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.TH ARPSNMP 8 "17 September 2000"
.UC 4
.SH NAME
arpsnmp \- keep track of ethernet/ip address pairings
.SH SYNOPSIS
.B arpsnmp
[
.B \-d
]
.\" **
.\" **
.br
.ti +8
[
.B \-f
.I datafile
]
.\" **
.\" **
.br
.ti +8
[
.B -s
.I sendmail_path
]
.\" **
.\" **
.br
.ti +8
[
.B \-m
.I addr
]
.\" **
.\" **
.br
.ti +8
.I file
[
.I ...
]
.SH DESCRIPTION
.B Arpsnmp
keeps track for ethernet/ip address pairings. It syslogs activity
and reports certain changes via email.
.B Arpsnmp
reads information from a file (usually generated by
.BR snmpwalk (8)).
.\" **
.\" **
.LP
The
.B \-d
flag is used enable debugging. This also inhibits mailing the reports.
Instead, they are sent to
.IR stderr .
.\" **
.\" **
.LP
The
.B \-f
flag is used to set the ethernet/ip address database filename.
The default is
.IR arp.dat .
.\" **
.\" **
.LP
(Debian) The
.B -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.
.\" **
.\" **
.LP
(Debian) The
.B \-m
option is used to specify the e-mail address to which reports will be
sent.  By default, reports are sent to
.I root
on the local machine.
.\" **
.\" **
.LP
Note that an empty
.I arp.dat
file must be created before the first time you run
.BR arpsnmp .
.LP
.SH "REPORT MESSAGES"
(See the
.BR arpwatch (1)
man page for details on the report messages generated by
.BR arpsnmp (1).)
.SH FILES
.na
.nh
.nf
/var/lib/arpwatch - default directory
IFNAME.dat - ethernet/ip address database observed on interface IFNAME
ethercodes.db - vendor ethernet block list
.ad
.hy
.fi
.SH "SEE ALSO"
.na
.nh
.BR arpwatch (8),
.BR snmpwalk (8),
.BR arp (8)
.ad
.hy
.SH AUTHORS
Craig Leres of the
Lawrence Berkeley National Laboratory Network Research Group,
University of California, Berkeley, CA.
.LP
The current version is available via anonymous ftp:
.LP
.RS
.I ftp://ftp.ee.lbl.gov/arpwatch.tar.gz
.RE
.SH BUGS
Please send bug reports to arpwatch@ee.lbl.gov.
.LP
Attempts are made to suppress DECnet flip flops but they
aren't always successful.