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Re: [MMUSIC] Why do we need rtcp-mux-exclusive?

Christer Holmberg <christer.holmberg@ericsson.com> Tue, 08 March 2016 07:19 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Martin Thomson <martin.thomson@gmail.com>, Bernard Aboba <bernard.aboba@gmail.com>
Thread-Topic: [MMUSIC] Why do we need rtcp-mux-exclusive?
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Date: Tue, 08 Mar 2016 07:19:10 +0000
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Cc: Flemming Andreasen <fandreas@cisco.com>, mmusic WG <mmusic@ietf.org>
Subject: Re: [MMUSIC] Why do we need rtcp-mux-exclusive?
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Hi,

We could update 5761, by adding an ³ICE Considerations² section, where we
say that a=rtcp-mux and RTP candidates only indicates exclusive mux.
Obviously, we would have to assume that RTCP candidates won¹t be provided
later (using trickle).

Another alternative would be to go back to the original suggestion of
using a=rtcp:0 (zero port value) to indicate exclusive mux. That would
work also for non-ICE. In that case we would need to remove usage of
a=rtcp:0 for trickle ICE, as previously discussed.

Regards,

Christer



On 08/03/16 08:21, "Martin Thomson" <martin.thomson@gmail.com> wrote:

>On 8 March 2016 at 17:03, Bernard Aboba <bernard.aboba@gmail.com> wrote:
>> [BA] Since this relates to ICE, addressing it in RFC 5761bis does not
>>make
>> much sense.
>
>I didn't suggest a -bis, which implies an overhaul, just a small patch.

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