[mrtg] Re: Data Collection Size Limitation?

[Dana Huggard]

Hi, How does one use 64-bit counters?  I see the same problem with some
Gigabit interfaces I have on some Cisco switches.  I used cfgmaker to create
the config files.    
 

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch] On
Behalf Of Pete Templin
Sent: Tuesday, May 09, 2006 8:04 AM
To: Scott Moseman
Cc: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: Data Collection Size Limitation?

Scott Moseman wrote:
> http://img250.imageshack.us/my.php?image=router8qq.gif
> 
> Between 00:00 and 04:00 you can see the problem.  The same problem 
> appears every day during the same approximate window (during our 
> really busy hours).  The interface is GigE and I'm using an AbsMax of 
> about 10Gb to make sure we're not going beyond the bounds.
> 
> There's actually data being graphed, so I know it's not going beyond 
> MaxBytes and ignoring the results.  I was wondering what the data size 
> limit is for MRTG?  Maybe I'm going above some threshold value and 
> it's messing up the data collection?

About 119Mbps; it's the limit of 32-bit counters, not MRTG.  Use the 64-bit
SNMPv2 counters and you're fine.

pt

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