NAME

       atmarpd - ATMARP demon

SYNOPSIS

       atmarpd [-b] [-d] [-D directory] [-l logfile] [-m] [-n]
       atmarpd -V

DESCRIPTION

       atmarpd  implements  the ATMARP protocol as specified in RFC1577 and RFC1755. Address resolution requests
       are sent from the kernel (using a comparably simple protocol) to the ATMARP demon,  which  then  performs
       the dialog with the network.

       atmarpd  can operate as an ATMARP client and as an ATMARP server.  If also supports the concurrent use of
       several IP over ATM interfaces.

       atmarpd is configured from the command line using the atmarp program. Unless debugging  is  enabled,  the
       ATMARP table is written after every change to the file /var/run/atmarpd.table (or to a file with the same
       name in a different directory, if the -D option is used).

       Note  that atmarpd disables support for SVCs if signaling is not available at start time, i.e. if atmsigd
       is not running.

OPTIONS

       -b     Run in background (i.e. in a forked child process) after initializing.

       -d     Enables (lots of) debugging output. By default, atmarpd is comparably quiet.

       -D dump_dir
              Changes the directory where atmarpd writes its table  (atmarpd.table).  By  default,  /var/run  is
              used.

       -l logfile
              Write  diagnostic  messages  to  the specified file instead of to standard error. The special name
              syslog is used to send diagnostics to the system logger.

       -m     Enables merging of incoming calls if the address is known.  An incoming  connection  on  which  no
              InARP  reply  has  been received yet, but which originates from an ATM address for which an ATMARP
              entry already exists, is automatically added to that entry. This  assumes  that  there  is  a  1:1
              mapping  between IP addresses and ATMARP addresses. By default, this assumption is not made, which
              frequently results in the setup of duplicate connections.  Note  that  RFC1577  requires  that  an
              ATMARP  server  sends  an  InARP  request on an incoming connection. Merging may therefore violate
              RFC1577 in this case.

       -n     Prints addresses in numeric format only, i.e. no address to name translation is attempted.

       -V     Prints the version number of atmarpd on standard output and exits.

FILES

       /var/run/atmarpd.table   ATMARP table
       /proc/atm/arp            table of currently active IP over ATM VCs

BUGS

       atmarpd removes ATMARP entries from the kernel table while refreshing them.

AUTHOR

       Werner Almesberger, EPFL ICA <werner.almesberger@epfl.ch>

SEE ALSO

       atmarp(8), atmsigd(8)

Linux                                            April 26, 2000                                       ATMARPD(8)