Re: [tsvwg] RFC 4594 bis

["Bless, Roland (TM)" <[e-mail]>]

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Hi Fred,

Am 11.08.2015 um 06:16 schrieb Fred Baker (fred):
>> On Aug 10, 2015, at 5:51 PM, Black, David <[e-mail]> 
>> wrote:
>> 
>> the extent that Scavenger/Lower Effort was "standardized" to use 
>> CS1, RFC 4594 is where that occurred.
> 
> Actually, no. Internet2 used it in their scavenger service (QBSS), 
> which was the prototype for RFC 3662. Not sure why the QBSS

It's not quite true that it was the prototype for RFC 3662:
Scavenger/QBSS was defined two years after our initial
I-D https://tools.ietf.org/html/draft-bless-diffserv-lbe-phb-00
which then was merged into RFC 3662.

The CS1 proposal came also in via:
https://tools.ietf.org/html/draft-ietf-diffserv-pdb-bh-00
I raised my concerns at the time here:
https://www.ietf.org/mail-archive/web/diffserv/current/msg02013.html
but CS1 nevertheless made it as one DSCP that is mentioned in RFC 3662.

> definition is on a Frech site, but that's where Google took me. 
> http://mgoutell.free.fr/gridftp/QBSS/qbss-definition.txt says that

I guess that the original document died together with
http://qbone.internet2.edu/qbss
It's a pity that some documents vanish forever this way...

> "Within QBone, traffic marked with DSCP 001000 (binary) shall be 
> considered in the QBSS class and should be given the service 
> described in this document."

Ok, interesting...

> That's where the number came from. I tried Really Hard to not
> invent numbers.

Yep, however, RFC 3662 did not really recommended a single DSCP,
while RFC 4594 required to choose one.

Regards,
 Roland
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