Re: [ledbat] list of reasons for needing multiple TCP connections

Hi,

On Thu, 2008-11-20 at 14:54 -0800, Caitlin Bestler wrote:
> Joe Touch wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > 
> > Hi, Robb,
> > 
> > Appreciating the following, this isn't intended as an application
> > protocol, so we can't assume it would apply only to P2P. I.e., we need a
> > solution that can be used for any application, and there are several
> > applications that DO use multiple connections to increase bandwidth in
> > the typical case.
> > 
> 
> As a point of reference, part of the justification for doing iSCSI
> over multiple TCP connections within a session was because "It
> might be impossible to achieve the full bandwidth capability
> of the underlying physical transport by using a single TCP
> connection."
> 
> [http://storageconference.org/2003/papers/19-Meth-Design.pdf
> section 2.2]
> 

I'd like to add GridFTP to this, as another example. cf.:
http://www.globus.org/toolkit/docs/3.2/gridftp/

which points to:
http://www.globus.org/alliance/publications/papers/dataMgmt.pdf
where it says, on page 7:

"Parallel data transfer: On wide-area links, using multiple TCP streams
in parallel (even between the same source and destination) can improve
aggregate bandwidth over using a single TCP stream [10]. GridFTP
supports parallel data transfer through FTP command extensions and data
channel extensions."

Cheers,
Michael

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