linux之DHCP configure

DHCP需求环境如下:
公司内部有120个IP地址可以使用:210.99.100.41-210.99.100.100,
                           210.99.100.141-210.99.100.200
netmask:255.255.255.0
gateway:210.99.100.1
DNS:210.99.100.254
注意:只能使用指定的IP地址才能上网.
要给总经理和副总经理指定固定IP,使他们能随时上网.
为了充分利用IP资源,要设置IP地址的租期为2个小时.
服务器检查文件安装情况:
rpm -qa | grep dhcp
结果应类似于:dhcp-3.0.5-7.e15
dhcpv6_client_*为dhcp客户端需要安装的软件.如果没有,就安装上述服务器的软件.

配置步骤如下:
1)修改/etc/dhcpd.conf
ddns-update-style ad-hoc;
subnet 210.99.100.0 netmask 255.255.255.0{
   range 210.99.100.41 210.99.100.87;
   range 210.99.100.89 210.99.100.99;
   range 210.99.100.141 210.99.100.185
   option routers 210.99.100.1;
   option domain-name-servers 210.99.100.254;
   max-lease-time 7200;
}

host win2k1{
   hardware Ethernet 00:D0:B7:9A:13:D2;
   fixed-address 210.99.100.187;
}
host win2k2{
   hardware Ethernet 00:D0:B7:9A:13:D3;
   fixed-address 210.99.100.186;
}