网络接口配置文件[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0# Intel Corporation 82545EM Gigabit Ethernet Controller (Copper)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 reloadShutting 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 statusConfigured devices:lo eth0Currently 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 ~]# ifconfigeth0      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 -rKernel IP routing tableDestination     Gateway         Genmask         Flags   MSS Window  irtt Iface192.168.1.0     *               255.255.255.0   U         0 0          0 eth0169.254.0.0     *               255.255.0.0     U         0 0          0 eth0default         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 本文转载于：http://www.cnblogs.com/iixiaowei/articles/2300084.html