WLC 4402 & 1131AG - "grouping" ap's for different radio standards?

Question

Hi!
I've just bought a WLC 4402 Wireless controller and 20 APs running WLAPP.
I'm not sure how to define my question, so I'm serving you the whole story.
I work as an IT-apprentice on a school, and this school is located more or less nearby other institutions and private buildings, all running their private WLANs.
My plan is to deploy 1131AG ap's over a larger area. In some places, it's allready crowded with private ap's running on 802.11b/g. In those areas, my plan is to use only 802.11a for my ap's.
But some places, it would also be usefull having both, or only 802.11g (and maybe 802.11b).
I've just used the 4402 and ap's for about a week, so I'm no expert yet.
I can create different WLANS, and limit those wlans to different radio standards, but then I'll have to use different SSID's.
Now, i'm running two Wlans, sending out each their Vlan over two different SSID's. This works perfectly.
So my problem now is: how to make for instance a separate group of AP's (i.e. in a specific building) to run only on 802.11a without having to use a third SSID.
Is this possible, and if so, how?
Please awnser quickly, because I need this to work within monday :P
(I'm sorry for my bad english).
-John-

Answer 1

Hi John,
For the specified AP's why don't you set only the appropriate Data rates for the A Radio to enabled, and disabled for all the b/g Data rates?
Have a look;
Configuring Radio Data Rates
You use the data rate settings to choose the data rates the wireless device uses for data transmission. The rates are expressed in megabits per second. The wireless device always attempts to transmit at the highest data rate set to Basic, also called Require on the browser-based interface. If there are obstacles or interference, the wireless device steps down to the highest rate that allows data transmission. You can set each data rate to one of three states:
Basic Allows transmission at this rate for all packets, both unicast and multicast. At least one of the wireless device's data rates must be set to Basic.
Enabled The wireless device transmits only unicast packets at this rate; multicast packets are sent at one of the data rates set to Basic.
Disabled The wireless device does not transmit data at this rate.
Note At least one data rate must be set to basic.
You can use the Data Rate settings to set an access point to serve client devices operating at specific data rates. For example, to set the 2.4-GHz radio for 11 megabits per second (Mbps) service only, set the 11-Mbps rate to Basic and set the other data rates to Disabled. To set the wireless device to serve only client devices operating at 1 and 2 Mbps, set 1 and 2 to Basic and set the rest of the data rates to Disabled. To set the 2.4-GHz, 802.11g radio to serve only 802.11g client devices, set any Orthogonal Frequency Division Multiplexing (OFDM) data rate (6, 9, 12, 18, 24, 36, 48, 54) to Basic. To set the 5-GHz radio for 54 Mbps service only, set the 54-Mbps rate to Basic and set the other data rates to Disabled.
Hope this helps!
Rob
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