路由器接入ADSL配置详解 

1、Cisco路由器连接ADSL modem的PPPoE配置： 说明:此案例为北京电信adsl PPPoE接入,需要使用一个普通adsl modem和一台cisco 2500路由器(双以太口),IOS 12.2(15)T,能够实现局域网共享上网.  此案例配置共分7步:  第一步:配置vpdn vpdn e  1、Cisco路由器连接ADSL modem的PPPoE配置： 说明:此案例为北京电信adsl PPPoE接入,需要使用一个普通adsl modem和一台cisco 2500路由器(双以太口),IOS 12.2(15)T,能够实现局域网共享上网. 此案例配置共分7步: 第一步:配置vpdn vpdn enable(启用路由器的虚拟专用拨号网络---vpnd) vpdn-group office(建立一个vpdn组,) request-dialin(初始化一个vpnd tunnel,建立一个请求拨入的vpdn子组,) protocol pppoe(vpdn子组使用pppoe建立会话隧道) 第二步: 配置路由器连接adsl modem的接口 interface Ethernet1 no ip address pppoe enable允许以太接口运行pppoe pppoe-client dial-pool-number 1将以太接口的pppoe拨号客户端加入拨号池1 第三步:配置逻辑拨号接口: interface Dialer1 ip address negotiated从adsl服务商动态协商得到ip地址 ip nat outside为该接口启用NAT encapsulation ppp为该接口封装ppp协议 dialer pool 1该接口使用1号拨号池进行拨号 dialer-group 1该命令对于pppoe是意义不大的 ppp authentication pap callin启用ppp pap验证 ppp pap sent-username xxxxxxx password 0 yyyyyyy使用已经申请的用户名和口令 第四步:配置内部网络接口 interface Ethernet0(内部网络接口) ip address 10.1.1.1 255.255.255.0 ip nat inside为该接口启用NAT 第五步:配置路由器为内部网络主机提供dhcp服务 ip dhcp excluded-address 10.1.1.1 ip dhcp pool ABC import all(导入dns和wins server) network 10.1.1.0 255.255.255.0 default-router 10.1.1.1 第六步:配置NAT: access-list 1 permit 10.1.1.0 0.0.0.255 cc 第七步:配置缺省路由 ip route 0.0.0.0 0.0.0.0 Dialer1 2、Cisco路由器连接ADSL WIC卡之PPPoE配置解: ! vpdn enable no vpdn logging <=由于ADSL的PPPoE应用是通过虚拟拨号来实现的所以在路由器中需要使用VPDN的功能 ! vpdn-group pppoe <=为PPPoE启动了VPDN的进程 request-dialin protocol pppoe <=设置拨号协议为PPPoE ! interface FastEthernet0 <=设置公司内部网络地址 ip address 192.168.0.1 255.255.255.0 ip nat inside <=为启用NAT转换，设置Fast ethernet端口为内部网络，从内部网络收到的数据的原地址转换为公网地址 ! interface ATM0/0 <=设置ADSL端口 no ip address <=请不要设置地址 no atm ilmi-keepalive bundle-enable dsl operating-mode auto hold-queue 224 in interface ATM0/0.1 point-to-point <=ADSL的通讯 依靠VC，所以必须设定点到点VC pvc 8/81 <=设置PVC的相关参数， 即VCI和VPI的值，如果不清楚请向局端查询 pppoe-client dial-pool-number 1 <=PPPoE拨号进程使用了常规的拨号进程，这里引用了dialer-pool 1 ! interface Dialer1 <=建立一个虚拟拨号端口 ip address negotiated <=由于局端提供动态地址，所以必须设定地址为协商获得 ip mtu 1492 <=修改mtu值以适用于ADSL网络 ip nat outside <=为启用NAT转换，设置该端口为外部网络 encapsulation ppp <=使用PPP的帧格式 dialer pool 1 ppp authentication pap callin <=设置拨号的验证方式为pap ppp pap sent vip pass vip <=发送用户名和密码 ip nat inside source list 1 interface Dialer1 overload <=设置了NAT的转换方式，使用了dialer 1端口的动态地址 ！ ip classless ip route 0.0.0.0 0.0.0.0 dialer1 <=将所有不可路由的数据报转发给ADSL线路，设定缺省路由 no ip http server ! access-list 1 permit 192.168.0.0 0.0.0.255

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

Cisco路由器连接ADSL modem的PPPoE配置： hostname bjsite  !  ip subnet-zero  no ip domain-lookup  !  vpdn enable  no vpdn logging  !  vpdn-group 1  request-dialin  protocol pppoe  !  interface Ethernet0/0  ip address 192.168.0.1 255.255.255.0  ip nat inside  no ip mroute-cache  !  !  !  !  interface Ethernet0/1  no ip address  pppoe enable  pppoe-client dial-pool-number 1  !  interface Dialer1  ip address negotiated  ip nat outside  ip mtu 1492  encapsulation ppp  no ip mroute-cache  dialer pool 1  dialer-group 1  ppp authentication pap  ppp pap sent-username dg48907653@163.gd password xxxxxxxx !  ip classless  no ip http server  !  dialer-list 1 protocol ip permit  ip nat inside source list 1 interface Dialer1 overload ip route 0.0.0.0 0.0.0.0 dialer1  access-list 1 permit 192.168.0.0 0.0.0.255  !  line con 0  exec-timeout 0 0  transport input none  line vty 0 4  login  !  end Cisco路由器连接ADSL WIC卡之PPPoE配置： vpdn-group pppoe  request-dialin  !--- we are the PPPoE client requesting to establish  !--- a session with the aggregation unit (6400 NRP).  protocol pppoe  !  !--- internal Ethernet network. !  interface FastEthernet0  ip address 10.92.1.182 255.255.255.0  ip nat inside  !--- DSL interface. !  interface ATM0  no ip address  no atm ilmi-keepalive bundle-enable dsl operating-mode auto hold-queue 224 in !--- All defaults. !--- PPPoE runs on top of AAL5SNAP, but the  !--- encap aal5snap command is not used.  !  interface ATM0.1 point-to-point  pvc 1/1  pppoe-client dial-pool-number 1 !--- pvc 1/1 is an example value that must be changed  !--- to match the value used by the ISP.  !  !--- The PPPoE client code ties into a dialer interface upon  !--- which a virtual-access interface is cloned.  !  interface Dialer1  ip address negotiated  ip mtu 1492 !--- Ethernet MTU default = 1500 (1492 + PPPoE headers = 1500) ip nat outside  encapsulation ppp  dialer pool 1 !--- Ties to atm interface.  ppp authentication chap callin  ppp chap hostname <username>  ppp chap password <password> !  !--- The ISP will instruct you regarding  !--- the type of authentication to use.  !--- To change from PPP CHAP to PPP PAP,  !--- replace the following three lines: !--- ppp authentication chap callin  !--- ppp chap hostname <username>  !--- ppp chap password <password>  !--- with the following two lines: !--- ppp authentication pap callin !--- ppp pap sent-username <username> password <password> !--- For NAT we are going to overload on the Dialer1  !--- interface and add a default route out  !--- since dialer ip address can change.  ip nat inside source list 1 interface Dialer1 overload  ip classless  ip route 0.0.0.0 0.0.0.0 dialer1  no ip http server  !  access-list 1 permit 10.92.1.0 0.0.0.255 －－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－ 用cisco路由器做PPPoE Server端配置 en conf t hostname Adsl_walkbird username walkbird password walkbird vpdn enable vpdn-group pppoe accept-dialin protocol pppoe virtual-template 1 exit exit interface ethernet 0/0 pppoe enable no shutdown interface virtual-template 1 mtu 1492 //PPP头部最大传输单元 ip unnumbered loopback //借用地址 peer default ip address pool pppoe_ip_pool encapsulation ppp ppp authentication pap exit ip local pool pppoe_ip_pool 11.11.11.10 11.11.11.100 interface lookback0 ip address 1.1.1.1 255.255.255.0 no shutdown exit 三、实验测试 sh ip route sh ip int brief debug pppoe event sh ip int dialer 1