Yep - been there done that.

I have ~30 linksys wrt54gl aps around the place.  After placing them all I
got occasional weirdness due to channel overlaps.  I suggest you draw a
scale map of your site and locate the APs on it.  Then change each one's
channel setting from Clear Transmit to an alternating pattern of 1, 6, and
11  These are the only three B and G channels that don't overlap.   It *may*
be possible to use channels 12 and 13 where you are, but sometimes that's
another problem (laptops with american drivers etc)

Also, if you have APs rather close together then lowering the transmit power
will also help reduce overlap.  For various social and physical reasons I
ended up with three offices in a row with an AP each.  Setting alternate
channels helped, but lowering the power was also needed before weird network
problems went away.



-----Original Message-----
From: Lloyd Palfrey [mailto:Lloyd at wsufftrust dot org dot uk] 
Sent: Tuesday, 5 September 2006 2:32 a.m.
To: m0n0wall at lists dot m0n0 dot ch
Subject: [m0n0wall] Limited or no connectivity


I have 20 odd access points serving up wireless internet access. M0n0wall is
the captive portal, dhcp and internet gateway.

At random periods users get "Limited or no connectivity". They can be
connected for hours then suddenly it drops. I'm in contact with Linksys who
make the access points to try and find out whats causing this. However I
know they're going to try and blame m0n0wall for the problem.

Does anyone know of anything which would be causing this?

All help gratefully received.

Lloyd Palfrey


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