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<span style="font-weight:bold">From: </span>Greg Cory <<a href="mailto:gscjunk@gcmuni.net">gscjunk@gcmuni.net</a>><br>
<span style="font-weight:bold">Date: </span>Monday, May 19, 2014 at 11:41 AM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:mrtg@lists.oetiker.ch">mrtg@lists.oetiker.ch</a>" <<a href="mailto:mrtg@lists.oetiker.ch">mrtg@lists.oetiker.ch</a>><br>
<span style="font-weight:bold">Subject: </span>[mrtg] Looking for some advice on the gaps we get in MRTG graph at peak traffic<br>
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<p class="MsoNormal">We have mrtg set up and running, it’s been working good till a few months ago as our traffic increased.<o:p></o:p></p>
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<p class="MsoNormal">Now during the peak of our traffic the mrtg graphs get some gaps in them. Usually ever night around 19:00 to 22:00.</p>
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<div>Probably when backups run….</div>
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<div>I would guess that you are using snmp v1 instead of snmpv2 or v3. Thus, you have 32-bit counters instead of 64bit. In a 5 minute period they roll over twice when you exceed about 130mb/s. The solutions are to switch to 64-bit counters (by changing the
snmp version to 2 or setting up the whole snmp v3 thing). Or change the polling interval from 5 minutes to 1 minute , which would let you poll a circuit with about 620mb/s before it would roll over twice between 1-minute polls.<span style="font-size: 11pt;"> </span></div>
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