That works for the 2.5 GB download. But I have another download - a
replication job, that lasts ~12 hours. A real time flow display shows it in
progress, but a historical view of the same time frame does not show that
replication job at all. Is that because the flow has been in progress for
12+hours ??

On Tue, Sep 16, 2014 at 10:37 AM, Filippo Fontanelli <[email protected]>
wrote:

> Neil,
> As you can read in the ntopng user guide, ntopng save the expired flows
> every five minute in a SQLite db.
>
> Probably in your case, if the downloading process during more than 5
> minute, you have to set the time interval from 9:30 to 9:40.
>
> Please can you try and let me know?
>
> Regards
> Filippo
>
> On Tuesday, September 16, 2014, Neil Page <[email protected]> wrote:
>
>> NtopNG v. 1.2.2 (r8210)
>> I'm seeing a huge inconsistency between what is displayed in a live flow
>> compared to what is displayed in a 5-minute historical flow on the same
>> interface during the same time frame.
>>
>> This is all done using a second NIC, in promiscuous mode, sniffing
>> traffic on a mirrored port on a switch.
>>
>> I've been experimenting with this a lot lately, and it's 100%
>> reproducible. I set my ntopng collector interface to eth1 (the sniffing
>> interface). Ntopng runs fine - and the live flows are very accurate. I use
>> a test host to download a very large 2.5 GB file from the internet. The
>> live flow shows this download very accurately. The download starts at 09:30
>> and takes just over 5 minutes to complete. I wait until around 09:45 then I
>> change the ntopng interface to "Historical". I then load the data between
>> 09:30 and 09:35. I then examine the flows; there is  _NOTHING_  there
>> regarding that huge 2.5 GB download. The host never shows up, the download
>> itself is never listed. Nothing.
>>
>> Can you help me understand why this might happen?  I need the historical
>> dumps to be accurate for diagnostic purposes.
>>
>> Thanks in advance,
>> Neil
>>
>
>
> --
> Filippo
>
> Sent from my iPhone,
> sorry for typos.
>
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