RE: iSCSI: Byte1 Bit 7 Seems Not to be reserved

["Eddy Quicksall" <Eddy_Quicksall@ivivity.com>]

If it is reserved then that means "today I don't know the meaning" but if
that is the case, why not make it 0? If it is a "1" for a reason, then it
would not fit the meaning of "reserved" (would it?).

Draft 7 said bit 7 is a 1 and bits 5-6 were reserved. Wouldn't that be less
controversial than saying a "1" is a reserved bit?

Maybe I am missing something.

Eddy

-----Original Message-----
From: Julian Satran [mailto:Julian_Satran@il.ibm.com]
Sent: Friday, December 14, 2001 12:04 PM
To: ips@ece.cmu.edu
Subject: Re: iSCSI: Byte1 Bit 7 Seems Not to be reserved


John,

If you are referring to the fact that a reserved bit has to be 0 - that
is not so.
The statement about reserved is that they are 0 unless explicitly said
otherwise.
There are some other reserved positions that are set to 1.

Julo



        John Hufferd@IBMUS


14-12-01 10:24

        To:        Julian Satran/Haifa/IBM@IBMIL@IBMDE
        cc:        ips@ece.cmu.edu
        Subject:        iSCSI: Byte1 Bit 7 Seems Not to be reserved



Julian,
in Draft 9, the SCSI Response PDU picture shows Byte 1 Bit 7 (normally
the Final Flag) to be set to 1.  Yet the Text that follows the picture
says that Byte 1 Bit 7 -5 is reserved.  We should probably make those
consistent.   I think you meant to indicate that the Response was the
only PDU associated with this action, so I think you need to mark only
Byte 1 bit 6-5 as reserved.

.
.
.
John L. Hufferd
Senior Technical Staff Member (STSM)
IBM/SSG San Jose Ca
Main Office (408) 256-0403, Tie: 276-0403,  eFax: (408) 904-4688
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Internet address: hufferd@us.ibm.com