Network PXE load for SCO 5.0.6

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LEARN ABOUT FREEBSD

pxeboot

PXEBOOT(8)						    BSD System Manager's Manual 						PXEBOOT(8)

NAME

     pxeboot -- Preboot Execution Environment (PXE) bootloader

DESCRIPTION

     The pxeboot bootloader is a modified version of the system third-stage bootstrap loader(8) configured to run under Intel's Preboot Execution
     Environment (PXE) system.	PXE is a form of smart boot ROM, built into Intel EtherExpress Pro/100 and 3Com 3c905c Ethernet cards, and Ether-
     net-equipped Intel motherboards.  PXE supports DHCP configuration and provides low-level NIC access services.  The pxeboot bootloader
     retrieves the kernel, modules, and other files either via NFS over UDP or by TFTP, selectable through compile-time options.  In combination
     with a memory file system image or NFS-mounted root file system, pxeboot allows for easy, EEPROM-burner free construction of diskless
     machines.

     The pxeboot binary is loaded just like any other boot file, by specifying it in the DHCP server's configuration file.  Below is a sample con-
     figuration for the ISC DHCP v2 server:

	   option domain-name "example.com";
	   option routers 10.0.0.1;
	   option subnet-mask 255.255.255.0;
	   option broadcast-address 10.0.0.255;
	   option domain-name-servers 10.0.0.1;
	   server-name "DHCPserver";
	   server-identifier 10.0.0.1;

	   default-lease-time 120;
	   max-lease-time 120;

	   subnet 10.0.0.0 netmask 255.255.255.0 {
		  filename "pxeboot";
		  range 10.0.0.10 10.0.0.254;
	   }

     pxeboot recognizes next-server and option root-path directives as the server and path to NFS mount for file requests, respectively, or the
     server to make TFTP requests to.  Note that pxeboot expects to fetch /boot/loader.rc from the specified server before loading any other
     files.

     In all other respects, pxeboot acts just like loader(8).

     As PXE is still in its infancy, some firmware versions may not work properly.  The pxeboot bootloader has been extensively tested on version
     0.99 of Intel firmware; pre-release versions of the newer 2.0 firmware are known to have problems.  Check with the device's manufacturer for
     their latest stable release.

     For further information on Intel's PXE specifications and Wired for Management (WfM) systems, see http://www.intel.com/design/archives/wfm/.

SEE ALSO

     loader(8)

HISTORY

     The pxeboot bootloader first appeared in FreeBSD 4.1.

AUTHORS

     The pxeboot bootloader was written by John Baldwin <jhb@FreeBSD.org> and Paul Saab <ps@FreeBSD.org>.  This manual page was written by Doug
     White <dwhite@FreeBSD.org>.

BSD
								    May 1, 2000 							       BSD

SCO