On Tue, 17 Aug 2010 09:11:09 -0400, Tim Slattery <Slattery_T@bls.gov>
wrote:
>Shoe <j_shoe@yahoo.com> wrote:
>
>>I have a wireless router with hard-wired desktops and a wireless
>>laptop and printer. I ran speed checks from several different web
>>sites yesterday and they were all pretty much in agreement. Download
>>speed was terrific, around 18,000 Kbps. Upload speed was absolutely
>>awful at 350 Kbps. I got similar results on the wireless laptop. Any
>>thoughts on cause of slow upload speed?
>
>Many ISPs operate asymmetrically, which is exactly what you're
>describing. The idea, I think, is to prevent you from running a web
>server from your home computer, which could eat up way too much of
>their bandwidth.
>
>That's just speculation, but if there's a better explanation for that
>policy, I'd love to hear it.
I believe you have it backwards. It's not that they made the upload
speed small in order to stop you from running a server, but instead
some ISPs don't want you running a server because the upload speed is
small.
It's a simple matter of economics. When the ISPs, the cable companies
and DSL providers, for example, were getting ready to design their
systems, they analyzed the expected user behavior and determined that
most residential users would download far more data than they would
upload, so the download pipes were built bigger than the upload pipes,
saving the ISPs a lot of money in the process. Having done that, it
became necessary to limit the user's ability to upload large amounts
of data because the pipes can't handle it.
That's slowly changing now, with upload speeds being given a little
more room to breathe, but it's still wildly asymmetric, and rightly
so. In my area, the business class accounts are symmetrical, which
also makes sense.