[mrtg] Re: Gaps in traffic graphs

[Peter P. Benac]

Kristjan,

    I think your looking at the graphs wrong.  It is quite possible that
they aren't "gaps", but low points.  Considering the 79K spike and your
traffic averages less then 4-5K, the lower traffic ranges (< 1K) will appear
to be "gaps".  This will be consistent even with the daily graphs.

    Depending on the functionality of the devices on this interface there
may well be times when there appears to be gaps simply because these devices
aren't sending or receiving any traffic.

    What are the devices on this interface?  Are there Switches beyond this
Ethernet interface?  If so, are they Spanning Tree Aware?  

Regards,
Pete
----
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> -----Original Message-----
> From: mrtg-bounce at list.ee.ethz.ch 
> [mailto:mrtg-bounce at list.ee.ethz.ch] On Behalf Of Kristjan Thordarson
> Sent: Tuesday, August 05, 2003 7:30
> To: mrtg at list.ee.ethz.ch
> Subject: [mrtg] Gaps in traffic graphs
> 
> 
> Hi all.
> Please look at the attached traffic graph from a Cisco 1720 
> router (FastEth0).  Anyone seen these kinds of "gaps" in 
> their monitoring?  I'm monitoring about 20-30 routers from a 
> linux box and this box is the only one returning these 
> graphs.  However I also monitor memory and CPU on this box 
> and those graphs are OK.  
> 
> Any ideas?
> 
> Regards,
> Kristjan
> 
> -- Attached file removed by Ecartis and put at URL below --
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> 
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