perfsonar development work

[Maurizio Molina <>]

Hi,
and apologies for not having been able to come to the meeting (I was in
the parallel MCF session...).
please see inline.

Jon Kåre Hellan wrote:

> Here are the notes for the parallell session about flow monitoring at
> the JRA1 meeting in Cambridge 2006-01-12.
>
> Chair: Hans Trompert
> Note taker: Jon Kåre Hellan
>
> Agenda:
> 1. New metrics to be added to RRD flow MA
> 2. Use cases
> 3. Design of flow aggregation/selection MA
>
> 1. New metrics to be added to RRD flow MA
>
> The MA now does number of packets, flows and bytes. One request for
> each. Candidates for adding would be protocols, ports, top talkers,
> etc. Counters fit the RRD model, but rankings (top talkers) don't.
>
> UNINETT will wrap Stager as a perfSONAR archive during the summer of
> 2007. Stager offers rankings and a large number of aggregated
> statistics.
>
> The consensus was to extend the RRD flow MA with protocol info: TCP,
> UDP, IPv4, IPv6. Also diffserv if possible. More advanced statistics
> to come from Stager.
>
> 2. Use cases
>
> Some use cases were discussed:
>
> - Security.

>
> - Traffic matrix between sites participating in a project. Maurizio
>  Molina has shown a traffic matrix based on nfdump.

the tool is simple. I'm sure Stager can do something similar....or better!
However, the main benefit is that it has a simple web interface, and
doesn't require any SW instalation on the client side. Just a browser.
I will shortly open the tool for the APMs.
I also had some requests for sharing the code, and I'll do that. If this
can be of interest for JRA1 activity as well, just tell me.
Maurizio

>
> - Using netflow data to verify that the middleware actually starts
>  transferring data when a grid ftp transfer is requested. (Netflow
>  may be the wrong technology for this. There is a delay before flows
>  are emitted.)
>
> 3. Design of flow aggregation/selection MA
> Hans to circulate a document before the next JRA1 meeting.
>
> There was also a discussion about the legal constraints on sharing
> flow data. Most NRENs are likely to find that they have to be quite
> restrictive about what to share with others. But sharing is possible
> if the groups who are monitored consent to it.
>
>


-- 
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Maurizio Molina
Network Engineer

DANTE - www.dante.net

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