DHCP服务器和DHCP中继

 dhcp中继代理server1：

 

 编辑中继配置文件：vim /etc/sysconfig/dhcrelay     

INTERFACES="eth0 eth1 eth2" 

DHCPSERVERS="172.17.17.2"  

 

开启网卡功能：echo 1 >/proc/sys/net/ipv4/ip_forward 

启动中继代理服务：service dhcrelay start  

 

server2

setup设置IP地址，掩码，网关分别为：172.17.17.2,255.255.255.0,172.17.17.1

 

cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf  拷贝模板文件并覆盖原有的主配置文件

 

编辑配置文件：vim /etc/dhcpd.conf  

 

ddns-update-style interim;

ignore client-updates;       

option time-offset            

default-lease-time 21600;   

max-lease-time 43200;        

 

subnet 172.17.17.0 netmask 255.255.255.0 {     

        option routers                 

        option subnet-mask            

        range dynamic-bootp 172.17.17.100 172.17.17.200;

        host print {                                            

                hardware ethernet 12:34:56:78:AB:CD;

                fixed-address 172.17.17.101;

        }

}

subnet 192.168.1.0 netmask 255.255.255.0 {   

        option routers                  192.168.1.1;

        option subnet-mask              255.255.255.0;

        range dynamic-bootp 192.168.1.100 192.168.1.200;

}

subnet 192.168.2.0 netmask 255.255.255.0 {   

        option routers                  192.168.2.1;

        option subnet-mask              255.255.255.0;

        range dynamic-bootp 192.168.2.100 192.168.2.200;

}

启动dhcp服务：service dhcpd start