iSCSI: Boolean value (yes, no) negotiation

["Lakshmi Ramasubramanian" <nramas@windows.microsoft.com>]

Could someone please clarify Boolean key=value usage
(such as "ImmediateData=yes", etc)?

For example, the initiator sends to target "ImmediateData=no". 
But the target wants ImmediateData. So, it sends back
"ImmediateData=yes".
The initiator, being able to handle it, sends back "ImmediateData=no".
Now, they use immediate data in the PDUs. 

Is this valid? Or, in the above case if the target can't handle 
non-immediate data it has to reject the login ?

thanks!
 -lakshmi