Re: [rtcweb] Transport -03, bundling question (Re: Comments on draft-ietf-rtcweb-transports-02)

[Magnus Westerlund <[e-mail]>]

On 2014-03-31 15:40, Harald Alvestrand wrote:
> Version -03 is now published. I hope you like it!
> 
> New outstanding item:
> 
> I added requirements for implementations to be able to generate both
> fully bundled (one 5-tuple for everything) and fully unbundled (one
> 5-tuple for each flow) configurations, and for implementations to be
> able to tolerate being hit with any combination of bundling schemes.
> 
> Is there a need to specify at MUST, SHOULD or MAY levels other combinations?

RTP Usage has in Section 4.4 requirements concerning implementations
support for bundling of RTP that is:

- Required to support one RTP session per media type
- Required to support one RTP session for all media types

We don't have a requirement regarding one MST per RTP session in the RTP
usage document currently.

To this open issue I would like to highlight that we might need text
describing which combinations of RTP and data channel we expect to be
supported.

>From my individual perspective, I think being able to have data channel
on an individual transport-layer flow (5-tuple) is important to be able
to put QoS treatments on RTP packets within an RTP session separate from
the data channel. Having everything bundled, i.e one RTP session for all
media types combined with the data channel I think have strong support.
This leaves what possibilities one have to combine the data channel with
one out of several RTP sessions?

Cheers

Magnus Westerlund
(As individual)

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