Subject: Re: [IPFIX] FW: [dispatch] Session recording in SIP

From: "Saverio Niccolini" <[email-masked]>
Date: Tue, 16 Jun 2009 10:39:31 +0200

Regarding the SIPFIX draft Sven was talking about:

we will submit it shortly, the idea is basically as Kobayashi-san
was hinting:

-- trying to define the problem statement and requirements since
we see the need of starting to use the current IPFIX definitions
for monitoring VoIP systems

What can come from there? an informational document trying to define
the problem space and maybe moving from there a standard deifntion
of new VoIP-specific IEs.

Just my two cents (just with a couple of days to see the draft).

Cheers,
Saverio

> Hi Gerhard, Sven, and all,
>
> In my opinion, although any networks, especially carrier network,
> transmit a large amount of VoIP and IPTV packets which are sensitive
> about network performance, there is no effective passive monitoring
> method regretfully. Although IPFIX/PSAMP covers the QoS measurement, its
> implementation has not appeared so far. I believe IPFIX can play a role
> for this work.
>
> We can try making the reference model of measurement infrastructure
> using current existing IPFIX/PSAMP specification, such as PSAMP selector,
> IPFIX-CONFIG, and mediation to encourage the implementation.
>
> It might start from problem statement, or come out some informational
> documents, and standard document describing some new information
> elements.
>
> Regards,
> Atsushi KOBAYASHI

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NEC Laboratories Europe, Network Research Division     
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