AP does not have the 802.11bg radio

Anthony Poli — Mon, 05 Jul 2021 16:22:36 GMT

I'm reaching out to see if anyone has encountered this issue.

When issuing the show ap auto-rf 802.11b apname01 CLI command, the message in the subject is returned. This only occurs on 2802i and e APs in this customers deployment. All other AP models in their deployment return details as expected. Oddly, on these same 2802 Aps, issuing show ap auto-rf 802.11a apname01 returns normal output. The issue only appears to be present on the 2.4 radio.

At first I suspected the use of a 3rd-party external antenna type on the E models, but I am seeing the same output on I model as well, which rules that out. It is specific to 2802 only.

Code version is 8.3.143.0, Model is 5508

Appreciate any thoughts on this.

Anthony

Re: AP does not have the 802.11bg radio

Leo Laohoo — Sat, 27 Oct 2018 03:55:17 GMT

@Anthony Poli wrote:

This only occurs on 2802i and e APs in this customers deployment.

So this happening to ALL APs? Please post the complete output to the following commands:

1. WLC: sh sysinfo; and

2. AP: sh version

Re: AP does not have the 802.11bg radio

Mark Holm — Sat, 27 Oct 2018 16:49:02 GMT

Hi Anthony,

The 2802 (and 3802) APs have dual-band (or XOR as it is technically called) radios, which through the use of Flexible Radio Assignment, can convert the 2.4GHz radio to a macro 5 GHz cell. For these APs, the show ap auto-rf 802.11a command will return AP does not have the 802.11bg radio. when issued against a 2802/3802 AP. Instead, simply use show ap auto-rf 802.11-abgn <APName> which will show the state of the radio, regardless of whether it runs in 2.4G or 5G mode. In the output below, the AP is running the default mode of 2.4G.

(WLC2) >show ap auto-rf 802.11-abgn AP2802-1

Number Of Slots.................................. 2
AP Name.......................................... AP2802-1
MAC Address...................................... 00:01:02:03:04:05
Slot ID........................................ 0
Radio Type..................................... RADIO_TYPE_80211abgn
Current TX/RX Band............................. 80211 2.4G band
Sub-band Type.................................. All
Noise Information
    Noise Profile................................ PASSED
Interference Information
    Interference Profile......................... PASSED
    Rogue Histogram (20/40/80/160)
    .............................................
Load Information
    Load Profile................................. PASSED
    Receive Utilization.......................... 0 %
    Transmit Utilization......................... 0 %
    Channel Utilization.......................... 0 %
    Attached Clients............................. 0 clients
Coverage Information
    Coverage Profile............................. PASSED
    Failed Clients............................... 0 clients
Client Signal Strengths
    RSSI -100 dbm................................ 0 clients
    RSSI -92 dbm................................ 0 clients
    RSSI -84 dbm................................ 0 clients
    RSSI -76 dbm................................ 0 clients
    RSSI -68 dbm................................ 0 clients
    RSSI -60 dbm................................ 0 clients
    RSSI -52 dbm................................ 0 clients
Client Signal To Noise Ratios
    SNR    0 dB.................................. 0 clients
    SNR    5 dB.................................. 0 clients
    SNR   10 dB.................................. 0 clients
    SNR   15 dB.................................. 0 clients
    SNR   20 dB.................................. 0 clients
    SNR   25 dB.................................. 0 clients
    SNR   30 dB.................................. 0 clients
    SNR   35 dB.................................. 0 clients
    SNR   40 dB.................................. 0 clients
    SNR   45 dB.................................. 0 clients
Nearby APs
Radar Information
RF Parameter Recommendations
    Power Level.................................. 2
    RTS/CTS Threshold............................ 0
    Fragmentation Threshold...................... 0
    Antenna Pattern.............................. 0

Persistent Interference Devices
Class Type                 Channel DC (%%) RSSI (dBm) Last Update Time
------------------------- ------- ------ ---------- ------------------------
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Re: AP does not have the 802.11bg radio

Anthony Poli — Mon, 29 Oct 2018 13:33:10 GMT

Mark,

Thank you. That is what I was looking for. I was thrown by the fact that the cmd worked for the 8 radio and so I expected it would as well for the 2.4, but that makes sense they have a new one for the XOR.

Thanks again.

Anthony

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