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DNSoption 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IPhost 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/dhcpdconfigtest() {[ -x $exec ] || return 5[ -f $config ] || return 6$exec -q -t -cf $configRETVAL=$?if [ $RETVAL -eq 1 ]; then$exec -t -cf $configelseecho "Syntax: OK" >&2fireturn $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-eth0BOOTPROTO=dhcp

这样就可以了