DHCP+PXE配置文件

    subnet 172.16.0.0 netmask 255.255.255.0 { range 172.16.0.10 172.16.0.253；option routers 172.16.0.1；option subnet-mask 255.255.255.0；}

    #配置dhcp服务器

    ###################################

    #放在/etc/dhcpd.conf末尾就可以了option space PXE；option PXE.mtftp-ip code 1 = ip-address；class "pxeclients" { match if substring （option vendor-class-identifier， 0， 9） = "PXEClient"；option vendor-class-identifier "PXEClient"；vendor-option-space PXE；# At least one of the vendor-specific PXE options must be set in # order for the client boot ROMs to realize that we are a PXE-compliant # server.　We set the MCAST IP address to 0.0.0.0 to tell the boot ROM # that we can't provide multicast TFTP （address 0.0.0.0 means no # address）。

    option PXE.mtftp-ip 0.0.0.0；# This is the name of the file the boot ROMs should download. filename "pxelinux.0"；# This is the name of the server they should get it from. next-server 192.168.1.246； //tftp服务器，可以和dhcp服务器不在同一个机器上}

    ###################################

    #打开tftp chkconfig tftp ——level 345 on vi /etc/xinetd.d/tftp #看看内容，不用改

    cd /tftpboot/ mkdir pxelinux.cfg vi default

    ##################################

    #default的内容如下DEFAULT install PROMPT 1 LABEL install FC5-x86 KERNEL vmlinuz APPEND initrd=initrd.img devfs=nomount ramdisk_size=16384

    #################################

    拷贝光盘的/images/pxeboot/或者FC5/isolinux下面的initrd.img和vmlinuz到/tftpboot下，注意，必须用光盘上的，不能用硬盘的。

    cp /usr/lib/syslinux/pxelinux.0 /tftpboot/

    #启动tftp服务/etc/init.d/xinetd restart