RE: iscsi : target originated login negotiations.

["Eddy Quicksall" <EQuicksall@mediaone.net>]

This is the way I see it ... since the spec has been changed to say:

 For numerical (and binary) negotiations, the responding party MUST
 respond with the required key.

So, the initiator MUST respond. Therefore, after the target starts a
negotiation, the default no longer has a meaning.

I would also like to hear the answer to (a) and (b) below.

Eddy

-----Original Message-----
From: Santosh Rao [mailto:santoshr@cup.hp.com]
Sent: Thursday, September 27, 2001 8:30 PM
To: IPS Reflector
Subject: iscsi : target originated login negotiations.


All,

I have a question on how the target originated negotiation works. The
draft describes this as :

"The target may offer key=value pairs of its own. Target requests are
not limited to matching key=value pairs as offered by the initiator.
However, the initiator always controls the request-response initiation
and termination."

Here's my question, taking a specific scenario as an example :

Assume ImmediateData defaults to "yes" [as is currently the case].
Consider an initiator that wishes to use immediate data attempting to
login with a target that does not support immediate data.

I -> T : (does not explicitly send ImmediateData key, since the default
is its desired value).

T -> I : ImmediateData="no" (No ImmediateData key is received. Hence,
target needs to originate this key to indicate that it does not
support).

Is this considered the end of the negotiation, or does the initiator
(who is the responding party in this case) need to respond to the
offered key with a response indicating :
I -> T : ImmediateData="no"

Also :

a)  how does the above work in the case of list negotiation ?

b) What is meant by "the initiator always controls the
   request-response initiation and termination." (?).
   Could this be stated more clearly ?

Thanks,
Santosh


--
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Santosh Rao
Software Design Engineer,
HP-UX iSCSI Driver Team,
Hewlett Packard, Cupertino.
email : santoshr@cup.hp.com
Phone : 408-447-3751
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