<div class="gmail_quote">On Tue, Apr 12, 2011 at 2:58 PM, <<a href="mailto:Jason.Shaffer@crown.com">Jason.Shaffer@crown.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> I am having problems with the checksnmp command, I am running some check_snmp commands against our DHCP server. In this specific instance I want a warning if the value is 17:23 and a critical if the value is 0:16, regardless of how i type it in, I get a critical message. Any ideas? ./check_snmp -C s8n1mp -H Corp208 -o .1.3.6.1.4.1.311.1.3.2.1.1.3.172.20.2.0 -w 17:23 -c 0:16 SNMP CRITICAL - *97* | iso.3.6.1.4.1.311.1.3.2.1.1.3.172.20.2.0=97c </blockquote></div> What does this OID represent, and what is the scale in which it reports? Try starting both ranges at 0: ./check_snmp -C s8n1mp -H Corp208 -o .1.3.6.1.4.1.311.1.3.2.1.1.3.172.20.2.0 -w 0:23 -c 0:16 Critical values override Warning values, so it doesn't matter if they overlap. -Mike