i tried that aswell, has no effect. And when i use tcpdump i can also
verify that the zmq connections are ok

On Fri, Jun 17, 2016 at 12:25 PM, Simone Mainardi <maina...@ntop.org> wrote:

> Hi,
>
> According to the information shown, it may be that ntopng is not able to
> fetch monitored flows from the nProbe. I would try to bind the nProbe to
> any address (--zmq tcp://*:5557) and see if ntopng can see the traffic.
>
> Simone
>
>
>
> On Mon, Jun 13, 2016 at 1:03 PM, Enrico Kern <enrico.k...@glispamedia.com>
> wrote:
>
>> Hi,
>>
>> i have some weird issue with sflow data,
>>
>> i try to get nprobe and ntopng working with sflows exported from an
>> Arista Switch. I installed the latest versions from the centos repository:
>>
>> nprobe-7.3.160613-5264.x86_64
>> ntopng-2.3.160613-1231.x86_64
>>
>> and launch nprobe:
>>
>> nprobe --zmq "tcp://127.0.0.1:5557" -i none -n none --collector-port
>> 6343 --verbose 2 --dump-stats -nf -V5 -b 2
>>
>> and ntop:
>>
>>
>> ntopng -i tcp://127.0.0.1:5557 -d /var/tmp -w 3001
>>
>>
>> on the ntop webinterface i see no traffic at all. I confirmed that zeromq
>> receives packets with tcpdump and also see the sflow packets coming in.
>> nprobe also sees the flows and reports that for each new flow:
>>
>> 13/Jun/2016 12:54:27 [engine.c:2570] New Flow: [tcp] 192.168.1.6:59339
>> -> 192.168.1.7:6800 [AC:16:2D:71:xx:xx -> 00:50:56:AF:xx:xx][vlan
>> 900][tos 0][ifIdx: 1000011 -> 1000003][subflowId:
>> 0/0x0000][idx=68177][firstSeen=1465815267/0]
>>
>> as example. But the flows never get exported. If i stop nprobe it says
>> that:
>>
>> 13/Jun/2016 12:56:35 [cache.c:1224] Redis Cache [0 total/0.0 get/sec][0
>> total/0.0 set/sec]
>> 13/Jun/2016 12:56:35 [nprobe.c:5326] Still allocated 0 hash buckets
>> 13/Jun/2016 12:56:35 [nprobe.c:2698] Processed packets: 6 (max bucket
>> search: 0)
>> 13/Jun/2016 12:56:35 [nprobe.c:2681] Fragment queue length: 0
>> 13/Jun/2016 12:56:35 [nprobe.c:2707] Flow export stats: [0 bytes/0
>> pkts][0 flows/0 pkts sent]
>> 13/Jun/2016 12:56:35 [nprobe.c:2714] Flow collection: [collected pkts:
>> 147][processed flows: 0]
>> 13/Jun/2016 12:56:35 [nprobe.c:2717] Flow drop stats:   [0 bytes/0
>> pkts][0 flows]
>> 13/Jun/2016 12:56:35 [nprobe.c:2722] Total flow stats:  [0 bytes/0
>> pkts][0 flows/0 pkts sent]
>>
>>
>> so while it received 147 pakets it did not process a single flow.
>>  tcpdump also shows me the flows:
>>
>> # tcpdump port 6343
>> tcpdump: WARNING: eth0: no IPv4 address assigned
>> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
>> listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
>> 12:57:58.378005 IP x.10780 > target.sflow: sFlowv5, IPv4 agent xxxx,
>> agent-id 9, length 1201
>> 12:57:58.800558 IP 5x.10780 > target.sflow: sFlowv5, IPv4 agent xxxx,
>> agent-id 1, length 253
>> 12:57:59.800595 IP x.10780 > target.sflow: sFlowv5, IPv4 agent xxxx,
>> agent-id 9, length 1201
>> 12:58:00.505019 IP x.10780 > target.sflow: sFlowv5, IPv4 agent xxxx,
>> agent-id 9, length 1201
>> 12:58:00.800634 IP x.10780 > target.sflow: sFlowv5, IPv4 agent xxxx,
>> agent-id 1, length 253
>>
>>
>> I have no issues if i use the arista flows with prtg, imtech analyzer or
>> solarwinds. Just ntop doesnt like it. Fun is if i use nprobe with an pcap
>> file it seem to proceess at least 1 flow:
>>
>> # nprobe -i sflow.pcap
>>
>> 13/Jun/2016 13:01:19 [cache.c:1224] Redis Cache [0 total/0.0 get/sec][0
>> total/0.0 set/sec]
>> 13/Jun/2016 13:01:19 [nprobe.c:2698] Processed packets: 61 (max bucket
>> search: 0)
>> 13/Jun/2016 13:01:19 [nprobe.c:2681] Fragment queue length: 0
>> 13/Jun/2016 13:01:19 [nprobe.c:2707] Flow export stats: [72589 bytes/61
>> pkts][1 flows/1 pkts sent]
>> 13/Jun/2016 13:01:19 [nprobe.c:2717] Flow drop stats:   [0 bytes/0
>> pkts][0 flows]
>> 13/Jun/2016 13:01:19 [nprobe.c:2722] Total flow stats:  [72589 bytes/61
>> pkts][1 flows/1 pkts sent]
>>
>>
>> i played around now with this for almost a day, i have no idea anymore, i
>> dont think im doing something wrong and followed the documentation and
>> googled like hours  but no result. I also tried that first on ubuntu 14.04
>> before i ended up now on CentOS 6.x on a complete different machine just to
>> rule out issues, but its the same on both installations.
>>
>> Anyone an idea?
>>
>> Thanks in advance!
>>
>> Regards.
>>
>> Enrico
>>
>>
>> --
>>
>> Enrico Kern
>>
>> Lead System Engineer
>>
>> glispa GmbH
>> Sonnenburger Straße 73
>> 10437 Berlin, Germany
>>
>> tel: +49 30 5557130-17
>> fax: +49 30 5557130-50
>> skype: flyersaenrico.k...@glispamedia.comwww.glispa.com
>>
>> __________________________________________
>> Sitz Berlin, AG Charlottenburg HRB 114678B
>>
>>
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>
>
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-- 

Enrico Kern

Lead System Engineer

glispa GmbH
Sonnenburger Straße 73
10437 Berlin, Germany

tel: +49 30 5557130-17
fax: +49 30 5557130-50
skype: flyersaenrico.k...@glispamedia.comwww.glispa.com

__________________________________________
Sitz Berlin, AG Charlottenburg HRB 114678B
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