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

Rajesh Kumar rajesh.kumar at certesnetworks.com
Fri Sep 13 14:09:34 UTC 2019


Thanks for the info Shindo

________________________________
From: Motonori Shindo <motonori at shin.do>
Sent: Friday, September 13, 2019 7:11:22 PM
To: Rajesh Kumar
Cc: ovs-discuss at openvswitch.org
Subject: Re: [ovs-discuss] OVS - Netflow/IPFix export of custom metadata.

Rajesh,

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.

Regards,

Motonori Shindo

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