Section 9.1.1 says:
the same ISID should be used in the Login process to multiple
target portal groups (of the same iSCSI Target or different
iSCSI
Targets). Note
that the ISID RULE (2.5.3) only prohibits reuse to
the same target portal group. It also does not "preclude" reuse to
other target portal groups.
The principle of conservative reuse "encourages"
reuse to other
target portal groups.
When a SCSI target device sees the same
(InitiatorName, ISID) pair in different sessions to different
target
portal groups, it can identify the underlying SCSI Initiator
Port on
each session as the same SCSI port (in effect, it can
recognize
multiple paths from the same source).
This is good but the target will
still have to sort out ISID's when they
are different under the same
situations named above. So, since the
target still has to have all the
code to sort this out, what good is
this statement?
I think the only thing keeping us
from saying you MUST use the same
ISID's is the fact that we have
allowed an iSCSI Initiator to have more than
one session to the iSCSI Target Portal
Group. Is that really necessary? If not,
then we could make this a MUST
and simplify the target code.
Eddy
