Linux的IP地址的配置

Linux的IP地址的配置

1.vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"
BOOTPROTO="none"
HWADDR="BC:AE:C5:11:4C:D9"
NM_CONTROLLED="yes"
ONBOOT="yes"
IPADDR=192.168.2.199
PREFIX=24
GATEWAY=192.168.2.1
TYPE="Ethernet"
UUID="cb660fe2-f744-4395-a220-87fcd00d57ec"

.设置静态IP地址.
     (1).命令行设置(该方式只是临时设置,系统重启后失效)
            [1].设置IP和掩码
                    ifconfig 接口名(如eth0)  IP地址 netmask 子网掩码
             [2].设置网关
                    route add default gw 默认网关
             [3].设置DNS服务器地址
                    echo "nameserver DNS服务器地址">/etc/resolv.conf
             实例:假设设置eth0的IP:192.168.1.100,DNS:192.168.1.12
                     ifconfig eth0 192.168.1.100 netmask 255.255.255.0
                    route add default gw 192.168.1.1
                    echo "nameserver=192.168.1.12">/etc/resolv.conf
      (2).修改文件来实现配置网络(需要重启网络接口)
            [1].修改IP地址,文件:/etc/sysconfig/network-scripts/ifcfg-接口名
                  这里假设网络接口名为eth0.
                   cat<<EOF>/etc/sysconfig/network-scripts/ifcfg-eth0
                         DEVICE=eth0  (注:这里填的是网络接口名)
                         BOOTPROTO=none
                         ONBOOT=yes (注:是否随系统启动)
                          IPADDR=192.168.1.100(注:这里填写的是IP地址)
                          PREFIX=24 (注:这里填写的是掩码的长度)
                          GATEWAY=192.168.1.1( 注:这里写的是网关)
                      EOF
               [2].修改DNS
                         echo "nameserver DNS服务器地址">/etc/resolv.conf
               [3].重启网络接口(假设为eth0)
                         ifup eth0(注:这里写的是接口名)