RE: iSCSI: CRCs

[Black_David@emc.com]

As I recall the discussion, it was about facilitating
iSCSI to iSCSI "middle boxes" - gateways, proxies,
etc. of various forms that may want to muck with
the header for some reason.  Such a box is a target
on one iSCSI connection and initiator on another,
and only having to regenerate the header CRC
makes such a box easier to implement, and improves
the protection obtained from the data CRC.

--David

> -----Original Message-----
> From:	Pierre Labat [SMTP:pierre_labat@hp.com]
> Sent:	Wednesday, January 24, 2001 1:01 PM
> To:	ips@ece.cmu.edu
> Subject:	iSCSI: CRCs
> 
> David (Black),
> 
> 
> At the Orlando interim meeting, you said that the iSCSI header
> could be changed on the way to the target. Because the "bidi"
> information could be changed. (It is the justification
> for 2 CRCs).
> 
> Could you elaborate on that?
> 
> What are the situations where the iSCSI header could be modified?
> What is the value added to do that?
> 
> 
> Regards,
> 
> Pierre