[ovs-discuss] OVS - Netflow/IPFix export of custom metadata.

Motonori Shindo motonori at shin.do
Fri Sep 13 13:41:22 UTC 2019


OVS supports NetFlow V5 and IPFIX (a.k.a. NetFlow v10). NetFlow V5 as a
protocol can't export information other than the pre-defined information
element such as src/dst IP address, src/dst port number, protocol, nexthop
address, input/output interface, etc. IPFIX, on the other hand, has
extensibility and can export additional information. However, IPFIX in OVS
only exports information similar to NetFlow V5. It doesn't have a
configuration knob to have it export additional information element.


Motonori Shindo

2019年9月13日(金) 21:01 Rajesh Kumar <rajesh.kumar at certesnetworks.com>:

> Hi,
> The inbuilt OVS netflow export feature seems to export the 5 basic info
> present in the packet  (src dst mac,src dst IP, port).
> Is there any option to export other data present in a packet.
> Without OVS, I was able to do netflow export using a tool called pmacctd.
> It supported exporting basic netflow data and custom metadata (this was
> present as part of the packet itself at specific byte location). There was
> a way to specify custom data with packet pointer bytes, length in pmacctd
> tool. Just wanted to check whether any such option in current OVS setup.
> Thanks,
> Rajesh kumar S R
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