Provided by: rpld_1.8beta1-8.1ubuntu1_amd64 bug

NAME

     rpld — an RPL/RIPL remote boot server

SYNOPSIS

     rpld [-f] [-C configfile] [-i iface] [-s sap] [-h]

WARRANTY

     rpld DOES NOT come with ANY WARRANTY, NOT even an IMPLIED WARRANTY.

OPTIONS

     -f              this flag causes rpld to run in the foreground, and not to fork and run as a
                     daemon.

     -C configfile   causes rpld to read configfile rather than the default configuration file.

     -i iface        causes rpld to bind to network interface iface rather than the default.
                     Because of the limitations of the LLC 802.2 protocol rpld can only bind to
                     one interface.

     -s sap          changes the SAP number that rpld binds to. The IBM standard says this should
                     be 0xf8 but most network cards seem to use 0xfc and some even use 0xf4. You
                     can specify the sap as either a hex number with a leading 0x or a decimal
                     one. Beware of specificing a SAP number which is used for system control
                     packets on a machine with native llc support.

     -h              causes rpld to print a brief help message.

DESCRIPTION

     rpld will net-boot IBM style RPL boot ROMs. Communication between the client and the server
     is done in LLC-1 ui/C frames with the source and destination SAP both being 0xfc. On booting
     the client transmits a FIND frame containing the client's MAC address, adapter type and
     frame length. The server replies with a FOUND frame containing the server's MAC address and
     a possibly smaller frame length. The client issues a SEND.FILE.REQUEST frame requesting the
     first block of the boot file. The server then issues a sequence of FILE.DATA.RESPONSE frames
     with increasing block numbers. The FILE.DATA.RESPONSE frames contain a load address and an
     execute address and a flag. If the client fails to receive a FILE.DATA.RESPONSE frame within
     a certain period it sends another SEND.FILE.REQUEST frame requesting the block which follows
     the last block that was successfully received. On the last FILE.DATA.RESPONSE frame the
     server sets a special value of the flags which cause the client to transfer execution to the
     execute address specified in the frame.

     The server starts by reading the configuration file in /etc/rpld.conf, see rpld.conf(5),
     After the configuration file has been read, it opens the system's default network interface
     and listens for RPL frames.  The server recalculates the length of all the files to be
     downloaded every time it receives a SEND.FILE.REQUEST frame.

BUGS

     rphleddoesn'tlptyoodstetrtkvheeoaccleitsiuxwaiklelrone.theapacingyvalue of the slowest
     rprltdianeedshtonmeetdmoresnetworkladapters.ified in bits not bytes.

NOTES

     IBM is a trademark of IBM Corp.

     and the makefile in the distribution for more information.

FILES

     /usr/sbin/rpld
     /etc/rpld.conf
     /rplboot

SEE ALSO

     rpld.conf(5),
     bootpd(1),
     dhcpd(1),
     http://gimel.esc.cam.ac.uk/james/rpld;

AUTHORS AND COPYRIGHT

     (c) 1999,2000 James McKenzie, and Christopher Lightfoot. All rights reserved.