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DG834G wireless performance problem

 
 
seaandflag@hotmail.com
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      07-29-2006, 10:49 AM
Hello,

there must be something wrong with my wireless network configuration on
a Netgear DG834G.
When my laptop is connected through the RJ-45 ports to the router, I
get internet access speeds close to 6Mbit/s (I'm testing the speed
using the ADSL speed test on http://www.adslguide.org.uk).

Now, when I connect the laptop through the wireless interface I get
speeds around 2Mbit/s. Even when I'm transferring files through 2 PC
connected wirelessly on the LAN side the performance is quite poor.

I'm getting headaches from this!! Removing any setting related to
wirelss encription and firewall didn't improve anything.
(note: when I'm testing the laptop is the only device attached to the
router)

The firmware version is the most recent (V4.01.06 I believe).

Do you have any tips? I'm getting crazy!

Cheers
Luke

 
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Conor
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      07-29-2006, 11:24 AM
In article <(E-Mail Removed). com>,
says...
> Hello,
>
> there must be something wrong with my wireless network configuration on
> a Netgear DG834G.
> When my laptop is connected through the RJ-45 ports to the router, I
> get internet access speeds close to 6Mbit/s (I'm testing the speed
> using the ADSL speed test on http://www.adslguide.org.uk).
>
> Now, when I connect the laptop through the wireless interface I get
> speeds around 2Mbit/s. Even when I'm transferring files through 2 PC
> connected wirelessly on the LAN side the performance is quite poor.
>
> I'm getting headaches from this!! Removing any setting related to
> wirelss encription and firewall didn't improve anything.
> (note: when I'm testing the laptop is the only device attached to the
> router)
>
> The firmware version is the most recent (V4.01.06 I believe).
>
> Do you have any tips? I'm getting crazy!
>

What connection speed to the router is the Wifi adapter in the PCs
reporting? Also remember that the Wifi point on the router is a single
connection so if you've two computers using Wifi simultaneously, the
throughput for each computer will only be up to 50% of the max speed.


--
Conor

"No trilogy should have more than four books" - Arthur C. Clarke
 
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Martin Underwood
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      07-29-2006, 11:29 AM
(E-Mail Removed) wrote in message
(E-Mail Removed) om:

> Hello,
>
> there must be something wrong with my wireless network configuration
> on a Netgear DG834G.
> When my laptop is connected through the RJ-45 ports to the router, I
> get internet access speeds close to 6Mbit/s (I'm testing the speed
> using the ADSL speed test on http://www.adslguide.org.uk).
>
> Now, when I connect the laptop through the wireless interface I get
> speeds around 2Mbit/s. Even when I'm transferring files through 2 PC
> connected wirelessly on the LAN side the performance is quite poor.
>
> I'm getting headaches from this!! Removing any setting related to
> wirelss encription and firewall didn't improve anything.
> (note: when I'm testing the laptop is the only device attached to the
> router)
>
> The firmware version is the most recent (V4.01.06 I believe).
>
> Do you have any tips? I'm getting crazy!


What speed does the laptop's wireless adaptor say it's connecting at? I've
found that I get, at best, about half the bit rate that the connection
claims to be running at - for example, if it says it's connected at 24 Mbps,
a large file copy to/from a PC connected by Ethernet achieves a maximum of
about 1.2 MB/sec, assuming 1 byte is very roughtly equivalent to 10 bits by
the time you've taken into account TCP overheads. I'm using a Netgear WG511T
wireless adaptor to a Netgear DG834GT router, using ordinary Wireless G (ie
max of 54 Mbps) because I found that 108 Mbps was too prone to interference
from other networks (as well as probably causing interference for them on
most channels, given that 108 is two 54 channels bonded together).

Try repeating your local and internet tests with the PC next to the router
to see if signal strength makes a difference.


