Re: [xrblock] WGLC fordraft-ietf-xrblock-rtcp-xr-burst-gap-discard-04.txt

Qin Wu <bill.wu@huawei.com> Tue, 24 July 2012 09:13 UTC

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From: Qin Wu <bill.wu@huawei.com>
To: Colin Perkins <csp@csperkins.org>
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Subject: Re: [xrblock] WGLC fordraft-ietf-xrblock-rtcp-xr-burst-gap-discard-04.txt
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----- Original Message ----- 
From: "Colin Perkins" <csp@csperkins.org>
To: "Qin Wu" <bill.wu@huawei.com>
Cc: "Romascanu, Dan (Dan)" <dromasca@avaya.com>; "xrblock" <xrblock@ietf.org>
Sent: Tuesday, July 24, 2012 4:59 PM
Subject: Re: [xrblock] WGLC fordraft-ietf-xrblock-rtcp-xr-burst-gap-discard-04.txt


On 24 Jul 2012, at 03:17, Qin Wu wrote:
> ----- Original Message ----- 
> From: "Colin Perkins" <csp@csperkins.org>
> To: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
> Cc: "xrblock" <xrblock@ietf.org>
> Sent: Monday, July 23, 2012 6:25 PM
> Subject: Re: [xrblock] WGLC fordraft-ietf-xrblock-rtcp-xr-burst-gap-discard-04.txt
> 
> 
>> Dan,
>> 
>> On 11 Jul 2012, at 15:48, Romascanu, Dan (Dan) wrote:
>>> This message initiates a Working Group Last Call for the Internet-Draft
>>> ' RTCP XR Report Block for Burst/Gap Discard metric Reporting '. Please
>>> read and send your comments, questions and concerns to the WG mail list
>>> before 7/25 COB. 
>>> 
>>> If you read the document and you believe it's just fine and ready for
>>> submission to the IESG please send a message stating this. 
>>> 
>>> The document is available at
>>> http://www.ietf.org/id/draft-ietf-xrblock-rtcp-xr-burst-gap-discard-04.txt. 
>> 
>> 
>> I've read this draft, and have no objection to it progressing. However, it might be useful to provide some clarification on how to calculate a sampled the burst/gap discard metric, since it's not obvious to me how this is derived.
> 
> [Qin]: I think burst gap discard draft does not support reporting sample metric since burst/gap discard metric is not measured at a time instant but over one or several reporting intervals. I can add the following statement to clarify this:
> "
>      In this document, Burst/Gap Discard Metric is not measured at a particular
>      time instant but over one or several reporting intervals.
>      Therefore Burst/Gap Discard Metric MUST not be chosen as Sampled
>      Metric.
> " 

Assuming you mean "MUST NOT" rather than "MUST not", fine. 

[Qin]: You are right.


-- 
Colin Perkins
http://csperkins.org/