部署DHCP和中继服务器

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3.1、安装包名

Yum –y installdhcpd*

3.2、编辑主配置文件

复制模板到主配置文件，进行修改，注意装的rpm包模板的话，应该全在这个目录下

cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample/etc/dhcpd.conf

[root@localhost~]# cat /etc/dhcpd.conf | grep -v "#"

ddns-update-stylenone;

ignoreclient-updates;

option domain-name "tmd.com";

default-lease-time21600;

max-lease-time43201;

subnet192.168.10.0 netmask 255.255.255.0 {}；必须有一个网段和本服务器相连

subnet 192.168.2.0netmask 255.255.255.0 {

option routers 192.168.2.1;

option subnet-mask 255.255.255.0;

option domain-name-servers 192.168.2.1, 202.106.0.20;

range 192.168.2.50 192.168.2.254;

}

subnet 192.168.3.0netmask 255.255.255.0 {

option routers 192.168.3.1;

option subnet-mask 255.255.255.0;

option domain-name-servers 192.168.3.1, 202.106.0.20;

range 192.168.3.50 192.168.3.254;

}

subnet 192.168.4.0netmask 255.255.255.0 {

option routers 192.168.4.1;

option subnet-mask 255.255.255.0;

option domain-name-servers 192.168.4.1;

range 192.168.4.50 192.168.4.254;

}

注意：如果服务器有多块网卡，必须在/etc/sysconfig/dhcpd中指定网卡

# Command lineoptions here

DHCPDARGS=”eth0eth1 eth2”

否则只在eth0上提供服务

服务启动

/etc/init.d/dhcpdstart

3.3、DHCP中继

3.3.1、主配置文件

vim/etc/sysconfig/dhcrelay

# Command line optionshere

INTERFACES=""

DHCPSERVERS="192.168.1.1"；Dhcp的ip地址

服务启动

/etc/init.d/dhcrelaystart

3.4、客户端测试

Windows测试

Ipconfig/renew

Linux测试

Dhclient –r 重新释放ip

Dhclient [eth0] 获取ip地址

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