RE: iSCSI: definition of TSID (2.11.4 of draft 07)

["KRUEGER,MARJORIE (HP-Roseville,ex1)" <marjorie_krueger@hp.com>]

I'm curious why you've phrased it this way.  I think of it more like;

"The TSID is the target assigned tag for a session with a specific initiator
name that, together with the ISID uniquely identifies a session with that
initiator.

However, the target MUST enforce uniqueness of the SSID for a given I_T
combination (in order for login and recovery rules to make sense).

The TSID MAY be a unique tag for a session with a specific initiator name."

I know the last "rule" is more for convenience than to follow the "modeling
rules" (but that's the most straight forward way to implement TSID
assignment?).  From the target viewpoint, it must first set the context of
the initiator name, secondly the ISID.  

Marjorie Krueger
Networked Storage Architecture
Networked Storage Solutions Org.
Hewlett-Packard
tel: +1 916 785 2656
fax: +1 916 785 0391
email: marjorie_krueger@hp.com 

> -----Original Message-----
> From: Jim Hafner [mailto:hafner@almaden.ibm.com]
> Sent: Tuesday, August 28, 2001 12:59 PM
> To: ips@ece.cmu.edu
> Subject: iSCSI: definition of TSID (2.11.4 of draft 07)
> 
> 
> Folks,
> 
> The following text defines TSID in referenced document (and with the
> changes proposed by Mallikarjun):
> 
> "The TSID is a tag that identifies the SCSI initiator port.  
> TSID is set by
> the target.  It MUST be valid only in the final response."
> 
> I'm trying to figure out what the TSID has to do with the 
> SCSI initiator
> port.  As I understand it, they are completely unrelated (at an
> architecture level).  In implementation may choose to use the 
> TSID as a
> pointer to the session in a unique way across all sessions in 
> the target or
> in a unique way across all sessions with a given named iSCSI 
> initiator or
> it can do any number of other things.  It is, in my opinion, 
> unrelated to
> the SCSI initiator port.
> 
> I would propose the following alternative text:
> 
> "The TSID is a tag set by the target that, together with the ISID,
> identifies a unique session with the initiator."
> 
> Comments?
> 
> Jim Hafner
>