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Re: [NSIS] QSPEC Questions

"Hannes Tschofenig" <Hannes.Tschofenig@gmx.net> Thu, 06 November 2008 20:15 UTC

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From: Hannes Tschofenig <Hannes.Tschofenig@gmx.net>
To: 'Al Morton' <acmorton@att.com>, 'Xiaoming Fu' <fu@cs.uni-goettingen.de>
References: <00ff01c93c55$b62dee80$04ffa8c0@nsnintra.net> <490D0132.1000709@cs.uni-goettingen.de> <200811061743.mA6HhqE0030117@klph001.kcdc.att.com>
Date: Thu, 06 Nov 2008 22:14:45 +0200
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Cc: nsis@ietf.org
Subject: Re: [NSIS] QSPEC Questions
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Al, 

shouldn't we provide that type of context in the document as well? 
They document does not appear self contained enough so that a regular reader
can understand it easily. 

Ciao
Hannes
 

>-----Original Message-----
>From: Al Morton [mailto:acmorton@att.com] 
>Sent: 06 November, 2008 19:44
>To: Xiaoming Fu; Hannes Tschofenig
>Cc: nsis@ietf.org
>Subject: Re: [NSIS] QSPEC Questions
>
>At 09:24 PM 11/1/2008, Xiaoming Fu wrote:
>>Hannes Tschofenig wrote:
>>...
>>>* Where does the description for <Path Jitter>, <Path PLR> and <Path 
>>>PER> come from? There is no reference to another RFC given 
>in these sections.
>>
>>QSPEC ID suggested packet jitter is based on [rfc3393], but I am not 
>>sure whether (nominal) jitter values are directly addable 
>across multiple hops.
>
>It's possible to accumulate Jitter values, if they're measured 
>and specified in the appropriate form.
>The more detailed references include Rec Y.1541,
>http://tools.ietf.org/html/draft-ietf-ippm-spatial-composition-07
>http://tools.ietf.org/html/draft-ietf-ippm-delay-var-as-01
>>Also, is PLR or PER directly addable (or just a multiplication)?
>
>see the first two refs above.
>Al
>

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