Want to configure two air-ap1142n-a-k9 for roaming

I have two of the above AP's directly connected to a switch in my network. They both have identical configs (except for the host name and IP). When I have just one setup I have a fairly weak signal on the second and third floor, so I would like to connect the second on one of these floors, and be able to roam between floors without having to log into another SSID. How do I set these up so I can roam from one to another when moving from floor to floor?

Thanks!
VardataAsked:
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Craig BeckCommented:
Just configure the second AP exactly the same.  You may notice a brief disconnect (around 1s or so) but you won't have to log in again.
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phil435Commented:
You can set them to the same ssid and when you drop out of one you will connect to the other if its in range. The only thing that I would suggest would be a controller. This way when you are roaming there  is minimal latency between the ap changes.

You will also want to set the power levels appropriately so that clients on one floor are not connecting to the ap on the second floor. An analyzer is helpful for this. If you don't have one you can get one for your phone that will measure signal strength for free but remember its free.
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VardataAuthor Commented:
Thanks guys! I know certain switches can be used as the controller (Looks like the cheapest may be the 2500 series?), but I  wondered if an older (Cheaper!) switch could be updated and used? Also, do you know if Cisco's  virtual controller solution supports these AP's?
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Craig BeckCommented:
You really don't need a WLC for this.  If you went for the 2504 you'd be looking at around $500 at least to start with, for a 5-AP license.  What's the point?

The virtual controller does support these APs, but it'd cost you a bit more for the license and you'd need to run the image in VMWare.

Depending on what you actually need to do with these APs you could buy a 2nd-hand 4402 controller (easily less than $100) and put v7.0.250.0 code on it (That's as far as the 4400 WLCs will go).  That'd do for simple stuff, but like I say - what's the point?!
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phil435Commented:
True Craig. If you only plan on a handful of AP's then a controller is probably overkill. The advantage it brings is the ability to manage the configs and it can adjust the power levels realtime. If you only need two then its probably not worthwhile.
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Craig BeckCommented:
Yep RRM isn't worth the $500 for 2 APs - just set them to different channels manually and leave them alone.  I'd not be bothered with config management either as they'll just be configured exactly the same with different hostnames and IP addresses.
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VardataAuthor Commented:
Thank you for your help...You answered all my questions perfectly!
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