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2009-10-26 10:46:23

简单的DHCP配置
 
1、安装dhcp
rpm -ivh dhcp-3.0.5-7.el5
 
2、vim /etc/dhacd.conf
 
ddns-update-style interim;
ignore client-updates;
subnet 192.168.0.0 netmask 255.255.255.0 {                      (DHCP范围)
# --- 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地址分配范围)
        default-lease-time 21600;
        max-lease-time 43200;
        host ns {                                                             (固定DHCP分配)
                hardware ethernet 00:22:15:53:56:07;       (客户机MAC地址)
                fixed-address 192.168.0.50;                        (固定的IP)   
                option domain-name-servers      192.168.0.9;  (DNS地址)
        }
}
 
3、客户机配置
把客户机的DHCP打开就好
 
*********************************************************************
 
多作用域配置
 
1、需要两块网卡,第二块网卡的IP地址是192.168.1段的,还需要打开网卡的转发功能/etc/sysct1.conf 把IPV4那里把0改成1。
 
2、编辑/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;

        }
3、配置完客户机就OK了
 
*********************************************************************
 
中继配置
 
 
 
1、编辑/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;

        }
其它的没动,只是加了一条语句。要把网卡的转发功能关闭。这里还可以添加多个网段,格式一样。
 
2、需要一台服务器做中继服务器,这台服务器需要两张网卡,而且还要打开网卡转发功能。然后配置/etc/sysconfig/dhcrelay
 
INTERFACES="eth0 eth1"           (如果不写就是搜索所有)
DHCPSERVERS="192.168.0.X"  (中继的地址)
 
3、现在客户端之间就可以通信了。
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