DHCP基本配置

第一步 安装 DHCP

[root@localhost ~]# yum install dhcp dhcp-devel

DHCP文件简介

/etc/dhcp/dhcpd.conf #主配置文件，除了括号那栏，其它都要结尾 ; 这样的分号

/var/lib/dhcpd/dhcpd.leases #IP地址租约在这里

第二步 配置 DHCP

1. 主文件配置

[root@localhost ~]# vi /etc/dhcp/dhcpd.conf

#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.sample
#   see 'man 5 dhcpd.conf'
#

# 设定租约期限

default-lease-time 259200;
max-lease-time 518400;

# 设定领域名称与DNS

option domain-name "dhcp.google";

option domain-name-servers 192.168.100.1;          #DNS服务器

ddns-update-style interim;                         #鸟哥说这是DHCP加入新功能要用的

# 动态IP分配的设定

subnet 192.168.100.0 netmask 255.255.255.0 {
        range 192.168.100.249 192.168.100.253;
        option broadcast-address 192.168.100.255;
        option routers 192.168.100.1;              #网关
}


# 给BOSS等设定静态IP

host google-inside {
        hardware ethernet 00:1D:7D:70:91:AB;       #这个网卡址址是我的(连接的是:号)
        fixed-address 192.168.100.252;
        option broadcast-address 192.168.100.255;
        option routers 192.168.100.1;
}
 

1. dhcpd配置

[root@localhost ~]# vi /etc/rc.d/init.d/dhcpd

configtest() {
    [ -x $exec ] || return 5
    [ -f $config ] || return 6
    $exec -q -t -cf $config
    RETVAL=$?
    if [ $RETVAL -eq 1 ]; then
        $exec -t -cf $config
    else
        echo "Syntax: OK" >&2
    fi
    return $RETVAL
}

INTERFACES="eth0"                         #加入这一句

rh_status() {
    status -p $pidfile $exec
}
 

第三步 启动 DHCP

[root@localhost ~]# service dhcpd start

[root@localhost ~]# netstat -utl | grep bootps
udp        0      0    *:bootps       *:* 

看到上面的结果，证明成功了

第四步 测试

1. windows 客户端太简单就不说了
2. linux 客户端

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

BOOTPROTO=dhcp

这样就可以了