Re: Review of GIST over SCTP and DTLS - updated

Xiaoming Fu <[email protected]> Thu, 25 Mar 2010 17:24:09 -0700
Newsgroups gmane.ietf.nsis
Message-ID <[email protected]>
Hi Jukka,

Thanks a lot for your comments.

We will address issues your raised and submit a new version asap, with a 
clarification to your last part comments:
 > - 9. IANA section: name the MA protocol 4 differently, we could also
 > have DCCP and DTLS. Thus, MA protocol 4 is DTLS over SCTP."
nsis/current/msg08493.html
http://www.ietf.org/mail-archive/web
Earlier the WG has commented on this, and seems to have agreed on 
identifying DTLS as a separate MA (thus the ID changed its name as 
well), which can be used for SCTP and other transport mechanisms in the 
future:

http://www.ietf.org/mail-archive/web//nsis/current/msg08483.html

I think this way might make more sense, as it allows a stacked MAs 
(alike TLS vs TCP).
What do you think?
Xiaoming
On 3/25/2010 5:00 PM, Jukka Manner wrote:
> Hi Xiaoming,
>
> I have reviewed the draft and would like to see the following things
> fixed before we can conclude that the draft is ready to go forward:
>
> - Introduction:
> * what are these "other issues" of TCP? Please clarify.
> * "...especially if deployment over the public Internet is
> contemplated": I don't quite get this statement. SCTP, as DCCP, does not
> natively get through firewalls (nor NATs), so SCTP is not directly
> applicable to the Internet at large, on the contrary.
>
> - S3.4: s/"was able to remain"/"was able to retain"/
>
> - 5.1: In practice the multihoming support of SCTP is not that
> beneficial. Since NSIS is about signaling on the data path, and if that
> data path fails, it doesn't really the application if the state can
> still be refreshed using an alternative path. The only benefit of
> multihoming might be that the state on the failed path can be more
> quickly torn down using the multihoming capability of SCTP. So, please
> be more clear on this, the current text goes back and forth on the topic.
>
> - 9. IANA section: name the MA protocol 4 differently, we could also
> have DCCP and DTLS. Thus, MA protocol 4 is DTLS over SCTP.
>
> Regards,
> Jukka