DHCP服务器配置:
 
   找到dhcp-3.0.5-7.el5.i386.rpm 这个包,然后安装。
   安装   rpm -ivh foo-1.0-l.i386.rpm    i表示includedocs  安装文档,V表示显示附加信息,h表示hash 安装时输出hash 记号。
    [root@test Server]# rpm -ivh dhcp-3.0.5-21.el5.i386.rpm
warning: dhcp-3.0.5-21.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
Preparing...                ########################################### [100%]
   1:dhcp                   ########################################### [100%]
表示安装成功。
安装成功后会生成以下两个文件
配置文件是/etc/dhcpd.conf ,       租约数据库文件时 /var/lib/dhcpd/dhcpd.leases     ,
然后,编辑 /etc/dhcpd.conf ,
 [root@test dhcpd]# vi /etc/dhcpd.conf    
#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.sample   其中会显示这两行
接下来,我们要将/usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample 覆盖到/etc/dhcp.conf
 
[root@test dhcp-3.0.5]# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample  /etc/dhcpd.conf
cp:是否覆盖“/etc/dhcpd.conf? y
 
然后编辑/etc/dhcpd.conf 文件:
[root@test etc]# vi dhcpd.conf
 
ddns-update-style interim;        #定义所支持的DNS动态更新类型
ignore client-updates;            #忽略客户端更新
 
subnet 192.168.0.0 netmask 255.255.255.0 {
 
# --- default gateway
        option routers                  192.168.0.1;          #网关地址
        option subnet-mask             255.255.255.0;      #子网掩码:默认子网掩码
 
        option nis-domain               "domain.org";
        option domain-name              "domain.org";     #DNS后缀
        option domain-name-servers      192.168.1.1;       #DNS服务器地址
 
        option time-offset              -18000; # Eastern Standard Time  
#       option ntp-servers              192.168.1.1;
#       option netbios-name-servers     192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#       option netbios-node-type 2;
 
        range dynamic-bootp 192.168.0.128 192.168.0.254;     #动态IP地址范围
        default-lease-time 21600;                      #默认IP租约时间,单位秒
        max-lease-time 43200;               #客户端IP租约时间最大值,单位为妙
 
        # we want the nameserver to appear at a fixed address
        host ns {
                next-server marvin.redhat.com;
                hardware ethernet 12:34:56:78:AB:CD;
                fixed-address 207.175.42.254;
        }
}
 
可以修改为:
 
 ddns-update-style interim;        #定义所支持的DNS动态更新类型
ignore client-updates;            #忽略客户端更新
 
subnet 192.168.100.0  netmask 255.255.255.0 {
 
# --- default gateway
        option routers                  192.168.100.1;          #网关地址
        option subnet-mask             255.255.255.0;      #子网掩码:默认子网掩码
 
        option nis-domain               "yanglei.com";
        option domain-name              "yanglei.com";     #DNS后缀
        option domain-name-servers      192.168.100.1;       #DNS服务器地址
 
        option time-offset              -18000; # Eastern Standard Time  
#       option ntp-servers              192.168.100.1;
#       option netbios-name-servers     192.168.100.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#       option netbios-node-type 2;
 
        range dynamic-bootp 192.168.100.10   192.168.100.254;     #动态IP地址范围
        default-lease-time 21600;                      #默认IP租约时间,单位秒
        max-lease-time 43200;               #客户端IP租约时间最大值,单位为妙
 
        # we want the nameserver to appear at a fixed address
        host ns {
                next-server marvin.redhat.com;
                hardware ethernet 12:34:56:78:AB:CD;
                fixed-address 207.175.42.254;
        }
}
修改完后保存。
启动服务:
[root@test etc]# /etc/init.d/dhcpd  start
启动 dhcpd[确定]
启动完成后,查看日志:
[root@test etc]# tail -f /var/log/messages
Oct 27 15:07:17 test dhcpd: Copyright 2004-2006 Internet Systems Consortium.
Oct 27 15:07:17 test dhcpd: All rights reserved.
Oct 27 15:07:17 test dhcpd: For info, please visit http://www.isc.org/sw/dhcp/
Oct 27 15:07:17 test dhcpd: WARNING: Host declarations are global.  They are not limited to the scope you declared them in.
Oct 27 15:07:17 test dhcpd: Wrote 0 deleted host decls to leases file.
Oct 27 15:07:17 test dhcpd: Wrote 0 new dynamic host decls to leases file.
Oct 27 15:07:17 test dhcpd: Wrote 0 leases to leases file.
Oct 27 15:07:17 test dhcpd: Listening on LPF/eth0/00:0c:29:fa:b0:cd/192.168.100/24
Oct 27 15:07:17 test dhcpd: Sending on   LPF/eth0/00:0c:29:fa:b0:cd/192.168.100/24
Oct 27 15:07:17 test dhcpd: Sending on   Socket/fallback/fallback-net     
日志显示如上  说明配置完成。    
网络设置为自动获取,检查网路中地址如果在192.168.100.10   192.168.100.254;  这个段内,说明配置成功。