Hello Eric

The behavior you're describing is strange but it makes me thinking that 
this kind of card on the M7i has 4 ports with over subscription (the 
total bandwidth for the card is 1gig) so divided by 4,  it gives each 
port about 250M bps !


I don't know if this is the reason of your problem and it can seem to be 
a silly way to think about it but you should have this in mind.

Alain


Eric Van Tol a écrit :

>Hi all,
>I'm having some trouble graphing traffic stats from a PE-4GE-TYPE1-SFP-IQ2 
>from multiple network monitoring boxes.  The issue seems to be that when the 
>traffic for one of the ports on the PIC reaches > ~200Mb/s the graphs become 
>jagged.  I am using SNMPv2, as well as 64-bit counters.  Stats on other 
>non-IQ2 PICs seem to work fine at >200M.  This one particular interface has 
>MAC accounting enabled, but I doubt that's the problem.  I'm on an M7i running 
>8.5R1.13.
>
>Has anyone else come across this?  I looked through the JUNOS bugs and 
>couldn't really find anything relevant.  I'm pretty sure that it's not my NMS 
>or how I'm graphing, as I have three different sources (MRTG, Cacti, and 
>Solarwinds Orion) currently graphing the interface and all show the same 
>jagged results.
>
>-evt
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