[mrtg] Re: 32 versus 64 bit counters

[Charles Milhans]

Thank you for the clarification.  I am measuring 2 Gbps fibre channel
switches.  This device supports several MIBs from different organizations.
One MIB does have 64 bit counts.  I'll try it out with MRTG and compare to
the 32 bit counters.  I really appreciate this information.

Charlie Milhans

-----Original Message-----
From: tony bourke [mailto:tony at vegan.net]
Sent: Sunday, September 15, 2002 11:37 PM
To: Charles Milhans
Cc: 'mrtg at list.ee.ethz.ch'
Subject: Re: [mrtg] 32 versus 64 bit counters


Hi Charles,

Alex is right, 32 bit counters are much more reliable.  You should
probably only use a 64 bit counter if you have need to measure bandwidth
greater than 115 Mbps (assuming a 5-minute polling interval), since 32-bit 
counters can't handle more than that accurately.

Tony


On 
Fri, 13 Sep 2002, Charles Milhans wrote:

> Is there much difference in capturing performance data with MRTG using 32
> bit compared to 64 bit counters?  I found two different MIB definitions
for
> performance data on the same port but one definition is specified in 32
bit
> counters and the other is in 64 bit counters.
> 
> 
> 
> 
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