 
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StarEye
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      07-29-2006, 03:19 PM

Martin Underwood wrote:
> (E-Mail Removed) wrote in message
> (E-Mail Removed) om:
>
> > Hello,
> >
> > there must be something wrong with my wireless network configuration
> > on a Netgear DG834G.
> > When my laptop is connected through the RJ-45 ports to the router, I
> > get internet access speeds close to 6Mbit/s (I'm testing the speed
> > using the ADSL speed test on http://www.adslguide.org.uk).
> >
> > Now, when I connect the laptop through the wireless interface I get
> > speeds around 2Mbit/s. Even when I'm transferring files through 2 PC
> > connected wirelessly on the LAN side the performance is quite poor.
> >
> > I'm getting headaches from this!! Removing any setting related to
> > wirelss encription and firewall didn't improve anything.
> > (note: when I'm testing the laptop is the only device attached to the
> > router)
> >
> > The firmware version is the most recent (V4.01.06 I believe).
> >
> > Do you have any tips? I'm getting crazy!

>
> What speed does the laptop's wireless adaptor say it's connecting at? I've
> found that I get, at best, about half the bit rate that the connection
> claims to be running at - for example, if it says it's connected at 24 Mbps,
> a large file copy to/from a PC connected by Ethernet achieves a maximum of
> about 1.2 MB/sec, assuming 1 byte is very roughtly equivalent to 10 bits by
> the time you've taken into account TCP overheads. I'm using a Netgear WG511T
> wireless adaptor to a Netgear DG834GT router, using ordinary Wireless G (ie
> max of 54 Mbps) because I found that 108 Mbps was too prone to interference
> from other networks (as well as probably causing interference for them on
> most channels, given that 108 is two 54 channels bonded together).
>
> Try repeating your local and internet tests with the PC next to the router
> to see if signal strength makes a difference.


When I'm doing the tests I'm connected practically at 30cm from the
router. Interestingly the negotiated speed varies between 54Mbp/s and
48Mbp/s. The effective speed to the network is no more than 2Mbp/s
(bits per second and not Bytes per seconds).

 
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Tx2
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      07-29-2006, 03:24 PM

"StarEye" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) oups.com...

[...]

> When I'm doing the tests I'm connected practically at 30cm from the
> router.


The radiation patterns from omni-directional antennae are not always
strongest just because you are close.
I doubt this has any reflection on your immediate problem though, but it's
perhaps worth pointing out.

Have you tried changing wireless channels at all?


 
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StarEye
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      07-29-2006, 04:09 PM

Tx2 wrote:
> "StarEye" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) oups.com...
>
> [...]
>
> > When I'm doing the tests I'm connected practically at 30cm from the
> > router.

>
> The radiation patterns from omni-directional antennae are not always
> strongest just because you are close.
> I doubt this has any reflection on your immediate problem though, but it's
> perhaps worth pointing out.
>
> Have you tried changing wireless channels at all?


Tried different positions. tried channels 1, 7, 11 and 13... with no
sensible change in the results... I'm wondering if the problem couldn't
be related to a DG834G.v3 firmware bug.

Next I will try to play with the settings on my laptop wireless
interface and the rwin parameter.

 
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StarEye
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      07-29-2006, 07:13 PM

StarEye wrote:
> Tx2 wrote:
> > "StarEye" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed) oups.com...
> >
> > [...]
> >
> > > When I'm doing the tests I'm connected practically at 30cm from the
> > > router.

> >
> > The radiation patterns from omni-directional antennae are not always
> > strongest just because you are close.
> > I doubt this has any reflection on your immediate problem though, but it's
> > perhaps worth pointing out.
> >
> > Have you tried changing wireless channels at all?

>
> Tried different positions. tried channels 1, 7, 11 and 13... with no
> sensible change in the results... I'm wondering if the problem couldn't
> be related to a DG834G.v3 firmware bug.
>
> Next I will try to play with the settings on my laptop wireless
> interface and the rwin parameter.


OK... at last resort I cascaded another wireless router (a Netgear
WGT624) to the DG834G (the DG834G with the wireless interface turned
off). The wireless parameters were identical.

I reached a speed close to 6.1 Mbit/s.

IMHO, it looks like a problem with the DG834G firmware. :-(

 
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