[mrtg] MRTG vs. Cricket

[Patrick Topping]

I have been polling the 64-bit counters from the beginning.  Below is a 
sample from the CFG file:

Target[xxx.xxx.xxx_TenGigabitEthernet10_4]: 
\TenGigabitEthernet10/4:XXXXX at XXXXX:::::2

I know that the graphs are off because I still have Cricket graphing the 
same devices as MRTG.  I left Cricket in place while I migrated 
everything over to MRTG.  When I look at the graphs on the same 10-gig 
interface and look at the actual 10-gig interface on the router, the 
Cricket graphs seem be more accurate.

I have changed the cron from running every 5 minutes to running every 
minute.  I will see how well this does and update the group from there.  
Thanks for all the help so far.

-Patrick

------------------------------------

Sean Cheesman wrote:
> Are you polling v2?  v2 uses 64 bit counters, versus 32 bit v1, which 
> isn't enough for anything over like 600Mbps (I don't recall the actual 
> rollover point).
> ------------------------------------------------------------------------
> *From:* mrtg-bounces at lists.oetiker.ch [mrtg-bounces at lists.oetiker.ch] 
> On Behalf Of Patrick Topping [ptopping at pobox.com]
> *Sent:* Friday, January 30, 2009 12:33 PM
> *To:* 'mrtg at lists.oetiker.ch'
> *Subject:* [mrtg] MRTG vs. Cricket
>
> I am hoping someone can help me out with this issue I am having.....  I
> am working on migrating from Cricket to MRTG.  So far so good except
> that the Cricket graphs are pretty spot on for a 5 minute interval while
> the MRTG graphs are anywhere from 600 Mbps to 1 Gbps off at peak time.
> For example, I have a 10-gig circuit that runs roughly at 7 Gbps a peak
> time.  Cricket graphs it damn near spot on.  MRTG is off by almost a
> full gig.
>
> I have checked the cron jobs and both services are running every 5
> minutes.  They are synced to NTP and the clocks are not off so they are
> both seeing the exact same data.  I have set up my CFG files to use the
> 64 bit counters.
>
> I have Googled for answers but not a lot out there on this topic.  I am
> hoping this is something small I have missed and can easily be fixed.
> Any ideas?  Thanks in advance.
>
> -Patrick
>
>
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