- Broadband speed
- Posted by Maurice Batey on August 17th, 2007
3 weeks ago I started using an ADSLMax broadband connection, with a Netgear
DG834G router/modem. I'm about 3km from the exchange.
The router statistics show a 'download connection' speed of (now it's settled
down) around 3.9Mbps.
But the various speed testers I have just tried all show a download speed of
around 2.6Mbps.
As the original estimate of what I might expect was only 1.5Mbps, I'm not
unhappy, but I'm curious as to why the router's 'connection' speed is some 50%
higher than the 'speedtest' speeds.
--
Maurice
(Retired in Surrey, UK)
(Remove 'removethis.' to reply by email)
- Posted by Andy Burns on August 17th, 2007
On 17/08/2007 18:38, Maurice Batey wrote:
if your sync rate is just under 4Mb/s the line will be capped to 3Mb/s,
with about 40 bytes of TCP+IP headers per 1460 data bytes you're not
miles adrift.
http://aa.nu/aa/aaisp/maxatm.html
http://aa.nu/aa/aaisp/maxmagic.html
- Posted by ato_zee@hotmail.com on August 17th, 2007
On 17-Aug-2007, Andy Burns <usenet.july2007@adslpipe.co.uk> wrote:
Noticed the same effect, I'm using a basic Draytek Vigor 2600 4-port,
not the plus versio for ADSL2 ADSLMax or whatever.
Would buying a later Draytek that supports the higher rates
make it go faster, or is the max speed, length of line/attenuation/SNR
determined?
- Posted by Eeyore on August 17th, 2007
Maurice Batey wrote:
The 3.9Mbps is the highest speed theoretically possible and if it's anything like
my router this includes an 'overhead' of about 10% that you never actually 'see'.
The highest download speed *to your PC* achievable with max dsl for example is
7150 kbps not the fabled '8 meg'. Although the router can indeed sync at 8128kbps
it doesn't deliver that speed to your PC..
Additionally, all speed tests operate over the real internet which has all manner
of traffic issues. That'll reduce the figure further. Try the same test at
different times of the day and you'll get different results as a result.
Graham
- Posted by Eeyore on August 17th, 2007
Andy Burns wrote:
Capped ?
Graham
- Posted by Kraftee on August 17th, 2007
ato_zee@hotmail.com wrote:
Why buy a new one when Draytek have a special firmware version for
long lines?
- Posted by David Quinton on August 18th, 2007
On Sat, 18 Aug 2007 00:22:31 +0100, "Kraftee"
<kraftee@b&e-cottee.me.uk> wrote:
I use v2.5.6_UK2 and it made a big difference.
as an aside...
Please help me with something that's been bugging me:
Am I imagining it, or could I have seen the word "INTERLEAVED"
somewhere in the Draytek Admin (or maybe in Syslog)?
Seems to have disappeared!
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- Posted by Andy Burns on August 18th, 2007
On 17/08/2007 23:28, Eeyore wrote:
yes, deliberately limited to
- Posted by Kraftee on August 18th, 2007
David Quinton wrote:
Interleaving is something which is put on the line by BT to help
improve the sync speed (causing problems with latency & lag).
I wouldn't worry to much about it unless you're an online game player
- Posted by Eeyore on August 18th, 2007
Kraftee wrote:
It reduces the sync speed IME. OTOH it seems to provide a more reliable
connection on a marginal line.
Graham
- Posted by David Quinton on August 20th, 2007
On Sat, 18 Aug 2007 23:34:36 +0100, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:
Yeah sorry.
I was wondering where I could have seen it displayed on my Draytek
2600 Admin stuff.
I was wondering whether it has been removed when I recently downgraded
from 8Mb to 2Mb Demon package.
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- Posted by David Quinton on August 21st, 2007
On Mon, 20 Aug 2007 08:11:53 +0100, David Quinton
<usenet_2005D_email@REMOVETHISBITbizorg.co.uk> wrote:
Aha - it wasn't on my Draytek stats, but on my old ADSLNation X-Modem
CE.
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