[Diffserv-interest] Re: draft-baker-diffserv-basic-classes-01.txt

Brian E Carpenter <brc@zurich.ibm.com> Fri, 31 October 2003 09:45 UTC

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Date: Fri, 31 Oct 2003 10:42:54 +0100
From: Brian E Carpenter <brc@zurich.ibm.com>
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John, I guess your comment refers to the draft so I changed the subject.

If you want to be sure the authors see your comments, you might want to
write to them directly. My reactions inserted below.


"John H. Shuler" wrote:
> Why make a distinction between "Standard Service Class" and "Low Priority
> Data"?

There is a kitchen sink aspect to this draft that worries me. Rather than
starting simple, with three or four generic service classes, the authors
have chosen to present the union of a number of diffserv deployment models.
I think that risks confusing operators by giving them too much complexity
to choose from.

> In fact, it seems the most useful outcome of this paper is to help service
> providers standardize across and between their networks as to service class
> treatment for different service types. For this reason, it seems the best
> thing to do is, rather than to create these semi-artificial classes and
> sub-classes, to get quite specific about how to mark each specific service,
> e.g. IP telephony, SNA, HTTP, FTP, unidirectional video, interactive
> multimedia, etc. You have gone part of the way to this goal, but have put
> what seems to be an artificial middle step into the process... These service
> classes. I can see why you would do this in an attempt to consolidate the
> classes for ease of management, but by the time you are done, you have so
> many classes and variations that you have defeated this purpose anyway. And
> the net goal of standardizing treatment across the network is still not
> achieved because of the multiple options for several of the services.

> Just some thoughts on a single, careful reading.
> Also, there is some dumb editorial stuff:
> (1) Do a lookup for the word "respectfully" and make sure you don't really
> mean "respectively".
> (2) Look up "sufficed" and replace with "sufficient".
> (3) You also have a tendency to use "which" instead of "that"
> (4) There is an instance of using "then" instead of "than".
> Sorry I'm too lazy to be specific about where (it's late).
> j
> --
> Jay Shuler
> President
> Beyond Category Consulting
> 4020 Halkins Drive
> San Jose, CA 95124
> (408) 582-3682
> Jay@BeyondCategory.US
> www.BeyondCategory.US
> > From: diffserv-interest-request@ietf.org
> > Reply-To: diffserv-interest@ietf.org
> > Date: Wed, 29 Oct 2003 12:00:04 -0500
> > To: diffserv-interest@ietf.org
> > Subject: Diffserv-interest digest, Vol 1 #104 - 2 msgs


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