After spending a couple of days on this now, I have determined that MRTG, when used alone, does not show this behavior. The problem is only with MRTG + RRDTOOL + 14all.cgi. I've even downloaded and set up the newest versions of each only to get the same result. Does anyone how I can have RRDTOOL and 14all.cgi follow the same logic as MRTG when creating graphs (eliminating this spike)?
More info on my setup: - Switches are Cisco Cat 4006 and 5XXX - Our NMS is resetting all port counters by doing an snmpset on private.1.9.5.1.1.13.0. Most people do not believe me, but this DOES reset the ifOctets value to 0, by design. ---------- Forwarded message ---------- Date: Fri, 24 Jan 2003 11:25:47 -0500 (EST) From: Scott P. Daffron <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: [mrtg] clearing of counters on Cisco Oh most wise MRTG gurus, We have noticed that our version of MRTG (a couple years old) shows a huge spike on our Cisco interface graphs whenever a "clear counters" is done on the device. This is becoming a big problem for us, as we have just implemented a new NMS which clears all counters once per day. I know this is an issue of the OID counter wrapping, leading MRTG to think that a massive bandwidth spike has indeed occurred, but is there a way to configure MRTG not to draw this conclusion (and alleviate all of the massive spikes in our graphs)? Does a newer version of MRTG handle this differently? I have looked high and low, but can't seem to find an answer on this. Thanks in advance... Scott Daffron Network Engineer Sentara Health Care -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
