CISCO配置命令大全(3)

发布时间:2019-07-02 13:36:38编辑:auto阅读(1311)

    6、配置PPP:
      PPP(Point-to-Point Protocol)是SLIP(Serial Line IP protocol)的继承者,它提供了跨过同步和异步电路实现路由器到路由器(router-to-router)和主机到网络(host-to-network)的连接。
      
      CHAP(Challenge Handshake Authentication Protocol)和PAP(Password Authentication Protocol) (PAP)通常被用于在PPP封装的串行线路上提供安全性认证。使用CHAP和PAP认证,每个路由器通过名字来识别,可以防止未经授权的访问。
      
      CHAP和PAP在RFC 1334上有详细的说明。
      
      A. 有关命令
      端口设置
      任务 命令
      设置PPP封装 encapsulation ppp1
      设置认证方法 ppp authentication {chap | chap pap | pap chap | pap} [if-needed] [list-name | default] [callin]
      指定口令 username name password secret
      设置DCE端线路速度 clockrate speed
      注:1、要使用CHAP/PAP必须使用PPP封装。在与非Cisco路由器连接时,一般采用PPP封装,其它厂家路由器一般不支持Cisco的HDLC封装协议。
      2. 举例
      路由器Router1和Router2的S0口均封装PPP协议,采用CHAP做认证,在Router1中应建立一个用户,以对端路由器主机名作为用户名,即用户名应为router2。同时在Router2中应建立一个用户,以对端路由器主机名作为用户名,即用户名应为router1。所建的这两用户的password必须相同。
      设置如下:
      Router1:
      
      hostname router1
      username router2 password xxx
      interface Serial0
      ip address 192.200.10.1 255.255.255.0
      clockrate 1000000
      ppp authentication chap
      !
      Router2:
      
      hostname router2
      username router1 password xxx
      interface Serial0
      ip address 192.200.10.2 255.255.255.0
      ppp authentication chap
      
      7、广域网配置实例
       
      DDR Example
      Dial Backup Example
      Configure subinterface Example
      Frame Relay Switching Example
      Channelized E1 Interface Example
      X.25 Example
      DDR Example
      
       例:
      
      Configuration for RouterA:
       
      ip route 131.108.29.0 131.108.126.2
      ip route 131.108.1.0 131.108.126.2
      dialer-list 1 protocol ip permit
      dialer-list 1 protocol ipx deny
      !
      interface serial 0
      ip address 131.108.126.1 255.255.255.0
      dialer in-band
      dialer-group 1
      !
      dialer map ip 131.108.126.2 5551234
      !
      dialer idle-timeout 300
       
      Dial Backup Example
       
      A)同步V.25 bits方式
       
      Configuration for RouterA:
       
      interface Serial0:0
      backup delay 0 10
      backup interface Serial10
      ip address 16.217.30.2 255.255.255.252
      !
      interface Serial10
      ip address 16.30.16.81 255.255.255.0
      encapsulation ppp
      dialer in-band
      dialer string 8292
      dialer-group 1
      pulse-time 1
      !
      dialer-list 1 protocol ip permit
       
      B)辅助口作拨号备份
       
      Configuration for RouterA:
       
      chat-script MYDIAL "" "atdt 8292" TIMEOUT 60 "CONNECT"
      !
      interface Serial0
      backup delay 0 0
      backup interface Async1
      ip address 16.3.1.1 255.255.255.0
      
      encapsulation ppp
      !
      interface Async1
      ip address 16.3.2.1 255.255.255.0
      encapsulation ppp
      keepalive 9
      async default routing
      async dynamic address
      async dynamic routing
      async mode dedicated
      dialer in-band
      dialer string 8292
      dialer-group 1
      !
      dialer-list 1 protocol ip permit
      !
      line aux 0
      script dialer MYDIAL
      modem InOut
      transport output none
      stopbits 1
      flowcontrol hardware
      speed 9600
       
      Subinterface Example(Frame Relay)
       
       
      Configuration for RouterA:
       
      interface serial 0
      encapsulation frame-relay
      interface s 0.1 multipoint
      ip address 11.10.11.1 255.255.255.0
      frame-relay interface-dlci 41
      frame-relay interface-dlci 42
       
      Configuration for RouterC:
       
      interface serial 0
      encapsulation frame-relay
      interface s 0.1 point-to-point
      ip address 11.10.16.2 255.255.255.0
      frame-relay interface-dlci 46
       
      Configuration for RouterB:
       
      interface serial 0
      encapsulation frame-relay
      interface s 0.1 multipoint
      ip address 11.10.11.3 255.255.255.0
      frame-relay interface-dlci 43
      frame-relay interface-dlci 44
      !
      interface s 0.2 point-to-point
      ip address 11.10.13.1 255.255.255.0
      frame-relay interface-dlci 48
       
      Frame Relay Switching Example
       
       
      Configuration for RouterA:
       
      frame-relay switching
      !
      int s 0
      no ip address
      frame-relay encapsulation
      frame-relay route 167 tun0 43
      frame-relay intf-type dce
      !
      int s 1
      ip address 131.108.100.1 255.255.255.0
      !
      int tu 0
      tunnel source serial 1
      tunnel destination 131.108.13.2
       
      Configuration for RouterB:
       
      frame-relay switching
      !
      int s 0
      no ip address
      frame-relay encapsulation
      frame-relay route 9 tun0 43
      frame-relay intf-type dce
      !
      int s 1
      ip address 131.108.13.2 255.255.255.0
      !
      int tu 0
      tunnel source serial 1
      tunnel destination 131.108.100.1
       
      Channelized E1 Interface Example
       
      假设是7500系列路由器,E1接口(MIP板)在插槽4上面.一个channel-group可对应多个时间槽,本例中serial4/0:1有5*64Kbps的数率. 
      Configuration for Router:
       
      controller E1 0
      framing NO-CRC4
      channel-group 0 timeslots 1
      channel-group 1 timeslots 2,7-9,20 speed 64
      !
      interface Serial4/0:0
      ip address 16.217.30.2 255.255.255.252
      encapsulation ppp
      !
      interface Serial4/0:1
      ip address 16.205.30.5 255.255.255.252
       
      X.25 Example
       
      在配置X.25时,为减少路由交换引起的呼叫,通常用静态路由.而当一对多情况下,
      不在一个子网中用subinterface配置.
       
      Configuration for Router:
       
      interface serial 0
      ip address 131.108.100.1 255.255.255.0
      encapsulation x25
      x25 address 041673226839
      x25 htc 16
      x25 map ip 131.108.100.2 041675222222
      int s 0.1
      ip address 131.108.101.1 255.255.255.0
      x25 map ip 131.108.101.2 041674222222
      !
      ip route 131.108.100.0 255.255.255.0 131.108.100.2
      ip route 131.108.101.0 255.255.255.0 131.108.101.2

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