DSL link aggregation?

Ed Allen era at jimani.com
Fri May 9 10:15:42 CDT 2008


On Wed, May 07, 2008 at 05:38:38PM -0500, Greg Brooks wrote:
> Bradley, thanks (and thank you to everyone else who was helpful as well!)
> for this.
> 
> Bittorrent is an innovative solution -- I like it! However, I'm hampered by:
> 
> * Corporate clients and their corporate IT departments who will be sniffy
> about using it.
> 
> * Unsophisticated users who are comfy with FTP and don't want to learn new
> tools.
> 
> * Many different clients who need the bandwidth boost, so a point-to-point
> solution isn't a good fit.
> 
> Soooo... looks like I may be the only guy in Plattsburg with a T-1. (That'd
> be my guess, anyway -- it's a pretty tiny town.)
> 
> (Background for the folks who asked: We're doing some outsourcing work for
> newspapers, and the typical work deliverable is a bundle of EPS pages that
> weighs in at 70-300 mb. All of our client papers have extremely high
> bandwidth and can download the pages quickly... it's getting them uploaded
> to FTP on deadline that's taking more time than we'd like.)
> 
FTP being based on UDP is connectionless so no worries about TCP connections
being trashed by confusion over IP addresses.

The BONDING section of the article pointed to, by Johnathan Hutchins I think,
specifically mentions that it works with DSL.

UDP is inherently unreliable so the receiving software must deal with packets
arriving from multiple routers, intermediate hosts, with differing amounts of
delay so FTP software reassembles out of order packets coming from different
addresses constantly.

So bonding should help, but I would like to ask if these pages could be generated
as "one page" files so that individual pages could be mirrored to a high speed
connected server while the next one is being assembled ?  That way you can
combine all the pages if needed for the final push at deadline across the high
speed link and spread the use of your limited upload speed out over time when it
would otherwise go unused.

--  
Ed Allen


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