Re: [xrblock] I-D Action: draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-01.txt

Varun Singh <vsingh.ietf@gmail.com> Sun, 17 May 2015 11:01 UTC

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From: Varun Singh <vsingh.ietf@gmail.com>
Date: Sun, 17 May 2015 14:01:29 +0300
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To: Shida Schubert <shida@ntt-at.com>
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Subject: Re: [xrblock] I-D Action: draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-01.txt
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Hi Shida, Dan,

Following up on the email, what is the suggested next step? Should I
go ahead and report an errata?

On Sat, Mar 28, 2015 at 7:53 PM, Shida Schubert <shida@ntt-at.com> wrote:
> Hi;
>
>  So looking at
>
>  http://www.ietf.org/iesg/statement/errata-processing.html
>
>  My feeling is that we can probably do this as an errata.
>
>  I do think some of the people contributing to this WG who have experience
> chairing long running WG where errata/bis are common can probably give
> better guidance though.
>
>  Thanks
>
>  Shida as co-chair
>
> On Mar 26, 2015, at 9:05 AM, Huangyihong (Rachel) <rachel.huang@huawei.com>
> wrote:
> Dear all,
>
> I prefer 6.7 too. As for the issue raised by Varun, will it be a technical
> errata to RFC7003 or a new draft to define the missing metric?
>
> BR,
> Rachel
>
> -----邮件原件-----
> 发件人: xrblock [mailto:xrblock-bounces@ietf.org] 代表 Varun Singh
> 发送时间: 2015年3月26日 23:45
> 收件人: Roni Even
> 抄送: xrblock@ietf.org
> 主题: Re: [xrblock] I-D Action:
> draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-01.txt
>
> Thank you Roni for the review and  feedback.
>
> I too prefer 6.7, however, 6.8 has gapDiscardRate and gapLossRate in
> addition to burstDiscardRate and burstLossRate, which cannot be derived by
> the raw information in 6.7.
> Would we be unhappy if the gapRates were removed or missing?
>
> The other minor issue/bug within 6.7, that there is no definition for
> burstDiscardCount in any XR draft. This would require a new draft and can be
> proceeded in parallel.
>
>
> -Varun
>
> On Thu, Mar 26, 2015 at 9:14 AM, Roni Even <ron.even.tlv@gmail.com> wrote:
>
> Hi Varun,
>
> I think that we can keep 6.7 and remove 6.8. Having the actual numbers
> allows for calculating rate and other statistics, so I find it more
> useful
>
> Roni Even
>
>
>
> From: xrblock [mailto:xrblock-bounces@ietf.org] On Behalf Of Varun
> Singh
> Sent: 28 February, 2015 10:48 PM
> To: xrblock@ietf.org
> Subject: Re: [xrblock] I-D Action:
> draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-01.txt
>
>
>
> Hi all,
>
> The -01 draft incorporates the changes discussed at IETF 91.
> - new registry defined for WebRTC Statistics API
> - added the SR and RR metrics, which were earlier in
> draft-alvestrand-rtcweb-stats-registry
> - changed the TitleCased identifiers to camelCase, to keep consistency
> with the W3C document.
>
> OPEN ISSUE (burst metrics):
> The document currently defines two sets of burst metrics
> - Section 6.7: Reports cumulative packets in a burst and the
> corresponding burst counts.
> - Section 6.8.: Reports the average fraction of packets lost in a burst/gap.
>
> From section 6.7, we can infer the average burst of packet
> loss/discards by dividing the total_packets_lost_in_burst/burst_count.
>
> From section 6.8, we can infer the impact of the burst packet loss,
> i.e.,
>
> total_burst_loss/totel_expected_packets/burst_count
>
> Do we keep both? or pick one?
>
> Thoughts and comments on the open issue and the document in general
> are appreciated.
>
> Regards,
> Varun (on behalf of the authors)
>
>
>
>
> On Sat, Feb 28, 2015 at 7:22 PM, <internet-drafts@ietf.org> wrote:
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the Metric Blocks for use with RTCP's
> Extended Report Framework Working Group of the IETF.
>
> Title : Considerations for Selecting RTCP Extended Report (XR)
> Metrics for the WebRTC Statistics API Authors : Varun Singh Rachel
> Huang Roni Even Dan Romascanu Lingli Deng Filename :
> draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-01.txt
> Pages : 17
> Date : 2015-02-28
>
> Abstract:
> This document describes monitoring features related to media streams
> in Web real-time communication (WebRTC). It provides a list of RTCP
> Sender Report, Receiver Report and Extended Report metrics, which may
> need to be supported by RTP implementations in some diverse
> environments. It also defines a new IANA registry, a list of
> identifiers for the WebRTC's statistics API. These identifiers are a
> set of RTCP SR, RR, and XR metrics related to the transport of
> multimedia flows.
>
>
> The IETF datatracker status page for this draft is:
>
> https://datatracker.ietf.org/doc/draft-ietf-xrblock-rtcweb-rtcp-xr-me
> trics/
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-xrblock-rtcweb-rtcp-xr-metrics-
> 01
>
> A diff from the previous version is available at:
>
> http://www.ietf.org/rfcdiff?url2=draft-ietf-xrblock-rtcweb-rtcp-xr-me
> trics-01
>
>
> Please note that it may take a couple of minutes from the time of
> submission until the htmlized version and diff are available at
> tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
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