bihourly - track ethernet/ip address pairs
is a script that automates the operation of arpsnmp(8)
on a series of hostnames and then sending the
results to arpsnmp(8)
The result is a report of the current pairings between ip addresses and the
corresponding ethernet address of the network hardware as reported by
Activity is logged and noted changes are reported by
In its working directory bihourly
expects a file named list
contains a space separated list of hostnames to be queried and a file named
which holds the SNMP community name by which to query these
Contrary to the name, bihourly
does not run twice every hour. It runs
once each time it is invoked. For repeated operation bihourly
invoked on a periodic basis by a program like cron(1).
/var/lib/arpwatch - default working directory
list - file containing names of hosts to query
cname - file containing the SNMP community name by which to query
(8), arpfetch(8), snmpwalk
Please send bug reports to email@example.com.
Craig Leres of the Lawrence Berkeley National Laboratory Network Research Group,
University of California, Berkeley, CA.
The current version is available via anonymous ftp:
This manual page was contributed by Hugo Graumann.