Linux下搭建dhcp服务

12ewe

实验前提：

1.所有试验机在相同网络

2.DHCP服务器有固定ip
实验步骤：

• 配置ip
  
  

[iyunv@localhost Server]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Intel Corporation 82545EM Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.4.5
HWADDR=00:0c:29:62:2b:78
[iyunv@localhost Server]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 202.106.0.20
nameserver 192.168.4.5
search  dhcpser.tarena.com
2.安装软件包


[iyunv@localhost Server]# yum -y install dhcp-3.0.5-31.el5_8.1.x86_64.rpm
3.修改配置文件

[iyunv@localhost Server]# cat /etc/dhcpd.conf
ddns-update-style none;
subnet 192.168.4.0 netmask 255.255.255.0 {

        option routers                  192.168.4.5;

        option subnet-mask              255.255.255.0;

        option domain-name              "tarena.com";

        option domain-name-servers      192.168.1.1;

        option time-offset              -18000;

        range 192.168.4.100 192.168.4.200;

        default-lease-time 21600;

        max-lease-time 43200;

        next-server 192.168.1.1;

        filename "pxelinux.0";

}
4. 启动服务
[iyunv@dhcpser ~]# rpm -ql dhcp | grep init.d
/etc/rc.d/init.d/dhcpd
/etc/rc.d/init.d/dhcrelay
[iyunv@dhcpser ~]# service dhcpd restart
[iyunv@dhcpser ~]# chkconfig dhcpd on
注：如果启动失败，可以检测主配置文件语法
[iyunv@dhcpser ~]# service dhcpd configtest
5. 验证
Linux：
# dhclient -d eth0临时获取
# dhclient -r eth0释放
Windows：
cmd>ipconfig /release释放ip
cmd>ipconfig /renew重新获取ip