RE: Question regarding SNACK and bidi transfers

["Amir Shalit" <amir@astutenetworks.com>]

Eddy,

How do you "couple" R2TSN and DataSN together? Would it be better
using an option bit indicating what we are asking for?

Amir

-----Original Message-----
From: owner-ips@ece.cmu.edu [mailto:owner-ips@ece.cmu.edu]On Behalf Of
Eddy Quicksall
Sent: Wednesday, June 19, 2002 3:12 AM
To: julian_satran@il.ibm.com
Cc: ips@ece.cmu.edu; Bill Studenmund
Subject: RE: Question regarding SNACK and bidi transfers


Julo,

Since the answer to the 2nd question is "yes" (see your EMAIL with subject
"Emailing: msg10874.txt"), then I think the spec should make that more clear
in sections 9.8.1 and 9.7.

Perhaps in section 9.8.1, it should say something like "Except, when used
with a bidirectional command and SNACK is being supported, the R2TSN must
start with a number that couples the R2TSN and DataSN together as one
continuous sequence". And a similar statement added to 9.7.

Eddy

-----Original Message-----
From: Bill Studenmund [mailto:wrstuden@wasabisystems.com]
Sent: Tuesday, June 18, 2002 7:56 PM
To: ips@ece.cmu.edu
Subject: Question regarding SNACK and bidi transfers


I have a question about SNACK type 0 requests. In the text, they are
described as being for Data-In PDUs or R2T PDUs.

For a bidi command, how do you know which? Does this mean that for a bidi
command, data-in and R2TSNs have to be mutually-unique (i.e. drawn from
the same pool)?

Take care,

Bill