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New Contributor
Posts: 4
Registered: ‎10-23-2011

AP-85 2.4 GHz Radio Issue

Hi

I'm having an issue with a few of my AP-85 and I'm not sure if its something I can fix or are these APs toast and they need to be replaced.

From what I can tell the 2.4 GHz radio are not transmitting any signal. The APs are in AP mode and ARM is set not to turn off the radios. Different antennas have been tried on radio0 connectors but none seem to be transmitting. The radio does seem to be able to receive signals. It was able to detect an ad-hoc network and the RSSI on the case do light up. I have tried retesting one of the APs but that didn't seem to work either.

Does anyone have ideas or experienced this issue?

Thanks
Guru Elite
Posts: 21,543
Registered: ‎03-29-2007

Re: AP-85 2.4 GHz Radio Issue

I hate to ask this, but are you plugging into the right connectors? The 5ghz is on the left side top and bottom (antenna 0) and the 2.4 ghz is on the right side top and bottom. What antennas are you using and what did you set the output to?


Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Aruba Employee
Posts: 571
Registered: ‎04-17-2009

AP-85 2.4 GHz Radio Issue

I'd start by looking at a "show ap config ap-name". Verify that the config has the radio on and transmitting.

You also might want to take a look at the output of a "show ap debug radio-stats ap-name someAP radio 0 advanced". There's a lot of useful information in there. Run that on radio 0 and radio 1. Not sure about the 85, but with this command, radio 1 is typically 2.4.

Mode Aware isn't turned on in the ARM settings, is it?

Thanks,
Zach
Thanks,

Zach Jennings
New Contributor
Posts: 4
Registered: ‎10-23-2011

Re: AP-85 2.4 GHz Radio Issue

I have the antennas on the right outputs. The 2.4 GHz are labelled radio0 and the 5 GHz are labelled radio1. When I look at the transmitting status for radio0, it show the the number of transmitted packets almost equals the number of transmittion errors. What would be causing so many transmittion errors?
Guru Elite
Posts: 21,543
Registered: ‎03-29-2007

Re: AP-85 2.4 GHz Radio Issue




No. The 5ghz is radio 0 and the 2.4ghz is radio 1



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

New Contributor
Posts: 4
Registered: ‎10-23-2011

Re: AP-85 2.4 GHz Radio Issue

No, radio 0 is 2.4 GHz. When 802.11a is turned off, radio1 is disabled.
Aruba Employee
Posts: 571
Registered: ‎04-17-2009

Re: AP-85 2.4 GHz Radio Issue




I think I understand the confusion here. Labeled on the AP case, radio 0 is 2.4Ghz and radio 1 is 5Ghz. However, when you run the debug command on the radio stats, it's the other way around. So, the following command will give you the stats on the 2.4Ghz radio:

show ap debug radio-stats ap-name someAP radio 1 advanced

I just tried disabling the 5Ghz radio on one of my dual radio APs, and it still responded with "radio 1" as being 2.4Ghz via the above command. I don't have an AP-85 to test this on, but I can't imagine that it would differ that much.

Simple way to check, assuming that you do have 5Ghz disabled, is run the "show ap arm history" command. This will show you which radio is enabled and the channel it is on. For example:

(Aruba3200) #show ap arm history ap-name "AP 2"

Interface :wifi0
Interface :wifi1
ARM History
-----------
Time of Change Old Channel New Channel Old Power New Power Reason
-------------- ----------- ----------- --------- --------- ------
2011-10-30 14:25:51 1 6 24 24 E
2011-10-16 10:11:42 11 1 24 24 E
2011-10-13 10:02:23 1 11 24 24 E

This is how mine looked after I disabled 5Ghz. As you can see above, wifi1, aka radio1, is still 2.4Ghz.

I also ran the ap debug radio-stats command to verify that radio 1 is still 2.4Ghz, as it is still seeing busy times:

(Aruba3200) #show ap debug radio-stats ap-name "AP 2" radio 1 advanced | include Busy
Channel Busy 1s 32
Channel Busy 4s 17
Channel Busy 64s 15
Ch Busy perct @ beacon intvl 34 35 37 39 41 35 23 36 37 34 33 35 34 25 29 30 33 33 31 34 35 29 15 37 42 37 37 38 32 18

(Aruba3200) #show ap debug radio-stats ap-name "AP 2" radio 0 advanced | include Busy
Channel Busy 1s 0
Channel Busy 4s 0
Channel Busy 64s 0
Ch Busy perct @ beacon intvl 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Let me know if this helps clear things up. It is very confusing as to why radio 0 and radio 1 labeled on the box do not reflect what you see on the controller.

Zach

Thanks,

Zach Jennings
Guru Elite
Posts: 21,543
Registered: ‎03-29-2007

Re: AP-85 2.4 GHz Radio Issue


I think I understand the confusion here. Labeled on the AP case, radio 0 is 2.4Ghz and radio 1 is 5Ghz. However, when you run the debug command on the radio stats, it's the other way around. So, the following command will give you the stats on the 2.4Ghz radio:

show ap debug radio-stats ap-name someAP radio 1 advanced

I just tried disabling the 5Ghz radio on one of my dual radio APs, and it still responded with "radio 1" as being 2.4Ghz via the above command. I don't have an AP-85 to test this on, but I can't imagine that it would differ that much.

Simple way to check, assuming that you do have 5Ghz disabled, is run the "show ap arm history" command. This will show you which radio is enabled and the channel it is on. For example:

(Aruba3200) #show ap arm history ap-name "AP 2"

Interface :wifi0
Interface :wifi1
ARM History
-----------
Time of Change Old Channel New Channel Old Power New Power Reason
-------------- ----------- ----------- --------- --------- ------
2011-10-30 14:25:51 1 6 24 24 E
2011-10-16 10:11:42 11 1 24 24 E
2011-10-13 10:02:23 1 11 24 24 E

This is how mine looked after I disabled 5Ghz. As you can see above, wifi1, aka radio1, is still 2.4Ghz.

I also ran the ap debug radio-stats command to verify that radio 1 is still 2.4Ghz, as it is still seeing busy times:

(Aruba3200) #show ap debug radio-stats ap-name "AP 2" radio 1 advanced | include Busy
Channel Busy 1s 32
Channel Busy 4s 17
Channel Busy 64s 15
Ch Busy perct @ beacon intvl 34 35 37 39 41 35 23 36 37 34 33 35 34 25 29 30 33 33 31 34 35 29 15 37 42 37 37 38 32 18

(Aruba3200) #show ap debug radio-stats ap-name "AP 2" radio 0 advanced | include Busy
Channel Busy 1s 0
Channel Busy 4s 0
Channel Busy 64s 0
Ch Busy perct @ beacon intvl 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Let me know if this helps clear things up. It is very confusing as to why radio 0 and radio 1 labeled on the box do not reflect what you see on the controller.

Zach




^^^^^^^^^Is my point.


Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

New Contributor
Posts: 4
Registered: ‎10-23-2011

Re: AP-85 2.4 GHz Radio Issue

The AP-85 must be configured differently. When I turn off the 5 GHz channel and look at WIFI 1 status, all the satis is 0 and WIFI 0 still has numbers.

wifi0: 62 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0
wifi1: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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