Subject: RE: [bmwg] FW: IETF BMWG Work Item Proposal forSIP PerformanceBen chmarking

From: [email-masked]
Date: Wed, 24 May 2006 13:52:14 -0400

Timmons

SIP control sessions without media is not a voice call.  Those of us now
performing SIP benchmarking are observing that call load is impacting media
performance, in certain devices, and media load is impacting call
performance, in certain devices.  We are even noticing this behavior in some
test equipment ;-)  To fully benchmark a SIP implementation it is necessary
to measure the benchmark metrics with variation to call and media load.  

Scott

-----Original Message-----
From: Player, Timmons [mailto:[email-masked]]
Sent: Wednesday, May 24, 2006 12:46 PM
To: Vijay K. Gurbani; Romascanu, Dan (Dan)
Cc: [email-masked]; [email-masked]; Moore, Sean
(Sean); [email-masked]; [email-masked]
Subject: RE: [bmwg] FW: IETF BMWG Work Item Proposal forSIP
PerformanceBenchmarking

While I realise that RTP has some extra fields and such for the
endpoints to track end to end performance, how would benchmarking RTP
flows be different than sending a bunch of UDP streams through a
device/network?

Seems like the useful metrics for RTP streams (packet loss, jitter,
latency/delay) are the same as what most test tools give you.
Or am I missing some useful RTP stream metrics?

Timmons 

> -----Original Message-----
> From: Vijay K. Gurbani [mailto:[email-masked]] 
> Sent: Wednesday, May 24, 2006 10:55 AM
> To: Romascanu, Dan (Dan)
> Cc: [email-masked]; [email-masked]; 
> [email-masked]; Moore,Sean (Sean); [email-masked]
> Subject: Re: [bmwg] FW: IETF BMWG Work Item Proposal forSIP 
> PerformanceBenchmarking
> 
> Romascanu, Dan (Dan) wrote:
> > I hear what you are saying but I am not sure that I can agree. The 
> > question is why should RTP plane benchmarking be within SIP 
> > Performance Benchmarking scope. What does SIP have to do with media 
> > plane performance anyway?  SIP can be used to establish 
> sessions with 
> > a different data plane than RTP, and we may want to benchmark RTP 
> > performance even if signaling is not SIP.
> 
> Dan: You are absolutely right.
> 
> > I am not saying that RTP media plane benchmarking is not 
> useful, but I 
> > believe that it should be within the scope of a different document.
> 
> I am curious: is there such an existing document?  Has there 
> been any work in avt or mmusic for RTP benchmarking?  Would 
> the bench- mark be specific to a codec?
> 
> It would be nice to gauge some consensus in the WG around 
> whether the "Media Plane" is inline with the notion of SIP 
> benchmarking or not.
> 
> Thanks,
> 
> - vijay
> --
> Vijay K. Gurbani  vkg@{lucent.com,research.bell-labs.com,acm.org}
> Bell Laboratories, Lucent Technologies, Inc.
> 2701 Lucent Lane, Rm. 9F-546, Lisle, Illinois 60532 (USA)
> 
> _______________________________________________
> bmwg mailing list
> [email-masked]
> https://www1.ietf.org/mailman/listinfo/bmwg
> 

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