首先应该确定您是否安装了pppoe的应用程序。

　　如果确实已经安装了，可以在终端用 adsl－setup命令启动adsl配置，提示过程为英文。

　　大概为:

[root@localhost root]# adsl-setup
Welcome to the ADSL client setup. First, I will run some checks on
your system to make sure the PPPoE client is installed properly...

The following DSL config was found on your system:

Device: Name:
ppp0 DSLppp0

Please enter the device if you want to configure the present DSL config
(default ppp0) or enter 'n' if you want to create a new one: ppp0 //默认为ppp0

LOGIN NAME

Enter your Login Name (default SJ00411210A1): anthrax //这里用你自己的用户名代替我的anthrax:)

INTERFACE

Enter the Ethernet interface connected to the ADSL modem
For Solaris, this is likely to be something like /dev/hme0.
For Linux, it will be ethX, where 'X' is a number.
(default eth0): eth0 //默认网卡设备为eth0

Do you want the link to come up on demand, or stay up continuously?
If you want it to come up on demand, enter the idle time in seconds
after which the link should be dropped. If you want the link to
stay up permanently, enter 'no' (two letters, lower-case.)
NOTE: Demand-activated links do not interact well with dynamic IP
addresses. You may have some problems with demand-activated links.
Enter the demand value (default no): no //这里使用默认no就可以了，断线后不自动拨号。