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#!/bin/sh
# @(#) $Header: arpfetch,v 1.3 96/11/07 17:39:10 leres Exp $ (LBL)
#
# arpfetch - collect arp data from a cisco using snmpwalk
#
if test $# -ne 2; then
echo "usage: $0 host cname"
exit 1
fi
#
host=$1
cname=$2
temp=/tmp/arpfetch.temp.$$
errs=/tmp/arpfetch.errs.$$
what="ip.ipNetToMediaTable.ipNetToMediaEntry.ipNetToMediaPhysAddress"
#
# Get the data
#
snmpwalk -v 1 $host $cname $what > $temp 2>&1
#
# Try to make up for the fact that snmpwalk doesn't write errors to stderr
#
grep -v $what $temp > $errs
if test -s $errs; then
cat $errs 1>&2
rm -f $temp $errs
exit 1
fi
#
# Convert the results
#
sed -e 's/^ip\.ipNetToMediaTable\.ipNetToMediaEntry\.ipNetToMediaPhysAddress\.[0-9][0-9]*\.//' \
-e 's/ = *Hex: /=/' \
-e 's/ *$//' \
-e 's/ /:/g' \
-e 's/\(.*\)=\(.*\)/\2 \1/' \
-e 's/:0/:/g' \
-e 's/^0//' $temp | \
tr A-Z a-z
#
rm -f $temp $errs
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