1532 UNI channel availability

[panayiotiscy]

Hello all,

I am facing the following issue.

On our wlc, we have only enabled the UNI-I 5ghz channels.

We have recently introduced some new 1532 ap. After joining the controller, i found out that the channel assignment changed to custom for the 1532 aps. In addition, the channels start from: 100 up to 140. The radio 1 flaps and i believe this is because the UNI-II and UNI-II extended are not enabled.

Is there any way to add the UNI-I frequency in the allowed frequencies on the 1532 ?

Thanks

[Moin Ilyas]

Hello panayiotiscy,

I don't believe you could do that, because of the following reason.

Radio Configuration

There are two radio configurations for the 1532 AP radio, the 2-GHz MIMO radio and the 5-GHz MIMO radio. The 2-GHz MIMO radio operates in 2.4 GHz ISM band. It supports up to 13 channels. The 5-GHz MIMO radio operates in the UNII-2 band (5.25 – 5.35 GHz), the UNII-2 Extended/ETSI band (5.47 – 5.725 GHz), and the upper ISM band (5.725 – 5.875 GHz). It supports up to 16 channels.

Source: http://www.cisco.com/c/en/us/td/docs/wireless/access_point/1530/quick/guide/ap1532qsg.html

Click HERE to refer to the data sheet for the number of channels that are supported for each regulatory domain.

Hope that helps.

[panayiotiscy]

Hello Ilyas, Thanks for answering. So if this is the case here, then out of your experience,is the majority of the end device vendors capable of connecting the uni-2 and upwards channels? Is there any special reason that prevents the 1532s from operating under uni-1 as well? Thanks

[Moin Ilyas]

Hello panayiotiscy,

First I would answer to your second question.

As 1530 Series APs are Outdoor APs, whereas U-NII Low (U-NII-1): 5.15-5.25 GHz is to be used indoor only. That is the reason that prevents the 1532 AP from operating under UNII-1.

And for your first question, I'm not really sure about that, but I believe it totally depends on the device and what does it used for. If the device is meant to be used outdoors, the vendors must be capable of connecting the UNII-2 and upward channels.

Further more, the flexibility of supporting dual bands allows customers to use high-gain directional antennas for backhaul on 5 GHz while deploying omnidirectional antennas for access on 2.4 GHz.

Hope that helps.

[panayiotiscy]

Hello Ilyas,

Thanks for your feedback. For me, it doesnt make any sense to prohibit the 1532 from utilizing the Unii-1 channels. The "outdoor" term is quite broad these days and it doesnt necessarily mean that these aps should only serve as mesh or point to point aps. But, i understand that its not up to me or you to change that!

On a more important thing now, i am puzzling to understand why the 1532 is not able to utilize even the U-nii-2 channels. This is the output from the ap 1532:

show controllers int dot 1

interface dot11radio1

radio AIR-AP1532A, Base Address xxxxx, BBlock version 0.00, Software version 448.04.0

Serial number:

Number of supported simultaneous BSSID on Dot11Radio1: 16

Carrier Set: ETSI (OFDM) (EU) (-E)

Uniform Spreading Required: Yes

Configured Frequency: 5580 Mhz Channel 116 (DFS enabled)

Allowed Frequencies: 5500(100) 5520(104) 5560(112) 5580(116) 5660(132) 5680(136) 5700(140)

Listen Frequencies: 5180(36) 5200(40) 5220(44) 5240(48) 5260(52) 5300(60) 5320(64)5500(100) 5520(104) 5560(112) 5580(116) 5660(132) 5680(136) 5700(140).

show version:

cisco AIR-CAP1532E-E-K9 

The u-nii-1,u-nii-2 and u-nii-2e have been enabled on the wlc.

Any ideas?

Thanks

[Moin Ilyas]

Hello panayiotiscy,

I believe you are based in Cyprus.

Cyprus comes under Regulatory Domain -E.

Click HERE for a list of Regulatory Domains.

And for Regulatory Domain -E, you have the following Channels Available:

-E Domain:

● 2. 412 to 2.472 GHz; 13 channels

● 5.500 to 5.580 GHz; 5 channels

● 5.660 to 5.700 GHz; 3 channels

Source: http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1530-series/data_sheet_c78-728356.html?cachemode=refresh

Hope that helps.