RE: iSCSI 07-95 Comment 1

[Robert Snively <rsnively@Brocade.COM>]

IEEE and ANSI have discovered that such misunderstandings
and misinterpretations are so common that their convention
is to explicitly define the
behavior when a bit is "1" and when a bit is "0".  The classics
are bits with a double negative, like "disable checking".
I would recommend we consider following the same
conventions, even if they are not explicitly required by
IETF conventions.

Bob

> -----Original Message-----
> From: Black_David@emc.com [mailto:Black_David@emc.com]
> Sent: Wednesday, September 26, 2001 3:54 PM
> To: tdineen@redswitch.com
> Cc: ips@ece.cmu.edu
> Subject: RE: iSCSI 07-95 Comment 1
> 
> 
> Like all other bits, the X bit is active when set to '1'.  --David
> 
> > -----Original Message-----
> > From: Thomas Dineen [mailto:tdineen@redswitch.com]
> > Sent: Wednesday, September 26, 2001 5:35 PM
> > To: Sanjeev Bhagat (TRIPACE/Zoetermeer)
> > Cc: ips@ece.cmu.edu; Thomas Dineen
> > Subject: Re: iSCSI 07-95 Comment 1
> > 
> > 
> > Sanjeev:
> > 
> >   I disagree!
> > 
> >   Maybe I should have provided a few more words in my 
> > original comment.
> > 
> >   For example the X Bit: Dose a one state mean Retry? Dose 
> a zero mean
> > Restart?
> > 
> >   We need to specify what happens when the bit is one and what if
> > anything happens
> > when the bit is zero.
> > 
> >    These details are specified for other variables in the draft.
> > 
> > Thomas Dineen
> > 
> > 
> > "Sanjeev Bhagat (TRIPACE/Zoetermeer)" wrote:
> > > 
> > > Gentleman :),
> > > 
> > > The PDU described is a data structure and not a hardware 
> > signal on a bus. So
> > > it is not necessary to define it as active or negative.
> > > 
> > > Am I wrong??
> > > 
> > > Sanjeev
> > > 
> > > -----Original Message-----
> > > From: Thomas Dineen [mailto:tdineen@redswitch.com]
> > > Sent: Wednesday, September 26, 2001 3:15 AM
> > > To: ips@ece.cmu.edu; Thomas Dineen
> > > Subject: iSCSI 07-95 Comment 1
> > > 
> > > GentlePeople:
> > > 
> > > "3.2.1.1 X
> > > The X bit is used as a Retry/Restart indicator for request 
> > PDUs (PDUs
> > > from initiator to target). This bit is always 1 for response PDUs
> > > (PDUs from target to initiator)."
> > > 
> > > "3.2.1.2 I
> > > The I bit is used as immediate delivery marker for request 
> > PDUs (PDUs
> > > from initiator to target). This bit is always 1 for response PDUs
> > > (PDUs from target to initiator)."
> > > 
> > > - Reading the above paragraphs I do not get a sence of whether the
> > > X and I bits are active for a one or zero state. Please 
> specify the
> > > logical function of both the X and I bits for both the 
> one and zero
> > > states.
> > > 
> > > Thomas Dineen
> > 
>