Installation guide
tftp is an xinetd-based service; start it with the following commands:
/sbin/chkconfig --level 345 xinetd on
/sbin/chkconfig --level 345 tftp on
These commands configure the tftp and xinetd services to immediately turn on and also
configure them to start at boot time in runlevels 3, 4, and 5.
34 .5. Configuring t he DHCP Server
If a DHCP server does not already exist on the network, configure one. Refer to the Red Hat Enterprise
Linux Deployment Guide for details. Make sure the configuration file contains the following so that
PXE booting is enabled for systems which support it:
allow booting;
allow bootp;
class "pxeclients" {
match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
next-server <server-ip>;
filename "linux-install/pxelinux.0"; }
where the next-server <server-ip> should be replaced with the IP address of the tftp server.
34 .6. Adding a Cust om Boot Message
Optionally, modify /tftpboot/linux-install/msgs/boot.msg to use a custom boot message.
34 .7. Performing t he PXE Inst allat ion
For instructions on how to configure the network interface card with PXE support to boot from the
network, consult the documentation for the NIC. It varies slightly per card.
Chapt er 34 . PXE Net work Inst allat ions
351