arpsnmp - keep track of ethernet/ip address pairings
arpsnmp [ -d ]
[ -f datafile ]
[ -s sendmail_path ]
[ -m addr ]
file [ ... ]
Arpsnmp keeps track for ethernet/ip address pairings. It syslogs
activity and reports certain changes via email. Arpsnmp reads
information from a file (usually generated by snmpwalk(8)).
The -d flag is used enable debugging. This also inhibits mailing the
reports. Instead, they are sent to stderr.
The -f flag is used to set the ethernet/ip address database filename.
The default is arp.dat.
(Debian) The -s flag is used to specify the path to the sendmail
program. Any program that takes the option -odi and then text from
stdin can be substituted. This is useful for redirecting reports to log
files instead of mail.
(Debian) The -m option is used to specify the e-mail address to which
reports will be sent. By default, reports are sent to root on the
Note that an empty arp.dat file must be created before the first time
you run arpsnmp.
(See the arpwatch(1) man page for details on the report messages
generated by arpsnmp(1).)
/var/lib/arpwatch - default directory
arp.dat - ethernet/ip address database
/usr/share/arpwatch/ethercodes.dat - vendor ethernet block list
arpwatch(8), snmpwalk(8), arp(8)
Craig Leres of the Lawrence Berkeley National Laboratory Network
Research Group, University of California, Berkeley, CA.
The current version is available via anonymous ftp:
Please send bug reports to firstname.lastname@example.org.
Attempts are made to suppress DECnet flip flops but they aren’t always