Linux中配置/etc/sysconfig/network-script/ifcfg-eth0

网络接口配置文件
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet ??????#网卡类型
DEVICE=eth0 ????????#网卡接口名称
ONBOOT=yes ?????????#系统启动时是否自动加载
BOOTPROTO=static ???#启用地址协议 –static:静态协议 –bootp协议 –dhcp协议
IPADDR=192.168.1.11 ?????#网卡IP地址
NETMASK=255.255.255.0 ???#网卡网络地址
GATEWAY=192.168.1.1 ?????#网卡网关地址
DNS1=10.203.104.41 ??????#网卡DNS地址
HWADDR=00:0C:29:13:5D:74 #网卡设备MAC地址
BROADCAST=192.168.1.255 ?#网卡广播地址 ?
重新导入ifcfg-eth0网络配置文件
[root@localhost ~]# /etc/init.d/network reload
Shutting down interface eth0: ????????????????????????????[ OK ]
Shutting down loopback interface: ????????????????????????[ OK ]
Bringing up loopback interface: ??????????????????????????[ OK ]
Bringing up interface eth0: ??????????????????????????????[ OK ]

网卡接口关闭与激活
[root@localhost ~]# ifdown eth0 ??#关闭网络
[root@localhost ~]# ifup eth0 ????#启动网络

网络服务启动与关闭
方法一:
[root@localhost ~]# service network stop ???#关闭网络服务
[root@localhost ~]# service network start ??#启动网络服务
[root@localhost ~]# service network restart #重启网络服务
方法二：
[root@localhost ~]# /etc/init.d/network stop
[root@localhost ~]# /etc/init.d/network start
[root@localhost ~]# /etc/init.d/network restart ?
网卡状态查询
[root@localhost ~]# service network status
Configured devices:
lo eth0
Currently active devices:
lo eth0

临时配置网卡信息，无需重启。
[root@localhost ~]# ifconfig eth0 10.1.1.10 netmask 255.0.0.0
查看网卡接口信息，默认列出所有接口
[root@localhost ~]# ifconfig
eth0 ?????Link encap:Ethernet ?HWaddr 00:0C:29:13:5D:74
?????????inet addr:192.168.1.11 ?Bcast:192.168.1.255 ?Mask:255.255.255.0
?????????inet6 addr: fe80::20c:29ff:fe13:5d74/64 Scope:Link
?????????UP BROADCAST RUNNING MULTICAST ?MTU:1500 ?Metric:1
?????????RX packets:413 errors:0 dropped:0 overruns:0 frame:0
?????????TX packets:572 errors:0 dropped:0 overruns:0 carrier:0
?????????collisions:0 txqueuelen:1000
?????????RX bytes:47701 (46.5 KiB) ?TX bytes:64842 (63.3 KiB)
?????????Base address:0x2000 Memory:d8920000-d8940000

lo ???????Link encap:Local Loopback
?????????inet addr:127.0.0.1 ?Mask:255.0.0.0
?????????inet6 addr: ::1/128 Scope:Host
?????????UP LOOPBACK RUNNING ?MTU:16436 ?Metric:1
?????????RX packets:407 errors:0 dropped:0 overruns:0 frame:0
?????????TX packets:407 errors:0 dropped:0 overruns:0 carrier:0
?????????collisions:0 txqueuelen:0
?????????RX bytes:70759 (69.1 KiB) ?TX bytes:70759 (69.1 KiB)
查看当前路由及网关信息
[root@localhost ~]# netstat -r
Kernel IP routing table
Destination ????Gateway ????????Genmask ????????Flags ??MSS Window ?irtt Iface
192.168.1.0 ????* ??????????????255.255.255.0 ??U ????????0 0 ?????????0 eth0
169.254.0.0 ????* ??????????????255.255.0.0 ????U ????????0 0 ?????????0 eth0
default ????????192.168.1.1 ????0.0.0.0 ????????UG ???????0 0 ?????????0 eth0

DNS：
主机名：CentOS
主DNS：202.106.46.151
第二DNS:202.106.0.20
第三DNS:8.8.8.8

网络配置：
eth0
静态ip：192.168.1.106
子网掩码 ???????255.255.255.0
默认网关 IP ????192.168.1.1

DEVICE=eth0
IPADDR=192.168.1.106
NETMASK=255.255.255.0
BROADCAST=192.168.1.255
ONBOOT=yes
BOOTPROTO=none
GATEWAY=192.168.1.1
TYPE=Ethernet
“/etc/sysconfig/network-scripts/ifcfg-eth0” 11L, 187C