Router1 ! enable secret 5 $1$QKI7$wXjpFqC74vDAyKBUMallw/ ! username Router2 password cisco chatscript ciscodefault AT TIMEOUT 30 OK ATDT \T TIMEOUT 30 CONNECT \c ! interface Ethernet0 ip address ! interface Async1 ip address encapsulation ppp async default routing async mode dedicated dialer inband d。所建的這兩用戶的password必須相同。其中采用PPP/CHAP做安全認(rèn)證，在Router1中應(yīng)建立一個(gè)用戶，以對(duì)端路由器主機(jī)名作為用戶名，即用戶名應(yīng)為Router2。 DDR（dialondemand routing）實(shí)例此例通過Cisco 2500系列路由器的aux端口實(shí)現(xiàn)異步撥號(hào)DDR連接。 tacacsserver key tac 訪問服務(wù)器設(shè)置如下：hostname router!aaa newmodelaaa authentication login default tacacs+aaa authentication login no_tacacs enableaaa authentication ppp default tacacs+aaa authorization exec tacacs+aaa authorization network tacacs+aaa accounting exec startstop tacacs+aaa accounting network startstop tacacs+enable secret 5 $1$kN4g$!interface Ethernet0 ip address !interface Serial0no ip addressshutdowninterface Serial1no ip addressshutdown!interface GroupAsync1ip unnumbered Ethernet0encapsulation pppasync mode interactivepeer default ip address pool Cisco2511Group142no cdp enablegrouprange 1 16!ip local pool Cisco2511Group142 tacacsserver host tacacsserver key tac!line con 0exectimeout 0 0password ciscologin authentication no_tacacs line 1 16login authentication tacacsmodem InOutmodem autoconfigure type usr_courierautomand ppptransport input allstopbits 1rxspeed 115200txspeed 115200flowcontrol hardwareline aux 0transport input allline vty 0 4password cisco!end2. aaa accounting network startstop tacacs+ 指定Tacacs服務(wù)器地址 tacacsserver host 在Tacacs+服務(wù)器和訪問服務(wù)器設(shè)定共享的關(guān)鍵字，訪問服務(wù)器和Tacacs+服務(wù)器使用這個(gè)關(guān)鍵字去加密口令和響應(yīng)信息。 aaa authorization network tacacs+ +服務(wù)器。 全局設(shè)置：任務(wù) 命令 設(shè)置用戶名和密碼 username username password password 設(shè)置用戶的IP地址池 ip local pool {default | poolname lowipaddress [highipaddress]} 指定地址池的工作方式 ip addresspool [dhcpproxyclient | local] 基本接口設(shè)置命令： 任務(wù) 命令 設(shè)置封裝形式為PPP encapsulation ppp 啟動(dòng)異步口的路由功能 async default routing 設(shè)置異步口的PPP工作方式 async mode {dedicated | interactive} 設(shè)置用戶的IP地址 peer default ip address {ipaddress | dhcp | pool [poolname]} 設(shè)置IP地址與Ethernet0相同 ip unnumbered ethernet0 line撥號(hào)線設(shè)置： 任務(wù) 命令 設(shè)置modem的工作方式 modem {inout|dialin} 自動(dòng)配置modem類型 modem autoconfig discovery 設(shè)置撥號(hào)線的通訊速率 speed speed 設(shè)置通訊線路的流控方式 flowcontrol {none | software [lock] [in | out] | hardware [in | out]} 連通后自動(dòng)執(zhí)行命令 automand mand 訪問服務(wù)器設(shè)置如下：Router: hostname Router enable secret 5 $1$EFqU$tYLJLrynNUKzE4bx6fmH// ! interface Ethernet0 ip address ! interface Async1 ip unnumbered Ethernet0 encapsulation ppp keepalive 10 async mode interactive peer default ip address pool Cisco2511Group142 ! ip local pool Cisco2511Group142 ! line