[MIPSHOP-MIH-DT] Still [Transport] issues

Hi,

I am still wondering, if the transport we have chosen are the right
ones. I understand that ES and CS are rather small messages, and having
UDP carrying them would be good enough. The problem is, that these two
types of messages fall under a "push" model, where the network would
unsolicitedly send these messages over udp. If there are to be
middlebozes in between, those will cause problems. Current NATs do not
have a well specified timeout period but it seems that 30 sec is quite
ofter used.

IS on the other had is more like a pull model, so no major problems for
the middleboxes. If MIH would have applic layer fragmentation, then I'd
say udp would certainly fit better here than tcp.

We could say that any choice is as good (or as bad) as the other one, it
mainly depends on the deployment scenario which we still do no know. I
was just trying to point out that avoiding udp fragmentation must not be
the only consideration to be taken into account.

Hopefully we can spend a few minutes on these issues on the conf call.

- gabor

-----Original Message-----
From: ext Telemaco Melia [mailto:telemaco.melia@netlab.nec.de] 
Sent: Thursday, August 30, 2007 8:46 AM
To: mipshop-mih-dt@ietf.org
Subject: [MIPSHOP-MIH-DT] Current status

Dear all,

I have been reading the input Gabor provided with the IDs
draft-bajko-mos-dhcp-options-00 and draft-bajko-mos-dns-discovery-00.
Thanks Gabor for the work. Here my comments:

o draft-bajko-mos-dhcp-options-00
-1 terminology section should be aligned with the PS doc
-2 introduction section: I do not think it is required, I would prefer
to refer to the solution doc and move the text there if you want.
-3 discussion on co-located MoS: move it to the solution document when
we talk about the transport

o draft-bajko-mos-dns-discovery-00
- same as before for 1 and 2
- refer to the solution document when you discuss on the selection of
the transport

During the nect AC we should then discuss the open points noted in the
draft.
I also would like to receive from Nada an update of the current status
and see what text we can included in the first version of the document.

As for the time of the AC I would propose to have it at 14:00 CET on
Tuesday September 4th.
Would  be fine with everybody?

Please le me know

Telemac

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