wifi1 not running at manually selected power.

[olof]

I have set my AP's to run at 17dBm power on wifi1.

However, some of them are only running at 14dBm and some at 12dBm.

As you can see from CLI output, ACSP is disabled.

show acsp

Interface Channel select state Primary channel Channel width Power ctrl state Tx power(dbm) Use Last Selection

--------- --------------------- ---------------- ------------- --------------------- ------------- ---------------------

Wifi0 Disable(Link down) Down 20 Disable(Link down) Down Channel:No Power:No

Wifi1 Disable(User disable) 56* 20 Disable(User disable) 12* Channel:No Power:No

Here is a sample output from show interface wifi1 on an AP with 17dBm shown in GUI.

```

show interface wifi1

AC=access category; be=best-effort; bg=background; vi=video; vo=voice;

AIFS=Arbitration Inter-Frame Space; Txoplimit=transmission opportunity limit;

IDP=Intrusion detection and prevention; BGSCAN=background scan; PS=Power save;

HT=High throughput; A-MPDU=Aggregate MAC protocol data unit;

DFS=Dynamic Frequency Selection; CU=Channel Utilization;

EIRP=Effective Isotropic Radiated Power (Transmit Power + Max Antenna Gain + Max TX Chains Gain);

Summary state=Good;

Mode=access; Radio disabled=no;

Admin state=enabled; Operational state=up;

MAC addr=d854:a216:1720; MTU=1500;

Freq(Chan)=5220Mhz(44*); EIRP power=22.77*dBm(12dBm + 6.00dBi + 4.77dBi); Diversity=enabled;

Tx range=300m; Noise floor=-95dBm; Tx power control=disabled;

....

Board limit=21dBm(1) 21dBm(2) 21dBm(3) -(4) ; Regulatory limit=17dBm(1) 14dBm(2) 12dBm(3) -(4) ;

```

and here is sample output from an AP with 12 dBm shown in GUI...

```

show interface wifi1

AC=access category; be=best-effort; bg=background; vi=video; vo=voice;

AIFS=Arbitration Inter-Frame Space; Txoplimit=transmission opportunity limit;

IDP=Intrusion detection and prevention; BGSCAN=background scan; PS=Power save;

HT=High throughput; A-MPDU=Aggregate MAC protocol data unit;

DFS=Dynamic Frequency Selection; CU=Channel Utilization;

EIRP=Effective Isotropic Radiated Power (Transmit Power + Max Antenna Gain + Max TX Chains Gain);

Summary state=High collision;

Mode=access; Radio disabled=no;

Admin state=enabled; Operational state=up;

MAC addr=d854:a216:1ca0; MTU=1500;

Freq(Chan)=5260Mhz(52*); EIRP power=22.77*dBm(12dBm + 6.00dBi + 4.77dBi); Diversity=enabled;

Tx range=300m; Noise floor=-95dBm; Tx power control=disabled;

...

Board limit=21dBm(1) 21dBm(2) 21dBm(3) -(4) ; Regulatory limit=17dBm(1) 14dBm(2) 12dBm(3) -(4) ;

```

[reinhardg]

Why are there 4 values for board limit and regulatory limit? What does that mean?

[bpowers]

Olof,

Look further down the output of the show int wifi1 command for a "Board limit" line. This will show you two things. The max limit of the device AND the max limit of the current channel based on the country code set on the AP. These limits will vary per UNII band per region. For country code 840, I get three different values for three different UNII bands.

========================================================

Host Name : ap1

========================================================

show int wifi1 | I board

========================================================

Board limit= 19dBm(1) 19dBm(2) 19dBm(3) 19dBm(4); Regulatory limit= 24dBm(1) 23dBm(2) 22dBm(3) -(4);

========================================================

========================================================

Host Name : ap2

========================================================

show int wifi1 | I board

========================================================

Board limit= 21dBm(1) 21dBm(2) 21dBm(3) 21dBm(4); Regulatory limit= 23dBm(1) 22dBm(2) 20dBm(3) -(4);

========================================================

========================================================

Host Name : ap3

========================================================

show int wifi1 | I board

========================================================

Board limit= 21dBm(1) 21dBm(2) 21dBm(3) 21dBm(4); Regulatory limit= 19dBm(1) 18dBm(2) 18dBm(3) -(4);

========================================================

So regardless what you try to manually set the power to, the AP will not let you override the predefined settings regulated by your governing body. So they try to keep you legal! 🙂

[olof]

As you can see from screenshot channel 52-64 have low power output. I changed them to channels 100-124 range.

Now they send at 17... Perhaps it has something to do with Norwegian regulatory domain?

[olof]

I am getting the same values from both devices shown as 17 and 12 dBm output power.

All my devices are currently powered by POE injectors.

I didn't have this issue before moving these from one hivemanager to another.

show lldp

LLDP general information

----------------------------

Enabled: yes

Number of LLDP neighbors: 1

Max number of LLDP neighbors: 64

Sending LLDP packets interval (seconds): 30

Sending a holdtime value (seconds): 90

Sending a required power value (watt): 17.0

[samantha_lynn]

This is frequently due to a power imbalance, can you run the command "show lldp" without the quotations and let me know what the output says?