RE: iSCSI Markers

["Glenn Dasmalchi" <glennd@chelsio.com>]

> -----Original Message-----
> From: John Hufferd [mailto:hufferd@us.ibm.com]
> Sent: Thursday, January 10, 2002 1:27 AM
> To: ips@ece.cmu.edu
> Subject: iSCSI Markers
>  
> I see no relationship to COWS, except both have an 8 byte 
> header.   If you
> have TUFs, you do not need to have Word Stuffing.  The 
> problem with COWS is
> not is header it is the Word Stuffing and the Replacement Pointers.
> 
The random key marker approach in the TUF draft has a non-zero
probability of generating a "false positive" in theory (requires
resegmenting middle boxes + aliased data + exact length resegmentation,
etc.). Personally I think the probability is so low as to not be a
consideration, but a COWS approach using TUF-style segmentation does
address the issue.

The point about the iSCSI charter is interesting, do others feel that
the segmentation requirements for TUF/PDU Alignment disqualify it from
consideration for iSCSI?

-Glenn