Re: Can "Enhanced G" really reach 125Mbps?

ohaya <ohaya@xxxxxxx> hath wroth:

To followup, I did some testing using iperf, between a wired machine and
the wireless (tried both the Buffalo and the Dynex PCI), and got about
20-21 Mbps, so I'm gathering that this is really not getting to that 125
Mbps.

That's what you'll get with 54Mbits/sec connection speed. You're not
getting a 125Mbit/sec connection.

At what distance were you testing? 54Mbits/sec craps out at about 15
meters range (using the stock antennas and a typical laptop client).
Using my rule-of-thumb, you get half the range for 4 times the
connection speed. So, 125Mbit/sec should crap out at about 11 meters
range.
<http://wireless.wikia.com/wiki/Wi-Fi#Performance_and_Speed>

One thing to watch for is that the connection speed indicated by the
wireless clients status monitor will show variations in connection
speed. The usual algorithm is to go as fast as you can when there's
no traffic (duh!), and then slow down when there's traffic to deal
with the errors. To the casual observer, it may look like you're
getting a 54Mbit/sec (or faster) connection, but unless you monitor
the traffic with a sniffer, or that the status page is fairly fast on
updating the speeds, you'll never see the reduction in connection
speed.

For the record, Buffalo tech support sent me a response to my inquiry.
They said that 54 Mbps was the highest that would appear in the Advanced
Configuration, but that the USB adapter would go faster than that if it
could. Systray would only show 54 Mbps maximum, but, according to them,
their Client Manager 3 should show higher rate if it was available.

No response from Dynex support to my similar questions :(...

Jim

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Jeff Liebermann jeffl@xxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.

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