rhel5下的DHCP服务和DHCP中继的配置

rhel5下的DHCP服务和DHCP中继

 

[root@localhost ~]# rpm -q dhcp package dhcp is not installed               ( 查看dhcp包没有安装) [root@localhost ~]# mount /dev/cdrom /mnt   （挂载光盘并安装dhcp包） mount: block device /dev/cdrom is write-protected, mounting read-only [root@localhost ~]# rpm -ivh /mnt/Server/dhcp- 3.0.5 -3.el5.i386.rpm warning: /mnt/Server/dhcp-3.0.5-3.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186 Preparing...                ########################################### [100%]    1:dhcp                   ########################################### [100%] [root@localhost ~]# vi /etc/dhcpd.conf （编辑dhcp配置文件，建两个作用域） # # DHCP Server Configuration file. #   see /usr/share/doc/dhcp*/dhcpd.conf.sample # ddns-update-style       interim; default-lease-time      21600; max-lease-time          43200; option domain-name     "yang.com"; option domain-name-servers     192.168.0.20; subnet 192.168.0.0     netmask 255.255.255.0{         range   192.168.0.100   192.168.0.200;         option subnet-mask     255.255.255.0;         option routers         192.168.0.254; } subnet 172.16.0.0      netmask 255.255.0.0{         range   172.16.0.100    172.16.0.200;         option subnet-mask     255.255.0.0;         option routers         172.16.0.254; } ~ ~ ~ ~ "/etc/dhcpd.conf" 19L , 522C （保存退出） [root@localhost ~]# service dhcpd start    （启动dhcp服务） Starting dhcpd:                                            [ OK ] [root@localhost ~]# netstat -nupl （查看当前的UDP端口侦听） Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name udp        0      0 0.0.0 .0:943                 0.0.0.0:*                               1615/rpc.statd udp        0      0 0.0.0.0:946                 0.0.0.0:*                               1615/rpc.statd udp        0      0 0.0.0.0:67                  0.0.0.0:*                               3438/dhcpd udp        0      0 0.0.0.0:111                 0.0.0.0:*                               1590/portmap udp        0      0 0.0.0.0:631                 0.0.0.0:*                               1850/cupsd 客户端获取到的IP信息如下： .............. [root@localhost ~]# cat /var/lib/dhcpd/dhcpd.leases （查看租约文件） lease 192.168.0.200 { starts 5 2008/11/14 10:18:35; ends 5 2008/11/14 16:18:35; binding state active; next binding state free; hardware ethernet 00:03:ff:44: 1a :b9; uid "\001\000\003\377D\032\271"; client-hostname "dc"; } [root@localhost ~]# chkconfig --level 35 dhcpd on （设置dhcp服务在35级别自动启动） DHCP中继的实现： ogin as: root    （使用管理员用户登陆） [email protected]'s password: Last login: Fri Nov 14 04:33:18 2008 from 192.168.0.2 [root@localhost ~]# mount /dev/cdrom /mnt （挂载光盘并安装dhcp包） mount: block device /dev/cdrom is write-protected, mounting read-only [root@localhost ~]# rpm -ivh /mnt/Server/dhcp- 3.0.5 -3.el5.i386.rpm warning: /mnt/Server/dhcp-3.0.5-3.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186 Preparing...                ########################################### [100%]    1:dhcp                   ########################################### [100%] [root@localhost ~]# rpm -ql dhcp |grep /etc （查看dhcp包包含在/etc目录下的文件信息） /etc/dhcpd.conf /etc/rc.d/init.d/dhcpd /etc/rc.d/init.d/dhcrelay /etc/sysconfig/dhcpd /etc/sysconfig/dhcrelay [root@localhost ~]# vi /etc/sysconfig/dhcrelay （编辑/etc/sysconfig/dhcrelay 文件并启用中继功能） # Command line options here INTERFACES="eth0 eth1" （定义在那个网卡上启用中继功能） DHCPSERVERS="192.168.0.20" （定义dhcp服务器的IP） [root@localhost ~]# service dhcrelay start （启用中继服务） Starting dhcrelay: Internet Systems Consortium DHCP Relay Agent V 3.0.5 -RedHat Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ Listening on LPF/eth1/00:03:ff:4d: 1a :b9 Sending on   LPF/eth1/00:03:ff:4d: 1a :b9 Listening on LPF/eth0/00:03:ff:42: 1a :b9 Sending on   LPF/eth0/00:03:ff:42: 1a :b9 Sending on   Socket/fallback                                                            [ OK ] [root@localhost ~]# netstat -unpl （查看UDP端口的侦听信息） Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name udp        0      0 0.0.0 .0:646                 0.0.0.0:*                               1742/rpc.statd udp        0      0 0.0.0.0:649                 0.0.0.0:*                               1742/rpc.statd udp        0      0 0.0.0.0:67                  0.0.0.0:*                               3139/dhcrelay udp        0      0 0.0.0.0:111                 0.0.0.0:*                               1717/portmap udp        0      0 0.0.0.0:631                 0.0.0.0:*                               1977/cupsd [root@localhost ~]# chkconfig --level 35 dhcrelay on （设置dhcp中继服务在35级别自动启用）

 

本文出自 “上善若水威加海内” 博客，转载请与作者联系！