搭建一个简单的DHCP服务器

实验环境:

系统:RHEL6.4

一.给DHCP服务器配置固定IP

[[email protected] ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

HWADDR=.......

TYPE=Ethernet

UUID=......

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=static

IPADDR=192.168.50.253

NETMASK=255.255.255.0

[[email protected] ~]#service network restart

[[email protected] ~]#chkconfig network on

[[email protected] ~]inconfig eth0

二.安装dhcp软件包

[[email protected] ~]rpm -q dhcp

package dhcp is not installed

放入RHEL6.4.iso

[[email protected] ~]cd /misc/cd/Packages/

[[email protected] Packages]ls dhcp*

dhcp-4.1.1-34.P1.el6.x86_64.rpm

dhcp-common-4.1.1-34.P1.el6.x86_64.rpm

[[email protected] Packages]rpm -ivh dhcp-4.1.1-34.P1.el6.x86_64.rpm

warning: dhcp-4.1.1-34.P1.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing...                ########################################### [100%]

1:dhcp                   ########################################### [100%]

三.配置DHCP服务器

[[email protected] ~]vim /etc/dhcpd/dhcpd.conf

ddns-update-style none;       //动态更新类型

subnet 192.168.50.0 netmask 255.255.255.0 {                    //网段声明

range 192.168.50.10 192.168.50.20;                           //IP分配范围

range 192.168.50.50 192.168.50.60;

option domain-name-servers 192.168.50.252,114.114.114.114;   //DNS服务器地址

option domain-name "tarena.com";                             //默认搜索域

option routers 192.168.50.254;        //默认网关

default-lease-time 21600;                                    //默认租期

max-lease-time 43200;        //最大租期

}

host hostname {                                                //识别名称

hardware ethernet 00:00:00:00:00:00;        //客户机MAC地址

fixed-address 192.168.50.33;        //分配给改客户机的固定IP

}

四.启动服务

[[email protected] ~]service dhcpd status

dhcpd已停

[[email protected] ~]service dhcpd start

启动dhcpd :                                [确定]

[[email protected] ~]chkconfig --list dhcpd

dhcpd           0:关闭  1:关闭  2:关闭   3:关闭   4:关闭   5:关闭 6:关闭

[[email protected] ~]chkconfig dhcpd on

五.客户端验证

Windows平台

网络设置选择自动选取，ipconfig /release

ipconfig /renew

Linux 平台

临时

dhclient -d eth0     获取

dhclient -r  eth0     释放

永久

[[email protected] ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

HWADDR=00:00:00:00:00:00

TYPE=Ethernet

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=dhcp

[[email protected] ~]#service network restart

[[email protected] ~]#ifconfig eth0

错误检查:

service dhcpd configtest             //检查dhcpd.conf语法错误

根据提示一步步排错，如果语法OK，服务启动不了，查看本机IP地址.

搭建一个简单的DHCP服务器