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Re: [MMUSIC] Draft new version: draft-ietf-mmusic-dtls-sdp-02

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 18 December 2015 23:14 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Roman Shpount <roman@telurix.com>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Thread-Topic: [MMUSIC] Draft new version: draft-ietf-mmusic-dtls-sdp-02
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Date: Fri, 18 Dec 2015 23:14:46 +0000
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Subject: Re: [MMUSIC] Draft new version: draft-ietf-mmusic-dtls-sdp-02
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Hi,

draft-ietf-mmusic-sctp-sdp currently covers DTLS-over-SCTP, which means we have to define the associated SDP O/A procedures.

Now, if we think that nobody is going to use DTLS-over-SCTP, we can of course remove it, but that's a decision the community would have to make.

Regards,

Christer

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________________________________
From: Roman Shpount<mailto:roman@telurix.com>
Sent: ‎19/‎12/‎2015 00:28
To: Paul Kyzivat<mailto:pkyzivat@alum.mit.edu>
Cc: mmusic@ietf.org<mailto:mmusic@ietf.org>
Subject: Re: [MMUSIC] Draft new version: draft-ietf-mmusic-dtls-sdp-02


On Fri, Dec 18, 2015 at 5:24 PM, Paul Kyzivat <pkyzivat@alum.mit.edu<mailto:pkyzivat@alum.mit.edu>> wrote:
On 12/18/15 2:31 PM, Roman Shpount wrote:
Hi Martin,

Thanks again for your comments!

The whole reason for section 8.1 was DTLS over SCTP (RFC 6083).

Is there any reason for DTLS over SCTP? Is there any case where it is preferable to SCTP over DTLS?

As I have mentioned earlier, I am not sure what was the intended use case for DTLS over SCTP and if it was ever implemented, but I can see how this can be useful to provide security for multi-homed SCTP connection. I do not think DTLS over SCTP would be ever used in combination with SDP.
_____________
Roman Shpount

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