RE: iSCSI: ISIDs

["John Hufferd" <hufferd@us.ibm.com>]

I overlooked putting the IPS group on my note to David, so let me re-post
it with David's reply.

David,
First, it is not clear that you do not come up with others problems, a full
circle tends to do that.

I do not see any reason for changing, in the protocol spec., the layout of
the TSID.  This kind of sounds like an implementation.

.
.
.
John L. Hufferd
Senior Technical Staff Member (STSM)
IBM/SSG San Jose Ca
Main Office (408) 256-0403, Tie: 276-0403,  eFax: (408) 904-4688
Home Office (408) 997-6136
Internet address: hufferd@us.ibm.com


Black_David@emc.com on 09/07/2001 11:56:06 AM

To:   John Hufferd/San Jose/IBM@IBMUS, Black_David@emc.com
cc:
Subject:  RE: iSCSI: ISIDs



With the important difference that all of Nick's scenarios in
which ISID mismanagement causes disasters are gone, along with
any need for a cross portal-group "isid manager".  I'll take
this sort of simplification and increase in resistance to mistakes
any day.  Next step will be to divide the 32-bit TSID into an
8 bit target portal group and 24 bit ID within portal so that
there's no confusion about where to go to deal with a session.

--David

> -----Original Message-----
> From: John Hufferd [mailto:hufferd@us.ibm.com]
> Sent: Friday, September 07, 2001 2:26 PM
> To: Black_David@emc.com
> Subject: RE: iSCSI: ISIDs
>
>
>
> David Said:
> "If we want the "Option A" functionality to aggressively
> blow away the old session, we'd probably have to add a bit to login
> saying "destroy the old session with this TSID (after
> checking that the
> authentication matches)" in order to distinguish the "error recovery"
> vs. "expedited destruction of old session" scenarios."
>
> The use of this "blow away" bit sounds similar to option B.
> This seems to
> bring us full circle.
>
> And the only thing that we solved is how to hand out ISIDs
> (by not doing
> it).
>
>
> .
> .
> .
> John L. Hufferd
> Senior Technical Staff Member (STSM)
> IBM/SSG San Jose Ca
> Main Office (408) 256-0403, Tie: 276-0403,  eFax: (408) 904-4688
> Home Office (408) 997-6136
> Internet address: hufferd@us.ibm.com
>
>