iSCSI : Query about parameter exchange

["Priya Viswambharan" <priyav@marantinetworks.com>]

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