【文章內(nèi)容簡介】 sdn switchtype switchtype1 接口設置 interface bri 0 設置 PPP封裝 encapsulation ppp 設置協(xié)議地址與電話號碼的映射 dialer map protocol nexthopaddress [name 13 hostname] [broadcast] [dialstring] 啟動 PPP多連接 ppp multilink 設置啟動另一個 B通道的閾值 dialer loadthreshold load 顯示 ISDN有關信息 show isdn {active | history | memory | services | status [dsl | interfacetype number] | timers} 注： ,國內(nèi)交換機一般為 basic3。 按區(qū)域分關鍵字 交換機類型 Australia basicts013 Australian TS013 switches Europe basic1tr6 German 1TR6 ISDN switches basicnw3 Norway NET3 switches (phase 1) basic3 NET3 ISDN switches (UK, Denmark, and other nations)。 covers the EuroISDN EDSS1 signalling system primary5 NET5 switches (UK and Europe) vn2 French VN2 ISDN switches vn3 French VN3 ISDN switches Japan ntt Japanese NTT ISDN switches primaryntt Japanese ISDN PRI switches North America basic5ess ATamp。T basic rate switches basicdms100 NT DMS100 basic rate switches basicni1 National ISDN1 switches primary4ess ATamp。T 4ESS switch type for the . (ISDN PRI only) primary5ess ATamp。T 5ESS switch type for the . (ISDN PRI only) primarydms100 NT DMS100 switch type for the . (ISDN PRI only) New Zealand basicnz3 New Zealand Net3 switches 3. ISDN實現(xiàn) DDR（ dialondemand routing）實例 : 設置如下： 14 Router1: hostname router1 user router2 password cisco ! isdn switchtype basic3 ! interface bri 0 ip address encapsulation ppp dialer map ip name router2 572 dialer loadthreshold 80 ppp multilink dialergroup 1 ppp authentication chap ！ dialerlist 1 protocol ip permit ! Router2: hostname router2 user router1 password cisco ! isdn switchtype basic3 ! interface bri 0 ip address encapsulation ppp dialer map ip name router1 571 dialer loadthreshold 80 ppp multilink dialergroup 1 ppp authentication chap ！ dialerlist 1 protocol ip permit ! Cisco 路由器同時支持回撥功能，我們將路由器 Router1作為 Callback Server,Router2作為 Callback Client。 與回撥相關命令 : 任務 命令 映射協(xié)議地址和電話號碼，并在接口上使用在全局模式下定義的 PPP回撥的映射類別。 dialer map protocol address name hostname class classname dialstring 設置接口支持 PPP回撥 ppp callback accept 在全局模式下為 PPP回撥設置映射類別 mapclass dialer classname 通過查找注冊在 dialer map 里的主機名來決定回撥 . dialer callbackserver [username] 設置接口要求 PPP回撥 ppp callback request 設置如下： Router1: hostname router1 user router2 password cisco ! isdn switchtype basic3 ! interface bri 0 ip address encapsulation ppp 15 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 basic3 ! interface bri 0 ip address encapsulation ppp dialer map ip name router1 571 dialer loadthreshold 80 ppp callback request ppp multilink dialergroup 1 ppp authentication chap ！ dialerlist 1 protocol ip permit ! 相關調(diào)試命令 ： debug dialer debug isdn event debug isdn q921 debug isdn q931 debug ppp authentication debug ppp error debug ppp negotiation debug ppp packet show dialer show isdn status 舉例 :執(zhí)行 debug dialer 命令觀察 router2 呼叫 router1,router1 回撥 router2的過程 . router1debug dialer router2ping router1 00:03:50: %LINK3UPDOWN: Interface BRI0:1, changed state to up 00:03:50: BRI0:1:PPP callback Callback server starting to router2 572 00:03:50: BRI0:1: disconnecting call 00:03:50: %LINK3UPDOWN: Interface BRI0:1, changed state to down 00:03:50: BRI0:1: disconnecting call 00:03:50: BRI0:1: disconnecting call 16 00:03:51: %LINK3UPDOWN: Interface BRI0:2, changed state to up 00:03:52: callback to router2 already started 00:03:52: BRI0:2: disconnecting call 00:03:52: %LINK3UPDOWN: Interface BRI0:2, changed state to down 00:03:52: BRI0:2: disconnecting call 00:03:52: BRI0:2: disconnecting call 00:04:05: : Callback timer expired 00:04:05: BRI0:beginning callback to router2 572 00:04:05: BRI0: Attempting to dial 572 00:04:05: Freeing callback to router2 572 00:04:05: %LINK3UPDOWN: Interface BRI0:1, changed state to up 00:04:05: BRI0:1: No callback negotiated 00:04:05: %LINK3UPDOWN: Interface VirtualAccess1, changed state to up 00:04:05: dialer Protocol up for Vi1 00:04:06: %LINEPROTO5UPDOWN: Line protocol on Interface BRI0:1, changed state to up 00:04:06: %LINEPROTO5UPDOWN: Line protocol on Interface VirtualAccess1, chang ed state to up 00:04:11: %ISDN6CONNECT: Interface BRI0:1 is now connected to 572 router1 4. ISDN訪問首都在線 263網(wǎng)實例 : 本地局部網(wǎng) 地址為 ,屬于保留地址，通過 NAT 地址翻譯功能，局域網(wǎng)用戶可以通過 ISDN上 263網(wǎng)訪問 Inter。 263的 ISDN電話號碼為 2633，用戶為 263，口令為 263，所涉及的命令如下表： 任務 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作認證 ppp authentication pap callin 指定接口屬于 撥號組 1 dialergroup 1 定義撥號組 1允許所有 IP協(xié)議 dialerlist 1 protocol ip permit 設定撥號，號碼為 2633 dialer string 2633 設定登錄 263的用戶名和口令 ppp pap sentusername 263 password 263 17 設定默認路由 ip route bri 0 設定符合訪問列表 2 的所有源地址被翻譯為 bri 0所擁有的地址 ip nat inside source list 2 interface bri 0 overload 設定訪問列表 2，允許所有協(xié)議 accesslist 2 permit any 具體配置如下： hostname Cisco2503 ! isdn switchtype basic3 ! ip subzero no ip domainlookup ip routing ! interface Ether 0 ip address ip nat inside no shutdown ! interface Serial 0 shutdown no description no ip address ! interface Serial 1 shutdown no description no ip address ! interface bri 0 ip address negotiated ip nat outside encapsulation ppp ppp authentication pap callin ppp mult