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Re: [MMUSIC] Updated ICE-tcp



Hi Jonathan,
 
I think the draft looks good.
 
One question, though: in chapter 3, what is the reason for mandating "actpass"? Why won't "passive" work?
 
Regards,
 
Christer

________________________________

From: mmusic-bounces at ietf.org on behalf of Jonathan Rosenberg
Sent: Mon 25/02/2008 18:33
To: IETF MMUSIC WG
Subject: [MMUSIC] Updated ICE-tcp



I've submitted an updated ICE-tcp:
http://www.ietf.org/internet-drafts/draft-ietf-mmusic-ice-tcp-06.txt

There are two changes:

* added usage of comedia instead of defining an ice-lite for tcp; allow
for an offer or answer to have ICE for UDP and just comedia for TCP, in
which case ICE proceeds. Defined some rules around selection of
direction attributes needed for interop. This turned out to be
relatively easy to incorporate compared to the other approaches we
discussed last meeting.

* generalized the discussion on secure media a bit so it wasn't specific
to DTLS-SRTP.


The other big issue that came up at the last IETF was around the success
rates of ICE-tcp being too low, and that we might need to look at port
prediction or some of the other techniques defined in Saikat's papers to
make this better. I have spent some time researching this, and will post
other notes with the open issues here. This is a complex topic, and
there is some real experimentation work needed before we can conclude on
this.

-Jonathan R.
--
Jonathan D. Rosenberg, Ph.D.                   499 Thornall St.
Cisco Fellow                                   Edison, NJ 08837
Cisco, Voice Technology Group
jdrosen at cisco.com
http://www.jdrosen.net <http://www.jdrosen.net/>                          PHONE: (408) 902-3084
http://www.cisco.com <http://www.cisco.com/> 
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