Re: iSCSI : Query about parameter exchange

["Julian Satran" <Julian_Satran@il.ibm.com>]

Priya,

The correct target answer would be:



T à I    T=1, csg=0, nsg=1





indicating it wants  to move to stage 1.





After that the Initiator will answer:





I->T  T=x whatever ...


T->I  T=x Max....


This phase can end in a single handshake or have several.





Julo





                                                                                                                                                 
                      "Priya                                                                                                                     
                      Viswambharan"            To:       <ips@ece.cmu.edu>                                                                       
                      <priyav@marantine        cc:                                                                                               
                      tworks.com>              Subject:  iSCSI : Query about parameter exchange                                                  
                      Sent by:                                                                                                                   
                      owner-ips@ece.cmu                                                                                                          
                      .edu                                                                                                                       
                                                                                                                                                 
                                                                                                                                                 
                      04/10/02 20:18                                                                                                             
                                                                                                                                                 



Hi all,





I have a query about parameter negotiation/declaration.





Consider the following scenario.


I à T    T=1, csg=0, nsg=3





If the target has to send say its MaxRecvDataSegmentLength (or any other
key which is not valid in the Security phase) to the initiator, is it ok
for the target to respond with


T à I    T=0, csg=1


            MaxRecvDataSegmentLength=<value>


so that it can notify the Initiator of its capacity.





I believe there are some implementations that behave this way. In a Normal
session, if such a login PDU is received from the Initiator the target can
send its MaxRecvDataSegmentLength through a Text response in Full feature
phase. But how could a target notify the Initiator of its
MaxRecvDataSegmentLength in the following 2 scenarios : 1) a Discovery
session 2) a Normal Session and the Initiator has not sent a text request
to the target.





Thanks


Priya