ARPSNMP(8)		    System Manager's Manual		    ARPSNMP(8)



NAME
       arpsnmp - keep track of ethernet/ip address pairings

SYNOPSIS
       arpsnmp	[  -d ] [ -f datafile ] [ -e username ] [ -s username ] file [
       ...  ]

DESCRIPTION
       Arpsnmp keeps track for ethernet/ip address pairings. It syslogs activ-
       ity  and	 reports certain changes via email.  Arpsnmp reads information
       from a file (usually generated by snmpwalk(1)).

       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.

       Note that an empty arp.dat file must be created before the  first  time
       you run arpsnmp.

       If  the	-e  flag  is  used,  arpsnmp sends e-mail messages to username
       rather than the default (root).	If a single `-' character is given for
       the  username,  sending of e-mail is suppressed, but logging via syslog
       is still done as usual.	(This can be useful during  initial  runs,  to
       collect data without being flooded with messages about new stations.)

       If  the -s flag is used, arpsnmp sends e-mail messages with username as
       the return address, rather than the default (root).

REPORT MESSAGES
       (See the arpwatch(8) man page for details on the report messages gener-
       ated by arpsnmp(8).)

FILES
       /var/lib/arpwatch - default directory
       arp.dat - ethernet/ip address database
       ethercodes.dat - vendor ethernet block list

SEE ALSO
       arpwatch(8), snmpwalk(1), arp(8)

AUTHORS
       Craig  Leres  of	 the Lawrence Berkeley National Laboratory Network Re-
       search Group, University of California, Berkeley, CA.

       The current version is available via anonymous ftp:

	      ftp://ftp.ee.lbl.gov/arpwatch.tar.gz

BUGS
       Please send bug reports to arpwatch@ee.lbl.gov.

       Attempts are made to suppress DECnet flip flops but they aren't	always
       successful.



4th Berkeley Distribution      17 September 2000		    ARPSNMP(8)