1、配置拨号访问组
[RouterA]dialer-group 1 rule ip permit //配置拨号访问组1以及对应的拨号访问控制条件
2、配置拨号接口信息
[RouterA] interface dialer 0
[RouterA-Dialer0] dialer bundle enable
[RouterA-Dialer0] dialer-group 1 //将Dialer0接口与拨号访问组1关联
[RouterA-Dialer0] ip address ppp-negotiate //配置Dialer0接口通过协商获取IP地址
[RouterA-Dialer0] ppp chap user test
[RouterA-Dialer0] ppp chap password simple 123456
[RouterA-Dialer0] ppp pap local-user test password simple 123456
[RouterA-Dialer0] ppp ipcp dns admit-any
[RouterA-Dialer0] ppp ipcp dns request //从运营商获取DNS地址
[RouterA-Dialer0] dialer timer idle 0 //不自动断开，永远在线的意思
[RouterA-Dialer0] dialer timer autodial 5
[RouterA-Dialer0] ip mtu 1492 //设置接口MTU值
[RouterA-Dialer0] tcp mss 1440 //TCP能够承载的最大的应用数据段长度
[RouterA-Dialer0] nat outbound //配置NAT上网
[RouterA-Dialer0] quit
3、在接口上调用
[RouterA]interface GigabitEthernet 0/1
[RouterA-GigabitEthernet0/1]pppoe-client dial-bundle-number 0 //将PPPoE拨号绑定到物理接口G0/0
[RouterA-GigabitEthernet0/1]quit
4、配置默认路由
[RouterA]ip route-static 0.0.0.0 0.0.0.0 Dialer 0 //配置默认路由从拨号接口出去
5、保存配置
[RouterA]save
