[mrtg] Re: Spike when counter rolls over?

Pete Templin pete.templin at texlink.com
Wed Dec 17 16:05:01 MET 2003


I see the same thing all the time.  I've been told that certain versions of MRTG do have rollover problems, but I never dug deep enough to figure out which ones provide a fix.

Pete Templin
Senior Staff Engineer
TexLink Communications
(210) 892-4183
pete.templin at texlink.com


-----Original Message-----
From: John Oliver [mailto:joliver at john-oliver.net]
Sent: Wednesday, December 17, 2003 4:20 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Spike when counter rolls over?

I got a huge spike on the LAN graph for my DI-604.  I'm 99.9% certain
that this is because the counter rolled over, not because there was a
sudden burst of traffic just between the two PCs connected to it... :-)
The thing is, though, that MaxBytes and AbsMax is set pretty high,
because it's a 100 Mb/s interface.  Is there any way to protect against
false spikes other than by setting these values lower?

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