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AIR-LAP1142N-E-K9 and radios

Hello all,

the AIR-LAP1142N-E-K9 is a dual-Band 802.11a/g/n. This means it can transmit both a, g and n, right? I did a load stat using the WCS on this AP, and I don't understand the grouping of the radios.

The WCS shows the AP twice, as a 802.11a/n and as a 802.11b/g/n. What is the actual radio that the stats are for? The a/n radio has much more clients than the b/g/n radio. How do I see what radio the clients use the most? The reason why I ask is because I have two AIR-LAP1131AG-E-K9 in the same room, and they have 5 clients each, but the 1142 has 14-16. I suppose it's cause the clients prefer the 802.11n radio when searching for wifi?

The stat options on the WLC (running sw has no separate option for listing the n-radio - only a and b???  :

(Cisco Controller) >show client AP ?             


802.11a        Display information for 802.11a.

802.11b        Display information for 802.11b.

802.11-a49    Display information for 802.11a-4.9GHz.

Output (yes, I know the WCS-stats differ from the WLC-stats):

(Cisco Controller) >show client AP 802.11a S01-035

MAC Address        AP Id   Status         WLAN Id    Authenticated
-----------------  ------  -------------  ---------  -------------

00:16:ea:ed:10:46  56      Associated     1          Yes
00:24:d6:2e:c4:5e  56      Associated     5          Yes
00:24:d7:77:c9:60  56      Associated     1          Yes
00:22:fb:07:1c:50  56      Associated     1          Yes
00:1c:bf:37:30:0c  56      Associated     5          Yes
00:1f:3c:cb:fb:57  56      Associated     5          Yes
00:1e:65:8a:82:ae  56      Associated     1          Yes
18:3d:a2:5a:ea:78  56      Associated     1          Yes
34:51:c9:3a:6a:ab  56      Associated     1          Yes
00:24:d6:4d:11:e4  56      Associated     1          Yes
58:94:6b:24:87:78  56      Associated     1          No
00:24:d6:b0:8b:06  56      Associated     1          Yes
00:1c:bf:36:aa:66  56      Associated     5          Yes
00:16:ea:ef:63:6c  56      Associated     1          Yes

(Cisco Controller) >show client AP 802.11b S01-035

MAC Address        AP Id   Status         WLAN Id    Authenticated
-----------------  ------  -------------  ---------  -------------

00:22:69:68:42:ee  56      Associated     1          Yes

(Cisco Controller) >show client AP 802.11-a49 S01-035

MAC Address        AP Id   Status         WLAN Id    Authenticated
-----------------  ------  -------------  ---------  -------------

(Cisco Controller) >show client AP ?             

Rising star

WCS will display the AP's based on their radio, so any dual band AP will have an 802.11a/n & 802.11b/g/n listing in WCS; this is because they are physically seperate radios, antennas, and processors.

As for clients chosing the 802.11n AP's this can be for a number of reasons; bandwidth, protocol, signal strength, etc...

So it's can be tough to predict or justify why a client selected the AP it chose, as for the stats though, I am not sure what specifically your looking for. If you are just looking to see which radio is busiest there is a WCS report that should give you that information.



HI guys can you config suninterface on AIR-LAP1142N-E-K9 ?


If you convert it to run IOS then yes, you can configure it just like any other AP with multiple SSID and radio subinterfaces.


HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered