interface dialer 0
 mtu 1488                //接口MTU
 encapsulation PPP     //封装PPP
 ppp pap sent-username 051285779286 password 7 151c5472477b745415   //用PAP的方式认证
 ip nat outside
 ip access-group 3199 in
 ip address negotiate             //地址自动协商
 fair-queue
 dialer pool 1                        //关联拨号池，与以太网接口关联的一样
 dialer idle-timeout 1200        //配置超时时间，当线路上一定时间没有数据就挂断，默认1200S
 dialer-group 1                     //与dail-list对应，关联刺激拨号的规则
 bandwidth 100000
!
interface GigabitEthernet 0/1
 no ip redirects
 no ip mask-reply
 no ip proxy-arp
 no arp trust-monitor enable
 pppoe enable                                         //启动pppoe功能
 pppoe-client dial-pool-number 1 no-ddr      //将接口关联到拨号池，配置自动拨号方式，dail-on-demand和no-add两个必选一个
 duplex auto
 speed auto

access-list 1 permit 192.168.1.0 0.0.0.255 time-range ruiji    //定义感兴趣数据流
dialer-list 1 protocol ip list 1     //关联数据流