Mailing List Archive: Re: nProbe and ntopng

Hello

I have been trying to get these two products to collect sFlow data from our
Dell switches, but just can't get it working. I am currently running nProbe
with the following arguments:

nprobe --zmq tcp://127.0.0.1:5556 -i none -n none --collector-port 2055 -G

and ntopng with these arguments:

ntopng -G /var/tmp/ntopng.pid -e -i tcp://127.0.0.1:5556 -w 3000 -m
192.168.1.0/24 -n 1 -d /var/tmp/ntopng -q

When I log into ntopng I get absolutely nothing. When i run tcpdump -v I
also seem to only see traffic actually destined for the machine I am
running nProbe on. Assuming that the switch is correctly configured should
tcpdump be showing me the sflow traffic? If so, my assumption is incorrect.

Any help would be appreciated.

Thanks
Karl

Karl,
can you please add â€œ-b 2â€ to nProbe to see if flows are properly collected? Please note that we need packet samples in sflows (not just bytes and counters)

Regard Luca

> On 06 May 2016, at 09:35, Karl van der Schyff <karl@vanderschyff.net> wrote:
>
> Hello
>
> I have been trying to get these two products to collect sFlow data from our Dell switches, but just can't get it working. I am currently running nProbe with the following arguments:
>
> nprobe --zmq tcp://127.0.0.1:5556 <http://127.0.0.1:5556/> -i none -n none --collector-port 2055 -G
>
> and ntopng with these arguments:
>
> ntopng -G /var/tmp/ntopng.pid -e -i tcp://127.0.0.1:5556 <http://127.0.0.1:5556/> -w 3000 -m 192.168.1.0/24 <http://192.168.1.0/24> -n 1 -d /var/tmp/ntopng -q
>
> When I log into ntopng I get absolutely nothing. When i run tcpdump -v I also seem to only see traffic actually destined for the machine I am running nProbe on. Assuming that the switch is correctly configured should tcpdump be showing me the sflow traffic? If so, my assumption is incorrect.
>
> Any help would be appreciated.
>
> Thanks
> Karl
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