Vinod,

There is nothing in 802.11 that coordinates the channel assignment of
APs.  So by necessity, anything that does so is proprietary.  However,
there is new work being investigated in the IETF, called CAPWAP (control
and provisioning of wireless access points) that would address this
issue.  There will be a BOF on this topic at the IETF in November.

As to your second question, the packets sent by P and Q will go to the
AP each has associated with.  The packets are addressed by the BSSID
(AP's MAC address), not the SSID.  How each node chooses the AP to
associate with in the overlap situation you describe (and in all other
situations) is also not described in the standard.  Every implementation
is proprietary and many are pretty lame.  Because of some of those lame
implementations, 802.11 is know as the "bug light" protocol in some
circles.

 -Bob
 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Geek
Sent: Friday, October 31, 2003 8:44 AM
To: [EMAIL PROTECTED]
Subject: [BAWUG] AP channel allocation


Hi everyone. I had some questions about AP Channel
allocation and am hoping someone can answer those for
me. When an AP is installed, its provided a static
channel to work on. But i have heard that there are
some intelligent AP's which can coordinate with
surrounding AP's and choose the best channel to work
on. Are such 'intelligent' AP's proprietary or part of
the 802.11 standard? Would appreciate it if someone
could describe the details of the protocol used in
these 'intelligent' AP's.
My other question is, If two co-located AP's(say AP1 &
AP2) are assigned the same SSID and Channel number,
and suppose there are two nodes(say P & Q) which are
in an area overlapped by both the AP1 and AP2, then to
which AP will the packets of P or Q go? 

Thanks in advance,
Vinod

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