atmarpd [-b] [-d]
[-D directory] [-l logfile]
[-m] [-n]
atmarpd -V
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.
- -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.
- /var/run/atmarpd.table
- ATMARP table
- /proc/atm/arp
- table of currently active IP over ATM VCs
atmarpd removes ATMARP entries from the kernel table while
refreshing them.
Werner Almesberger, EPFL ICA
<werner.almesberger@epfl.ch>