DHCP簡單配置

簡單的DHCP配置

 

一、安裝dhcp

rpm -ivh dhcp-3.0.5-7.el5

 

二、vim /etc/dhacd.conf

 

ddns-update-style interim;
ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {                      （DHCP範圍）

# --- default gateway
        option routers                  192.168.0.1;
        option subnet-mask              255.255.255.0;

        option domain-name              "mail.hat.com";
        option domain-name-servers      192.168.0.8;

        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.0.128 192.168.0.254;        （IP地址分配範圍）
        default-lease-time 21600;
        max-lease-time 43200;

        host ns {                                                             （固定DHCP分配）
                hardware ethernet 00:22:15:53:56:07;       （客戶機MAC地址）
                fixed-address 192.168.0.50;                        （固定的IP）   
                option domain-name-servers      192.168.0.9;  （DNS地址）

        }

}

 

三、客戶機配置

把客戶機的DHCP打開就好

 

*********************************************************************

 

多做用域配置

 

一、須要兩塊網卡，第二塊網卡的IP地址是192.168.1段的，還須要打開網卡的轉發功能/etc/sysct1.conf 把IPV4那裏把0改爲1。

 

二、編輯/etc/dhcpd.conf

 

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.0.1;
        option subnet-mask              255.255.255.0;

        option domain-name              "mail.hat.com";
        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.0.128 192.168.0.254;
        default-lease-time 21600;
        max-lease-time 43200;

        }

subnet 192.168.1.0 netmask 255.255.255.0 {

        option routers                  192.168.1.1;
        option subnet-mask              255.255.255.0;

        option domain-name              "mail.hat.com";
        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.0.128 192.168.0.254;
        default-lease-time 21600;
        max-lease-time 43200;

        }

三、配置完客戶機就OK了

 

*********************************************************************

 

中繼配置

 

 

 

一、編輯/etc/dhcpd.conf文件

 

ddns-update-style interim;
ignore client-updates;
shared-network test {

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.0.1;
        option subnet-mask              255.255.255.0;

        option domain-name              "mail.hat.com";
        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.0.128 192.168.0.254;
        default-lease-time 21600;
        max-lease-time 43200;

        }

subnet 192.168.1.0 netmask 255.255.255.0 {

        option routers                  192.168.1.1;
        option subnet-mask              255.255.255.0;

        option domain-name              "mail.hat.com";
        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.0.128 192.168.0.254;
        default-lease-time 21600;
        max-lease-time 43200;

        }

其它的沒動，只是加了一條語句。要把網卡的轉發功能關閉。這裏還能夠添加多個網段，格式同樣。

 

二、須要一臺服務器作中繼服務器，這臺服務器須要兩張網卡，並且還要打開網卡轉發功能。而後配置/etc/sysconfig/dhcrelay

 

INTERFACES="eth0 eth1"           (若是不寫就是搜索全部)
DHCPSERVERS="192.168.0.X"  （中繼的地址）

 

三、如今客戶端之間就能夠通訊了。