Re: Wireless considerably faster one way than the other

On 15 Jun 2006 13:35:06 -0700, "Dave Brown" <softwaredave@xxxxxxxxx>
wrote in <1150403706.863850.20530@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Acer Travelmate laptop with built-in Intel 2200GB 802.11b/g wireless
network adaptor, XP Pro.
Netgear ME102 802.11b Access Point, plugged into network hub.
2 more desktop machines plugged into the hub, both Win 2k, it's a 100Mb
network.
The Access Point is approximately 3 inches away from the laptop.

I'm experiencing really bad network throughput at the laptop end, but
have discovered that copying a large file from the laptop to one of the
desktop machines is fast - the problem seems to be only when
transmitting data TO the laptop. I get all sorts of network errors,
including disconnections. Signal strength on the laptop is a full set
of green bars when I look at the connection status, "excellent" when I
hover over the tray icon.

I downloaded QCheck, installed it on a desktop machine and the laptop.
When I run a throughput test at the laptop, sending from the laptop to
a desktop machine with 100kb packet size, I get roughly 5 to 6 Mbps,
which as I understand is as good as you can expect from 802.11b.
However, when I run the test from a desktop machine to the laptop, I
get around 30 kbps. Yep, kilobytes per second. And that's when it
works, most of the time the test fails - it only works reliably when I
reduce the packet size down to, say 5kb, then it shows a throughput of
about 1 Mbps.

Anyone have any idea what could be causing this? I've tried all
possible channel settings, and combinations of all other settings I can
see.

1. Restore all settings to default values.
2. Don't use huge packets, which increases the cost of errors.
3. Make sure the ME102 has the latest firmware.
4. Use the latest Intel reference drivers and software for the 2200BG.
5. Move the wireless units at least a few feet apart.
6. Try testing with:
(a) Iperf <http://dast.nlanr.net/Projects/Iperf/>.
(b) Netio <http://freshmeat.net/projects/netio/>
7. Check the Intel statistics after transmissions.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_How_To>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>
.

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