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List:       openvswitch-discuss
Subject:    [ovs-discuss] NetFlow/IPFIX documentation
From:       romain.lenglet () oracle ! com (Romain Lenglet)
Date:       2014-10-30 17:37:12
Message-ID: etPan.54527748.4db127f8.34dd () rlenglet-mac
[Download RAW message or body]

On October 30, 2014 at 4:49:47 AM, Martin Vizvary (vizvary at \
ics.muni.cz(mailto:vizvary at ics.muni.cz)) wrote:
> 
> I have checked the export with tcpdump, but there was no communication
> on port 4002. Netflow on port 4001 is working fine. (some output is in
> attached file)
> 
> I am using FlowMon collector which supports NetFlow v5/v9, IPFIX, sFlow,
> NetStream and jFlow.
> 
> 
> IPFIX configuration:
> 
> ~# ovs-vsctl -- set Bridge br0 ipfix=@i -- --id=@i create IPFIX
> target=\"10.10.10.5:4002\" obs_domain_id3 obs_point_idE6
> cache_active_timeout 
> 
> ~# ovs-vsctl list IPFIX
> _uuid : fc9e8f46-d733-4a37-8dd1-669d7a5e6466
> cache_active_timeout: 20
> cache_max_flows : []
> external_ids : {}
> obs_domain_id : 123
> obs_point_id : 456
> sampling : []
> targets : ["10.10.10.5:4002"]

Which versions of ovs-vswitchd and kernel module are you using?

For debugging, please try setting a 100% sampling probability (sampling=1) instead of \
the default 0.25%, and a lower cache_active_timeout.

Since you didn't set cache_max_flows, flow caching is disabled.
You might want to try setting a non-zero value so that caching is enabled and the \
active timeout is actually applied.

Please look in the ovs-vswitchd logs. Are there error messages related to IPFIX \
export?

Then, I'd check that OVS correctly adds "sample" actions into each datapath flow, \
which should be the case if IPFIX export is enabled on the bridge. To do that, please \
copy the output of "ovs-dpctl dump-flows" while sending some packets.

Thanks,
—
Romain Lenglet


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