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    RE: Preliminary San Diego Agenda

    Doug,

> As there is a 40 minute time-slot for discussion of framing, this would
then
> imply there is a TCP protocol that can use framing. 

That would be an incorrect assumption.  The following text (previously
posted to the list) describes the purpose of this session:

  The Transport Area Directors have asked to have the ips WG
  agenda in San Diego include an overview and discussion of
  both the framing problem(s) and possible solutions.  Aside
  from noting that the iSCSI Urgent mechanism is a proposed
  solution to one form of the framing problem, I'd prefer
  to leave complete definition and explanation of the various
  forms of the framing problem to this session.

  The primary goal of this session in San Diego is to make sure
  that the framing requirements/needs/desires of the ips WG's
  protocols are well understood.

SCTP is among the topics that are germane for discussion as
part of this item.

As to the API issue, all of the identification,
steering, etc. required to accomplish "framing",
including steering the data into the right place
in memory can be accomplished by packet filters,
or generalizations thereof, which (logically)
sit below IP in the protocol stack.  Such
filters can look at data all the way up to
layer 7 (e.g., a packet filter that switched
based on the <HEAD> portion of HTML would be
well within reason).  Packet filters are
generally transparent to the operation (and
interoperation) of protocols "on the wire".
The APIs for such packet filters are outside
the scope of the ips WG's charter, so I must
ask you to take discussion of them elsewhere.  

Thanks,
--David
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David L. Black, Senior Technologist
EMC Corporation, 42 South St., Hopkinton, MA  01748
+1 (508) 435-1000 x75140     FAX: +1 (508) 497-8500
black_david@emc.com       Mobile: +1 (978) 394-7754
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Last updated: Tue Sep 04 01:06:12 2001
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