Balance the load was probably the wrong wording.  I was picturing the wireless 
signal as pie.  And picturing a VirtualAP to be taking away half that pie from 
the main ap.

But it seems that is not that case.
The virtualAP is so that there can be a hotspot running on the same hardware as 
the main ap which uses vlans.  For now they have to run together, due to 
limited tower space.  

Since the hotspot side is going away, I hope to be able to phase them out 
entirely.

Thanks
-Keith-


----- Original Message -----
From: Butch Evans <[email protected]>
Sent: Thu, 4/9/2009 11:36am
To: Mikrotik discussions <[email protected]>
Subject: Re: [Mikrotik] Virtual AP Question

On Thu, 2009-04-09 at 10:25 -0500, Butch Evans wrote:
> Keith said:
> Basically, are the MT"s smart enough to balance the load between them
> effciently?

Keith, I'm not sure what you mean by "balance the load".  There is a
little bit of overhead for each virtual AP.  The AP will be sending out
beacons for both the physical AP AND the virtual AP.  

> Or if I have a VirtualAP, does it carve a chunk of usable Wireless space
> out, so that the main AP can't use it?

There will be packet traffic in the interface queues for both the
physical AP and the virtual AP.  I'm not sure how this is handled at a
"low level".  That is something that is handled by the Atheros driver
code.  

> I'm transitioning clients over, and some of the AP's have 50+ clients..
> thus maxing the card.  If I add the VAp to help move them, does it make
> those 50+ get worse signal right out of the gate?

SHouldn't be worse signal, however you will see a little more overhead.
The process of creating a virtual AP, transition clients, build a new
physical AP is my "recommended path", however.

-- 
********************************************************************
* Butch Evans                   * Professional Network Consultation*
* http://www.butchevans.com/    * Network Engineering              *
* http://www.wispa.org/         * WISPA Board Member               *
* http://blog.butchevans.com/   * Wired or Wireless Networks       *
********************************************************************


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