ath(4) and 802.11g speed

Daniel O'Connor doconnor at gsoft.com.au
Fri Mar 10 05:10:54 UTC 2006


On Friday 10 March 2006 14:07, Damian Gerow wrote:
> : I suspect forcing 54Mbit will either not work at all (because the signal
> : isn't strong enough or your hardware doesn't support it), or it will
> : negotiate a speed up to 54Mbit (which would result in no functional
> : change).
>
> Okay, this has me a bit curious, so I dug into it a bit more:
>
>     SSID            BSSID              CHAN RATE  S:N   INT CAPS
>     linksys         00:06:25:7b:25:3d    6   11M 35:0   100 E
>     MYSSID          00:12:17:85:9a:3b   11   54M 39:0   100 E
>     wahoo62         00:13:46:47:0f:0e   11   54M  4:0   100 EPS
>
> I'd have thought that a S:N of 39:0 wouldn't be all that weak, no?  Looking
> at a post by Sam this past August, he calls 30:0 "very strong", though that
> was for an 802.11b link.  I'd think that the higher the number, the
> stronger the signal.  Is the above too weak to handle a full 54Mbps link?
 
Which SSID? MYSSID?
The linksys one looks like b only. 
The other 2 look like g.

Are you sure your card supports g? It may be able to see a g AP but only 
connects and b speeds.

What does ifconfig -m ath0 say?

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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