Re: [AVTCORE] AD review: draft-ietf-avtcore-clksrc-09
Richard Barnes <rlb@ipv.sx> Fri, 31 January 2014 00:05 UTC
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Date: Thu, 30 Jan 2014 16:04:53 -0800
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From: Richard Barnes <rlb@ipv.sx>
To: Aidan Williams <aidan.williams@audinate.com>
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Subject: Re: [AVTCORE] AD review: draft-ietf-avtcore-clksrc-09
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Hey Aidan, Would you like to go ahead and revise the document before it goes to the IESG for evaluation? Or we can handle these with any IESG comments. --Richard On Tue, Jan 28, 2014 at 4:19 PM, Aidan Williams <aidan.williams@audinate.com > wrote: > Hi Richard, > > Thanks for the review. Responses are inline below... > > > ------------------------------ > > *From: *"Richard Barnes" <rlb@ipv.sx> > *To: *"avt@ietf.org WG" <avt@ietf.org> > *Sent: *Sunday, 29 December, 2013 12:25:39 PM > *Subject: *[AVTCORE] AD review: draft-ietf-avtcore-clksrc-09 > > > I have reviewed this document in preparation for IETF LC. Overall, it > reads quite well. Thanks! I have requested a LC. > > A couple of comments that you can consider with LC comments: > > -- It seems like a reader familiar with > draft-ietf-avtext-rtp-grouping-taxonomy might be surprised by these terms. > Given that that document is still in development, I don't expect you to be > able to use the terms there. However, it might be helpful to add a note > saying that you are not attempting to align with their terminology. > > It is great that there is a document attempting to define terminology > clearly (it would have been awesome to have it for this draft!), but I'm > not sure how to go about addressing your comment since we probably don't > want to refer to the above draft explicitly. At present, there is a > positive statement: "here are the definitions". Can you say a bit more > about what you would like to see? > > -- GLONASS? > > Happy to add this. > > -- Behavior with traceable clocks seems underspecified to me. Section 4.7 > should say explicitly that traceable clocks are marked with the > ":traceable" suffix or the "/traceable/" identifier. With regard to > NTP/PTP servers, how does the user of the clock know that the server is > traceable? Is this indicated in-band to those protocols? Would it not be > useful to be able to indicate that those servers provide traceable time? > > Marking a clock as traceable allows additional information (e.g. IP > addresses, PTP master identifiers and the like) to be omitted from the SDP > since any traceable clock available at the answerer is considered to be an > appropriate timestamp reference clock. For example, an offerer could could > specify ts-refclk:ntp=/traceable/ and the answerer could use GPS as a > reference clock since GPS is a source of traceable time. > > Would some additional sentences such as these address your comment? > > regards > aidan > ____ > :wq! > > --Richard > > _______________________________________________ > Audio/Video Transport Core Maintenance > avt@ietf.org > https://www.ietf.org/mailman/listinfo/avt > > >
- [AVTCORE] AD review: draft-ietf-avtcore-clksrc-09 Richard Barnes
- Re: [AVTCORE] AD review: draft-ietf-avtcore-clksr… Aidan Williams
- Re: [AVTCORE] AD review: draft-ietf-avtcore-clksr… Richard Barnes
- Re: [AVTCORE] AD review: draft-ietf-avtcore-clksr… Aidan Williams