con 0exectimeout 0 0password cisco!line 1 16 modem InOut modem autoconfigure discovery flowcontrol hardware ! line aux 0transport input allline vty 0 4password cisco!end 遠(yuǎn)程訪問1. set user remotenet 使用PPP/IPCP set ip framing none 設(shè)置上網(wǎng)用戶帳號(hào) set ppp clientname 263 設(shè)置上網(wǎng)口令 set ppp password client Enter new Password: 263 ReType new Password: 263 不用PPP/CHAP或PAP做認(rèn)證 set ppp authentication out none 允許地址磋商 set ppp address negotiation local on 設(shè)置地址翻譯 set ip pat on 設(shè)置默認(rèn)路由 set ip route destination 設(shè)置ISP的電話號(hào)碼 set number 2633 激活用戶預(yù)制文件 set active 六、PSTN　　電話網(wǎng)絡(luò)(PSTN)是目前普及程度最高、成本最低的公用通訊網(wǎng)絡(luò)，它在網(wǎng)絡(luò)互連中也有廣泛的應(yīng)用。 Cisco765M通過ISDN撥號(hào)上263由于Cisco765的設(shè)置命令與我們常用的Cisco路由器的命令不同，所以以下列舉了通過Cisco765上263訪問Internet的具體命令行設(shè)置步驟。 dialer idletimeout 120 ppp pap sentusername 263 password 263 no cdp enable no ip splithorizon no shutdown ! ip classless ! ! Static Routes ! ip route bri 0 ! ! Access Control List 2 ! accesslist 2 permit any ! dialerlist 1 protocol ip permit ! ! Dynamic NAT ! ip nat inside source list 2 interface bri 0 overload snmpserver munity public ro ! line console 0 exectimeout 0 0 ! line vty 0 4 ! end 5. 263的ISDN電話號(hào)碼為2633，用戶為263，口令為263，所涉及的命令如下表：任務(wù) 命令 指定接口通過PPP/IPCP地址協(xié)商獲得IP地址 ip address negotiated 指定內(nèi)部和外部端口 ip nat {inside | outside} 使用ppp/pap作認(rèn)證 ppp authentication pap callin 指定接口屬于撥號(hào)組1 dialergroup 1 定義撥號(hào)組1允許所有IP協(xié)議 dialerlist 1 protocol ip permit 設(shè)定撥號(hào)，號(hào)碼為2633 dialer string 2633 設(shè)置如下：Router1:hostname router1 user router2 password cisco ! isdn switchtype basicnet3 ! interface bri 0 ip address encapsulation ppp dialer map ip name router2 class s3 572 dialer loadthreshold 80 ppp callback accept ppp multilink dialergroup 1 ppp authentication chap ！ mapclass dialer s3 dialer callbackserver username dialerlist 1 protocol ip permit ! Router2: hostname router2 user router1 password cisco ! isdn switchtype basicnet3 ! interface bri 0 ip address encapsulation ppp dialer map ip name router1 571 dialer loadthreshold 80 ppp callback request dialer map protocol address name hostname class classname dialstring 設(shè)置接口支持PPP回?fù)?ppp callback accept 在全局模式下為PPP回?fù)茉O(shè)置映射類別 mapclass dialer classname 通過查找注冊(cè)在dialer map里的主機(jī)名來決定回?fù)? ppp multilink dialergroup 1 ppp authentication chap ！ dialerlist 1 protocol ip permit !Cisco路由器同時(shí)支持回?fù)芄δ埽覀儗⒙酚善鱎outer1作為Callback Server,Router2作為Callback Client。T 5ESS switch type for the . (ISDN PRI only) primarydms100 NT DMS100 switch type for the . (ISDN PRI only) New Zealand T basic rate switches basicdms100 NT DMS100 basic rate switches basicni1 National ISDN1 switches primary4ess ATamp。 ntt Japanese NTT ISDN switches primaryntt Japanese ISDN PRI switches