Re: [MMUSIC] RID update (draft-pthatcher-mmusic-rid-01,> )

Paul Kyzivat <pkyzivat@alum.mit.edu> Fri, 16 October 2015 16:56 UTC

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To: Adam Roach <adam@nostrum.com>, mmusic@ietf.org
References: <56202075.3000202@nostrum.com> <5620692D.5030703@alum.mit.edu> <562128D5.1040503@nostrum.com>
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
Message-ID: <56212C4B.6080308@alum.mit.edu>
Date: Fri, 16 Oct 2015 12:56:43 -0400
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Subject: Re: [MMUSIC] RID update (draft-pthatcher-mmusic-rid-01,> )
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Thanks. These changes resolve my concerns.
One comment inline.

On 10/16/15 12:41 PM, Adam Roach wrote:
> On 10/15/15 22:04, Paul Kyzivat wrote:
>> * Section 7.1:
>>
>> In:
>>
>>  1. It MUST generate a 'rid-identifier' that is unique within a media
>>     description
>>
>> IIUC, the rid-identifier must be unique within an RTP session,
>> including all the media descriptions pertaining to that RTP session.
>
> Added:
>
>      Note that 'rid's are only required to be unique within a media
>      section ("m-line"); they do not necessarily need to be unique within
>      an entire RTP session.  In traditional usage, each media section is
>      sent on its own unique 5-tuple, which provides an unambiguous scope.
>      Similarly, when using BUNDLE
>      [I-D.ietf-mmusic-sdp-bundle-negotiation], MID values associate RTP
>      streams uniquely to a single media description.

This means with bundling both will need to be monitored in the RTP/RTCP 
by the receiver to properly process the incoming packets.

Obviously this wasn't clear to me before, so the statement helps.

	Thanks,
	Paul