All, I am using check_snmp_int.pl from <a href="http://www.manubulon.com/nagios/snmp_int.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.manubulon.com/nagios/snmp_int.html</a> to query network interfaces on Windows machines. I run this bash-3.00$ ./check_snmp_int.pl -H 172.xx.xx.xx -C public -n "Intel$R$ PRO\/1000 CT Network Connection" -B -f -w 0,0 -c 0,0 and get this result Intel(R) PRO/1000 CT Network Connection:UP:1 UP: OK | 'Intel(R) PRO/1000 CT Network Connection_in_octet'=3870538451c 'Intel(R) PRO/1000 CT Network Connection_out_octet'=1949658650c My problem is that the performance data contains the name of the interface and I think the ( ) and / characters are killing the perl script that processes the performance data. Is there a way to change the SNMP network interface description on the Windows machine to remove the brackets and forward slash ? Or alternatively has anyone modified check_snmp_int.pl to query Windows without requiring the network interface description ? Thanks Peter Edmonds