Re: iSCSI protocol - use of SendTargets

["Eddy Quicksall" <Quicksall_iSCSI@xxxxxxxxxxxxx>]

I agree with Ken on the reading below. You may have alredy figured this out but just to try to give a simple answer to your question ... suppose you have built a box that has several targets each with different ip addresses; the user at the initiator could just give one of the ip addresses as the "discovery address"; this could be the address of only one of the targets; the initiator can then log on as a discovery session using that address and use SendTargets to find the names and addresses of all targets.

 

Eddy

----- Original Message -----

From: Sandars, Ken

To: Parav Pandit ; ips@xxxxxxxx

Sent: Thursday, June 07, 2007 5:58 PM

Subject: RE: iSCSI protocol - use of SendTargets

Hi Parav,

 

Before any author shamelessly plugs their iSCSI publications, I suggest you have a quick re-read of RFC3720.

 

In particular, section 3.4 pages 37-40 cover some really important concepts that I think will help your understanding. Then jump to the start of section 3, page 17 for more concepts and definitions.

 

The specifics of the SendTargets command are in Appendix D.

 

HTH

Ken

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From: Parav Pandit [mailto:paravpandit@xxxxxxxxx]
Sent: Thursday, 7 June 2007 22:41
To: ips@xxxxxxxx
Subject: iSCSI protocol - use of SendTargets

Hi,

I am new to iSCSI protocol and gearing up.
Is this the right mailing list to ask questions related to  iSCSI protocol?

if yes,

1.  iSCSI target is identified by the network portal (IP + port).
So once the iSCSI target is identified by the network portal and Login to it is successful, why do we need to ask for SendTargets command?
TargetName and TargetAddress returned are immaterial (because we already know the target address to which we have logged-in), unless there are multiple addresses for them and failover is required used.
Or it is used for communicating different TCP port on which initiators can send TUR, Inquiry, Read, Write commands?

What is the expected information from the target in response to SendTargets command?

Regards,
Parav Pandit

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