Re: is TargetName always mandatory or not?

["Andre Asselin" <asselin@us.ibm.com>]

John & Julian,
     How about this for the section 5 text:

The initial Login request of the first connection of a session (leading
login) MUST include the InitiatorName key=value pair. The initial login
request
of the leading Login MAY also include the SessionType key=value pair, in
which case if the SessionType is not "discovery", then the initial login
request
MUST also include the key=value pair TargetName.

John,
     I disagree with your second statement: I don't see any way you could
have 2 different sessions established within the same portal group with the
same InitiatorName, ISID, and TSID.  The spec. says that a nexus, and
therefore an iSCSI session, is uniquely identified by the InitiatorName,
ISID, TSID, and portal group tag.  There is no mention of TargetName
contributing to the identificaiton of a session.  In my opinion, a
non-leading connection should NOT have the TargetName, since it doesn't
contribute anything.

Andre Asselin
IBM ServeRAID Software Development
Research Triangle Park, NC



                                                                                                                                      
                    John                                                                                                              
                    Hufferd/San          To:     Julian Satran/Haifa/IBM@IBMIL                                                        
                    Jose/IBM@IBMUS       cc:     ips@ece.cmu.edu                                                                      
                    Sent by:             Subject:     Re: is TargetName always mandatory or not?                                      
                    owner-ips@ece.                                                                                                    
                    cmu.edu                                                                                                           
                                                                                                                                      
                                                                                                                                      
                    10/31/2001                                                                                                        
                    04:20 AM                                                                                                          
                                                                                                                                      
                                                                                                                                      




Julian,
I think the TargetName should be included on the Initial Login Request on
the Leading Login.  It seem strange to permit the Authentication functions
to proceed if perhaps the intended Target is different then the one doing
the Authentication.  The way it currently is written, you could pass all
the Security test and then find out just before going into Full Function
Phase, that it was intended for some other Target.  Seems like a waste.

My I think that TargetName should also be on all connections on the Initial
Login Request.  Here is my thinking:

The SSID (ISID+TSID) is unique only with regards to a Specific Initiator
and Target Node Pair.  It is therefore not clear that just knowing the SSID
and InitiatorName is enough to understand what session the subsequent
connections are being attached to.  And it is possible that the CID could
be also overlapped with another session.

Therefore, I think it make since to determine all this on the initial Login
on every Connection, so you know at the beginning what values can be
negotiated, or that are being set to the right Session.

.
.
.
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
Home Office (408) 997-6136
Internet address: hufferd@us.ibm.com


Julian Satran/Haifa/IBM@IBMIL@ece.cmu.edu on 10/30/2001 11:33:50 PM

Sent by:  owner-ips@ece.cmu.edu


To:   ips@ece.cmu.edu
cc:
Subject:  Re: is TargetName always mandatory or not?



It is the leading login:

The section 5 paragraph will read:

The initial Login request of the first connection of a session (leading
login) MUST include the InitiatorName key=value pair. The leading Login
request MAY also include the SessionType key=value pair in which case if
the SessionType is not "discovery" then the leading Login Request MUST
also include the key=value pair TargetName.

Julo




Andre Asselin/Raleigh/IBM@IBMUS
Sent by: owner-ips@ece.cmu.edu
31-10-01 02:08
Please respond to Andre Asselin


        To:     "IPS Reflector (E-mail)" <ips@ece.cmu.edu>
        cc:
        Subject:        is TargetName always mandatory or not?



     In section 5 of the spec, it says "If the SessionType is not
"discovery" then the initial Login Request MUST also include the key=value
pair TargetName.".  However, in Appendix D, the description for TargetName
says it is Leading Only.
     Should TargetName not be Leading Only, or should the text in section
5
say that TargetName must be in the initial Login Request of a leading
connection?

Andre Asselin
IBM ServeRAID Software Development
Research Triangle Park, NC