Hi,
Thanks for your replies.
I've double-checked the speed and am calculating incoming and outgoing
separately, using the formula :
(ifInOctets * 8 / ifSpeed ) * 100% and ifOutOctets for outgoing
utilization.
Although data collection is done sequentially, it still does not
explain how it can be above the speed. How do I check the counter?
Diba
Douglas Stevenson wrote:
>
> I've run into this...
>
> Check to ensure that the Spped is set to the proper setting on the device
> itself... ie.. it is possible on some devices to set the speed of an
> Ethernet (within the agent) to say 56000... While the actual speed may be
> 10,000,000...
>
> Also, if you are looking at utilization on full duplex interfaces, each
> side must be calculated separately as it can transmit and receive
> simultaneously.
>
> HTH,
>
> Doug...
>
> At 08:45 AM 11/9/98 -0800, Connie Logg wrote:
> >I have run into this anomaly occasionally. I explain it by observing that
> >the data taking is sequential and thus not simultaneous, thus in high
> >utilization scenarios, the utilization can calculate out to be greater than
> >100%.
> >
> >Also one must be careful about counter wrapping.
> >
> >
> >At 09:18 AM 11/9/98 +0100, you wrote:
> >>What is your expression for the utilization ?
> >>
> >>Uwe
> >>
> >>>===== Original Message From Adibah Mohamed <SMTP:NV-L@UCSBVM.UCSB.EDU>
> =====
> >>>Hi,
> >>>
> >>> Has anyone encountered instances where utilisation goes beyond 100%?
> >>>I know my formula is correct but why do I get a spike in my utilisation
> >>>which goes above 100%. Is there a way to cap it at 100%?
> >>>
> >>>Diba
> >>
> >*********************************************************************
> >" Of course the opinions expressed here are my own. "
> >
> >Connie Logg CAL@SLAC.Stanford.Edu ph: 650-926-2879
> >Network Management and Performance Analyst
> >SLAC (MS 97), P.O. Box 4349, Stanford, CA 94309
> >
> >"Happiness is found along the way, not at the end of the road."
> >
>
> ___________
> Douglas W. Stevenson
> Managing Consultant - Enterprise Management
> Predictive Systems Inc.
> 620 Herndon Parkway
> Suite 360
> Herndon, VA 20170
> (703)925-1600
> (703)925-1899 (Fax)
> http://www.predictive.com
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