LUN field in iSCSI Data PDU

["Venkat Rangan" <venkat@rhapsodynetworks.com>]

Section 2.8 specifies that the SCSI Data Header contains "LUN or Reserved
(0)" at offset 8-16 within the header. I am not clear under what
circumstandes it contains a LUN. Note that the LUN info was already sent in
an earlier SCSI CMD PDU. If a LUN is specified in SCSI Data PDU as well,
what is its relationship to the one sent in SCSI CMD?

If we look at Fibre Channel FCP_DATA framing, it does not include a LUN,
since the FCP_CMD has established the LUN for the exchange already.

Venkat Rangan
Rhapsody Networks Inc.
www.rhapsodynetworks.com