Linux DHCP服務實驗報告

DHCP實驗報告 --楊冬

1. 實驗環境

伺服器：Red Hat Enterprise Linux 5.3（ip：192.168.0.20）

伺服器：Red Hat Enterprise Linux 5.3（ip：192.168.0.10、192.168.1.10）

用戶端：windows xp   

 

01.安裝好軟體包

   [root@yang ~]# rpm -ihv /media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

1. 實驗目標一：配置一台DHCP伺服器為區域網路使用者指派ip地址。

 

 01.修改設定檔.

[root@yang ~]# cp -rf /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf

cp：是否覆蓋“/etc/dhcpd.conf”? y

[root@yang ~]# vim /etc/dhcpd.conf

ddns-update-style interim;

ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.0.1;

        option subnet-mask              255.255.255.0;

        option nis-domain               "yangdong.com";

        option domain-name             "yangdong.com";

        option domain-name-servers      61.147.37.1;

        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;

        host ns {

                next-server marvin.redhat.com;

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

                fixed-address 207.175.42.254;

        }

}

 

 

 

02.重啟伺服器.

 

 

   [root@yang ~]# service dhcpd restart

 

關閉dhcpd：                                     [確定]

啟動dhcpd：                                     [確定]

 

03.用戶端測試

 

                     測試成功

 

1. 實驗目標二：配置實現DHCP中繼代理服務.

 

01.實驗環境：

主伺服器安裝：  [root@yang ~]# rpm -ihv /media/Server/dhcp-3.0.5-18.el5.i386.rpm

轉送伺服器安裝：[root@yang ~]# rpm -ihv /media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

 

 

 02.主伺服器配置：

 

 

    ①.[root@yang ~]# vim /etc/dhcpd.conf                 

 

ddns-update-style interim;

ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.0.1;

        option subnet-mask              255.255.255.0;

        option nis-domain               "yangdong.com";

        option domain-name              "yangdong.com";

        option domain-name-servers      61.147.37.1;

        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 nis-domain               "yangdong.com";

        option domain-name              "yangdong.com";

        option domain-name-servers      61.147.37.1;

        option time-offset              -18000; # Eastern Standard Time

        range dynamic-bootp 192.168.1.128 192.168.1.254;

        default-lease-time 21600;

        max-lease-time 43200;

}     

 

 

 

  ②.重啟伺服器.

 

 

   [root@yang ~]# service dhcpd restart

 

關閉dhcpd：                                     [確定]

啟動dhcpd：                                     [確定]

 

 

 

  03. 轉送伺服器配置

 

 

   ①.[root@hello ~]# rpm -ihv /media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

warning: /media/Server/dhcp-3.0.5-18.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186

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

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

[root@hello ~]# service dhcpd start

啟動dhcpd：                                      [失敗]  

 

 

 

  ②.[root@hello ~]# vim /etc/sysctl.con

 

修改：net.ipv4.ip_forward = 1  //開啟路由功能

 [root@hello ~]# sysctl -p

net.ipv4.ip_forward = 1

net.ipv4.conf.default.rp_filter = 1

net.ipv4.conf.default.accept_source_route = 0

kernel.sysrq = 0

kernel.core_uses_pid = 1

net.ipv4.tcp_syncookies = 1

kernel.msgmnb = 65536

kernel.msgmax = 65536

kernel.shmmax = 4294967295

kernel.shmall = 268435456

 

 

 

  ③.[root@hello ~]# vim /etc/sysconfig/dhcrelay

 

     # Command line options here

INTERFACES="eth0 eth1"

DHCPSERVERS="192.168.0.20"

     [root@hello ~]# service dhcrelay start

啟動dhcrelay：   

                             [確定]

 ④.用戶端測試

 

                            測試成功

 

 

 

 

 

 

 

 

 

 

 

 

 

1. 實驗前的準備

本文出自 “楊冬的部落格”