RHEL7平台下电信拨号上网配置

配置通过pppoe包来完成，直接用yum来安装这个rpm包

[root@localhost Packages]# rpm -qa| grep pppoerp-pppoe-3.11-5.el7.x86_64

配置前，网卡信息：

[root@localhost Packages]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: ens34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:1d:60:89:7f:31 brd ff:ff:ff:ff:ff:ff    inet 192.168.1.2/24 brd 192.168.1.255 scope global dynamic ens34       valid_lft 43sec preferred_lft 43sec    inet6 fe80::21d:60ff:fe89:7f31/64 scope link       valid_lft forever preferred_lft forever55: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN    link/ether b6:84:dd:d4:33:cd brd ff:ff:ff:ff:ff:ff    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0       valid_lft forever preferred_lft forever

配置过程：

[root@localhost network-scripts]# pppoe-setupWelcome to the PPPoE client setup.  First, I will run some checks onyour system to make sure the PPPoE client is installed properly...LOGIN NAMEEnter your Login Name (default root): cd02885838643INTERFACEEnter the Ethernet interface connected to the PPPoE modemFor Solaris, this is likely to be something like /dev/hme0.For Linux, it will be ethX, where 'X' is a number.(default eth0): ens34Do 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 secondsafter which the link should be dropped.  If you want the link tostay up permanently, enter 'no' (two letters, lower-case.)NOTE: Demand-activated links do not interact well with dynamic IPaddresses.  You may have some problems with demand-activated links.Enter the demand value (default no):DNSPlease 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 aredoing and not modify your DNS setup.Enter the DNS information here: 202.98.96.68 #这里是成都DNS地址Please enter the IP address of your ISP's secondary DNS server.If you just press enter, I will assume there is only one DNS server.Enter the secondary DNS server address here: 202.98.96.69 #与上面一样，同样是成都DNS地址PASSWORDPlease enter your Password:Please re-enter your Password:USERCTRLPlease enter 'yes' (three letters, lower-case.) if you want to allownormal user to start or stop DSL connection (default yes): yesFIREWALLINGPlease choose the firewall rules to use.  Note that these rules arevery basic.  You are strongly encouraged to use a more sophisticatedfirewall setup; however, these will provide basic security.  If youare running any servers on your machine, you must choose 'NONE' andset up firewalling yourself.  Otherwise, the firewall rules will denyaccess to all standard servers like Web, e-mail, ftp, etc.  If youare using SSH, the rules will block outgoing SSH connections whichallocate 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 workstation2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway                for a LANChoose a type of firewall (0-2): 0Start this connection at boot timeDo you want to start this connection at boot time?Please enter no or yes (default no):yes** Summary of what you entered **Ethernet Interface: ens34User name:          cd02885838643Activate-on-demand: NoPrimary DNS:        202.98.96.68Secondary DNS:      202.98.96.69Firewalling:        NONEUser Control:       yesAccept these settings and adjust configuration files (y/n)? yAdjusting /etc/sysconfig/network-scripts/ifcfg-ppp0Adjusting /etc/resolv.conf  (But first backing it up to /etc/resolv.conf.bak)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 network-scripts]# /sbin/ifup ppp0 #启动端口信息[root@localhost network-scripts]#

配置完成后，网卡信息：

[root@localhost Packages]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: ens34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:1d:60:89:7f:31 brd ff:ff:ff:ff:ff:ff    inet 192.168.1.2/24 brd 192.168.1.255 scope global dynamic ens34       valid_lft 30sec preferred_lft 30sec    inet6 fe80::21d:60ff:fe89:7f31/64 scope link       valid_lft forever preferred_lft forever55: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN    link/ether b6:84:dd:d4:33:cd brd ff:ff:ff:ff:ff:ff    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0       valid_lft forever preferred_lft forever84: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3    link/ppp    inet 100.64.3.210 peer 100.64.0.1/32 scope global ppp0       valid_lft forever preferred_lft forever[root@localhost Packages]# ping www.baidu.comPING www.a.shifen.com (180.97.33.108) 56(84) bytes of data.64 bytes from 180.97.33.108: icmp_seq=1 ttl=56 time=32.8 ms64 bytes from 180.97.33.108: icmp_seq=2 ttl=56 time=33.7 ms64 bytes from 180.97.33.108: icmp_seq=3 ttl=56 time=33.4 ms^C--- www.a.shifen.com ping statistics ---3 packets transmitted, 3 received, 0% packet loss, time 2002msrtt min/avg/max/mdev = 32.811/33.332/33.748/0.389 ms