RE: IPS and SCTP

[Black_David@emc.com]

I agree, especially as data digests were separated from header
digests to allow proxies to do the proverbial "right thing" for
data integrity (CRC32C on data is preserved [end-to-end] through
the proxy, rather than stripped and regenerated by the proxy),
and iSCSI/SCTP to iSCSI/TCP proxies are quite likely to appear
as one consequence of running iSCSI over SCTP.

Thanks,
--David

> -----Original Message-----
> From: Mark Bakke [mailto:mbakke@cisco.com]
> Sent: Wednesday, August 28, 2002 11:23 AM
> To: Black_David@emc.com
> Cc: bidulock@openss7.org; ips@ece.cmu.edu
> Subject: Re: IPS and SCTP
> 
> 
> 
> Just one clarification; although header digests can be eliminated,
> data digests must remain for the same reasons given in the
> security draft.
> 
> --
> Mark
> 
> Black_David@emc.com wrote:
> > 
> > Brian,
> > 
> > > Sure.  Perhaps a start would be (for me) to write an
> > > individual submission extension draft for running, say,
> > > iSCSI over SCTP.  Would that be of interest to this WG?
> > > What would be the best timing for such a submission?
> > 
> > I can't speak for the WG as a whole, but that sounds like
> > a reasonable course of action to me.  Getting a first
> > version of your draft submitted far enough in advance
> > of the Atlanta meetings so that people will have time to read
> > and consider it (i.e., well before the "just prior to the
> > deadline" draft deluge) ought to allow the WG the opportunity
> > to decide whether to make it an official work item in Atlanta.
> > 
> > A few iSCSI over SCTP things to start with:
> > - Header digests can be eliminated since SCTP now uses CRC32C,
> >         and should result in a visible simplification of error
> >         recovery.
> > - Unless SCTP has changed to allow load balancing as part of
> >         its multi-homing/failover support, iSCSI sessions will
> >         need to support multiple SCTP sessions per connection
> >         for load balancing.
> > - SCTP's ability to avoid head-of-line blocking should be useful
> >         when immediate delivery of iSCSI commands is requested.
> > 
> > Enjoy,
> > --David
> > ---------------------------------------------------
> > David L. Black, Senior Technologist
> > EMC Corporation, 42 South St., Hopkinton, MA  01748
> > +1 (508) 249-6449            FAX: +1 (508) 497-8018
> > black_david@emc.com       Mobile: +1 (978) 394-7754
> > ---------------------------------------------------
> 
> -- 
> Mark A. Bakke
> Cisco Systems
> mbakke@cisco.com
> 763.398.1054
>