[27393] in resnet
Re: Trouble with Wireless Cards
daemon@ATHENA.MIT.EDU (Doughty, Marc)
Tue Feb 28 15:01:59 2012
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Date: Tue, 28 Feb 2012 14:58:02 -0500
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: "Doughty, Marc" <marc_doughty@BROWN.EDU>
To: RESNET-L@listserv.nd.edu
In-Reply-To: <CAAva=nMjE3c2Tu0VXsaUm8saDe9K714wwTjwDCLodSw+7BuFpw@mail.gmail.com>
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I haven't seen modern WiFi cards that don't work properly, we have TTLS
(read: complex) security here and I drag in all sorts of hacked, cheap
hardware. I would try to bump back to 'standard' 20MHz bandwidth and set
the basic rate to 'auto' if possible. I don't like having B/G/N running all
at once; if you can, I would go G-only on the 2.4GHz band, N-only on 5GHz.
B-only stuff hasn't shipped in a while.
WiFi is like having a hub, only worse. In some cases I'd rather have two
50mbit hubs loaded with clients than one 100mbit one, more collision
domains can be better, even if it sometimes means lowering peak bandwidth.
If your APs have dual antennas and support diversity, you can sacrifice
maximum individual client bandwidth and instead have two totally different
channels going simultaneously, which might be better in a busy environment.
Also, I imagine it's really hard to find 40MHz free in some circumstances,
your APs might be stepping all over each other.
- Marc Doughty
"If you aren't sure who is the give-way vessel, you are the give-way
vessel."
On Tue, Feb 28, 2012 at 2:31 PM, Robert Wilson <rwilson@mccallie.org> wrote=
:
> We had issues with some Realtek adapters. When we switched them the TKIP,
> they'd connect.
>
> Robert
>
>
> On Tue, Feb 28, 2012 at 9:51 AM, Andy Voelker <avoelker@email.wcu.edu>wro=
te:
>
>> Realtek 8188CE and 8191C (won=92t connect at all)
>
>
>
>
> --
> Robert Wilson, McCallie School, Chattanooga, TN
> ___________________________________________________ You are subscribed t=
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I haven't seen modern WiFi cards that don't work properly, we have =
TTLS (read: complex) security here and I drag in all sorts of hacked, cheap=
hardware. I would try to bump back to 'standard' 20MHz bandwidth a=
nd set the basic rate to 'auto' if possible. I don't like havin=
g B/G/N running all at once; if you can, I would go G-only on the 2.4GHz ba=
nd, N-only on 5GHz. B-only stuff hasn't shipped in a while.<br>
<br>WiFi is like having a hub, only worse. In some cases I'd rather hav=
e two 50mbit hubs loaded with clients than one 100mbit one, more collision =
domains can be better, even if it sometimes means lowering peak bandwidth. =
If your APs have dual antennas and support diversity, you can=20
sacrifice maximum individual client bandwidth and instead have two=20
totally different channels going simultaneously, which might be better in a=
busy=20
environment. Also, I imagine it's really hard to find 40MHz free in som=
e circumstances, your APs might be stepping all over each other.<br clear=
=3D"all"><br>- Marc Doughty<br>"If you aren't sure who is the give=
-way vessel, you are the give-way vessel."<br>
<br><br><div class=3D"gmail_quote">On Tue, Feb 28, 2012 at 2:31 PM, Robert =
Wilson <span dir=3D"ltr"><<a href=3D"mailto:rwilson@mccallie.org">rwilso=
n@mccallie.org</a>></span> wrote:<br><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
We had issues with some Realtek adapters. When we switched them the TKIP, t=
hey'd connect.<div><br></div><div>Robert</div><div><br><br><div class=
=3D"gmail_quote"><div class=3D"im">On Tue, Feb 28, 2012 at 9:51 AM, Andy Vo=
elker <span dir=3D"ltr"><<a href=3D"mailto:avoelker@email.wcu.edu" targe=
t=3D"_blank">avoelker@email.wcu.edu</a>></span> wrote:<br>
</div><div class=3D"im"><blockquote class=3D"gmail_quote" style=3D"margin:0=
0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Realtek 8188CE and 8=
191C (won=92t connect at all)</blockquote></div></div><span class=3D"HOEnZb=
"><font color=3D"#888888"><br>
<br clear=3D"all"><div><br></div>-- <br>Robert Wilson, McCallie School, Cha=
ttanooga, TN<br>
</font></span></div><div class=3D"HOEnZb"><div class=3D"h5">
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</p></div></div></blockquote></div><br>
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