我用的是電信 8M 寬帶，聯網也費了很大勁。將CentOS 6.4網絡配置過程記錄下來。以下全是以root權限執行的。在命令行中輸入su 回車輸入root密碼就能用root權限了。
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首先將光盤1 放入光驅，啟動之後，執行如下命令：
mount /dev/cdrom /mnt
cd /mnt
rpm -ivh ppp* rp-pppo*
安裝好了之後 繼續往下
[root@localhost ~]# pppoe-setup ---------------這裡開始安裝PPPOE
Welcome to the PPPoE client setup. First, I will run some checks on
your system to make sure the PPPoE client is installed properly...
LOGIN NAME
Enter your Login Name (default root): xy170638010214 ---------------這裡鍵入上網撥號的帳號
INTERFACE
Enter the Ethernet interface connected to the PPPoE 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): ---------------這裡按回車鍵（這裡的話要注意選對網卡，如果你是通過網線鏈接電腦上網的，那麼你就選擇 eth0 ，但是如果你使用無線鏈接 路由器的 那麼選擇 wlan0 ，我剛開始沒有選對網卡，導致最後執行 adsl-start 的時候 報錯提示/usr/sbin/adsl-start: line 217: 4044 Terminated $CONNECT "$@" > /dev/null 2>&1 ,其中 的4044 貌似每次都在變，有的是後是3907 。大家要注意啊。）
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): ---------------這裡按回車鍵
DNS
Please enter the IP address of your ISP's primary DNS server.
If your ISP claims that 'the server will provide dynamic DNS addresses',
enter 'server' (all lower-case) here.
If you just press enter, I will assume you know what you areppp
doing and not modify your DNS setup.
Enter the DNS information here: ---------------這裡鍵入 server 也就是自動獲得DNS
PASSWORD
Please enter your Password: ---------------這
裡鍵入上網撥號密碼
Please re-enter your Password: ---------------這裡鍵入上網撥號密碼
USERCTRL
Please enter 'yes' (three letters, lower-case.) if you want to allow
normal user to start or stop DSL connection (default yes): ---------------這裡鍵入 yes
FIREWALLING
Please choose the firewall rules to use. Note that these rules are
very basic. You are strongly encouraged to use a more sophisticated NTHQB198529CFO
firewall setup; however, these will provide basic security. If you
are running any servers on your machine, you must choose 'NONE' and
set up firewalling yourself. Otherwise, the firewall rules will deny
access to all standard servers like Web, e-mail, ftp, etc. If you
are using SSH, the rules will block outgoing SSH connections which
allocate a privileged source port.
The firewall choices are:
0 - NONE: This script will not set any firewall rules. You are responsible
for ensuring the security of your machine. You are STRONGLY
recommended to use some kind of firewall rules.
1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation
2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway
for a LAN
Choose a type of firewall (0-2): 0 ---------------這裡鍵入 0
Start this connection at boot time
Do you want to start this connection at boot time?
Please enter no or yes (default no):y ---------------這裡鍵入 y
** Summary of what you entered **
Ethernet Interface: eth0
User name: xy170638010214
Activate-on-demand: No
DNS addresses: Supplied by ISP's server
Firewalling: NONE
User Control: yes
Accept these settings and adjust configuration files (y/n)? y ---------------這裡鍵入 y
Adjusting /etc/sysconfig/network-scripts/ifcfg-ppp0
Adjusting /etc/ppp/chap-secrets and /etc/ppp/pap-secrets
(But first backing it up to /etc/ppp/chap-secrets.bak)
(But first backing it up to /etc/ppp/pap-secrets.bak)
Congratulations, it should be all set up!
Type '/sbin/ifup ppp0' to bring up your xDSL link and '/sbin/ifdown ppp0'
to bring it down.
Type '/sbin/pppoe-status /etc/sysconfig/network-scripts/ifcfg-ppp0'
to see the link status.
[root@localhost ~]# pppoe-start ---------------激活PPPOE設備，成功後會自動返回
[root@localhost ~]# （出現這個說明鏈接成功。不成功會報錯的。）
[root@localhost ~]# pppoe-status ---------------查看PPPOE狀態
pppoe-status: Link is up and running on interface ppp0
6: ppp0: mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
link/ppp
inet 113.14.36.24 peer 113.14.32.1/32 scope global ppp0 ---------------這裡有IP分配給你了，可以知道你已經成功登錄這個帳號了。我們ping下百度IP看看通了，所以可以上網咯。
[root@localhost ~]# ping 121.14.88.14
PING 121.14.88.14 (121.14.88.14) 56(84) bytes of data.
64 bytes from 121.14.88.14: icmp_seq=1 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=2 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=3 ttl=54 time=17.6 ms
64 bytes from 121.14.88.14: icmp_seq=4 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=5 ttl=54 time=17.7 ms
^C64 bytes from 121.14.88.14: icmp_seq=6 ttl=54 time=17.6 ms
64 bytes from 121.14.88.14: icmp_seq=7 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=8 ttl=54 time=17.6 ms
64 bytes from 121.14.88.14: icmp_seq=9 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=10 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=11 ttl=54 time=17.7 ms
64 bytes from 121.14.88.14: icmp_seq=12 ttl=54 time=17.7 ms
^C64 bytes from 121.14.88.14: icmp_seq=13 ttl=54 time=18.1 ms
64 bytes from 121.14.88.14: icmp_seq=14 ttl=54 time=17.6 ms
64 bytes from 121.14.88.14: icmp_seq=15 ttl=54 time=17.6 ms
^C^X64 bytes from 121.14.88.14: icmp_seq=16 ttl=54 time=17.6 ms
^X^C
--- 121.14.88.14 ping statistics ---
16 packets transmitted, 16 received, 0% packet loss, time 15895ms
rtt min/avg/max/mdev = 17.675/17.744/18.170/0.175 ms
[root@localhost ~]# pppoe-status
pppoe-status: Link is up and running on interface ppp0
6: ppp0: mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
link/ppp
inet 113.14.36.24 peer 113.14.32.1/32 scope global ppp0
[root@localhost ~]#
以下是對PPPOE的基本操作
使用:
撥號上網 pppoe-start
段開上網 pppoe-stop
查看狀態 pppoe-status
更多CentOS相關信息見CentOS 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=14
