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checkmk local check - bash script to count arp entries on a router

#!/bin/bash
arpentries=`/usr/bin/snmpwalk -c public -v 2c 192.168.99.1 IP-MIB::ipNetToMediaNetAddress |wc -l`
echo "0 arp-entries-192.168.99.1 arp=$arpentries number of arp entries from 192.168.99.1 is $arpentries"


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to run the script as a checkmk local job > put this script to directory /usr/lib/check_mk_agent/local of your checkmk agent installation

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