Hi Max,
Here my new configuration:
rf dot11a-radio-profile "homelab-dot11a-radio-profile"
am-scan-profile "homelab-dot11a-radio-profile_amscan_a_ui"
min-channel-bandwidth 80MHz
eirp-min 12
eirp-max 32
After that i run "airmatch runnow full" to recalculated an push the new vallues to the APs manually.
Here you can see the AP is changed from 15dBm to 16dBm (this a calculate value between 12 and 32 dBm)
(mm01) [mynode] #show airmatch debug history ap-name HomeLAB-AP01
5GHz radio mac d0:15:a6:bc:d8:f0 ap name HomeLAB-AP01
------------------------------------------------------------------------------------------------------------
Time of Change Chan Bandwidth EIRP(dBm) Mode Source
------------------- ---------------- ------------ ------------ -------- -----------------------------
2021-12-02 09:35:03 108 ->100 80 ->80 16.0 ->16.0 AP ->AP Solver
2021-12-02 09:25:07 112 ->108 80 ->80 15.0 ->16.0 AP ->AP Solver
2021-12-02 05:00:15 104 ->112 80 ->80 15.0 ->15.0 AP ->AP Solver
2021-11-28 05:01:05 112 ->104 80 ->80 15.0 ->15.0 AP ->AP Solver
(HomeLAB-MC02) [MDC] *#show ap active
Name Group IP Address AP Type Flags Uptime Outer IP Cluster Role Radio 0 Band Ch/EIRP/MaxEIRP/Clients Radio 1 Band Ch/EIRP/MaxEIRP/Clients Radio 2 Band Ch/EIRP/MaxEIRP/Clients
HomeLAB-AP01 HomeLAB 172.16.200.100 505 p2a 5d:14h:42m:47s N/A A/U AP:5GHz-HE:100E/
16.0/26.7/4
HomeLAB-AP02 HomeLAB 172.16.200.116 505 2a 11d:12h:55m:53s N/A A/U AP:5GHz-HE:108E/
16.0/26.7/2
\
Here the new 802.11 beacon frame capture, where you see the same EIRP value.
What you say about the MaxEIRP 26.7dBm limit a agree with you. Looks like al little strange and should be 1000mW/30dBM EIRP i this band i think. Maybe it's a bug or i not understand it either :). The AP-505 has internal 5.7dBi antennas following the datasheet.
So the max radio tx-power should be 30dBm minus 5.7dBi = 24,3 dBm + some cable and connector loss. So i could be the MaxEIRP is wrongly noted and the value seems like radio tx-power and not EIRP. Think this is a bug and all other values are OK.
@Onno Any clarification for this MaxEIRP value? Noted i use AP-505 on ArubaOS 8.9.0.0 which a very new version and could have some bugs.
An AP with external antennas you need the configure the antenna gain in the controller. If you don't, iam not sure but i think the ap dont come online.
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Marcel Koedijk | MVP Guru 2021 | ACEP | ACMP | ACCP | ACDP | Ekahau ECSE | Not an HPE Employee | Opionions are my own
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Original Message:
Sent: Dec 02, 2021 02:46 AM
From: Alex Vrabie
Subject: Tx/EIRP reporting on AP 515
First of all, thank you for the trouble! Your point is partially proven from the attached info, but there are still some loose ends:
1. Your AP is coincidentally emitting on maximum user set EIRP (15dBm), so there still might be a chance the TPC reported value is the max limit; Could you move your upper EIRP limit to a higher value, so that the 2 values have a chance of being different?
2. Why is the Max EIRP 26.7 dBm in "show ap active" command? Shouldn't it be 30 dBm for U-NII-2c band in ETSI (NL)?
3. I can see that EIRP is properly referred to as "EIRP" in the shell. You wrote earlier that "in Aruba, all Tx-Power settings are in EIRP". Does that only apply to the GUI settings and beacon advertisements?
4. How does this reference system work with external antenna AP's? For it to make sense, I suppose you'll first have to declare the antenna gains, but what if you forget or are not aware? Are there any default entered values, like with Cisco or other vendors?
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Alex Vrabie
Original Message:
Sent: Dec 01, 2021 07:44 PM
From: marcel koedijk
Subject: Tx/EIRP reporting on AP 515
Hi Alex,
I did a quick test for you, the TPC value in the 802.11 beacon frame is the same as the EIRP in my Aruba Controller.
In my controller configuration below you can see the min. 12dBm and max. 15dBm settings. The Aruba Airmatch feature on the Mobility Conductor collects 24x7 information from the access points and calculate the best EIRP value between 12 and 15 dBm EIRP. The new value is pushed out to the AP's everyday (Default) on 05:00am hour.
rf dot11a-radio-profile "homelab-dot11a-radio-profile"
min-channel-bandwidth 80MHz
eirp-min 12
eirp-max 15
Hope this helps you!
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Marcel Koedijk | MVP Guru 2021 | ACEP | ACMP | ACCP | ACDP | Ekahau ECSE | Not an HPE Employee | Opionions are my own
Original Message:
Sent: Dec 01, 2021 10:30 AM
From: Alex Vrabie
Subject: Tx/EIRP reporting on AP 515
I am perfectly aware of that latest all-inclusive regulatory domain allocation table (gathered by K. Parsons), its interpretation and the whereabouts of my surveyed location. I am just new to Aruba wi-fi :p
I was only wondering, without having access to the controller, what is the setting method of that 18dBm EIRP limit. Now I get it, there's a user defined range.
Regarding TPC current settings advertised in the beacons, do you know if that reported value is in fact the current setting or just the max user set limit?
Because I have reasons to suspect it's not reporting the actual operating Tx-Power.
Thank you
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Alex Vrabie
Original Message:
Sent: Nov 30, 2021 02:33 PM
From: marcel koedijk
Subject: Tx/EIRP reporting on AP 515
In the Aruba controller all tx-power settings are in EIRP. So i believe it's the same in your PCAP.
MD=Modolva (eastern of europe), so the rules should be the same as EU=Europe.
In europe you can send max. eirp of 30dBm/1000mW in the U-NII-2c band.
Also see the max. EIRP per regulatory domain per country for reference.
Your AP working on 18dBm / 63mW EIRP. On the controller in ARM/Airmatch (radio resource management) decide the set value between a (min. tx-power and max. tx-power) EIRP value, this is configured on the controller.
Hope this helps you!
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Marcel Koedijk | MVP Guru 2021 | ACEP | ACMP | ACCP | ACDP | Ekahau ECSE | Not an HPE Employee | Opionions are my own
Original Message:
Sent: Nov 30, 2021 09:19 AM
From: Alex Vrabie
Subject: Tx/EIRP reporting on AP 515
I am new to Aruba Wireless and have recently surveyed an AP-515 deployment inside a facility. Without granted access to the Controller, I had to rely on my analyzer's measurements and pcaps to find out information about the transmit powers.
Pcap shows there should be 3different sub-band limits, according to local regulatory domain EIRP limitations, but there is also the TPC Report showing "Transmit Power" as 18dBm for UNII-1,2&2e operating AP's and 14dBm for UNII-3 ones.
As the individual integrated antenna has 4.6 dBi gain, according to the specs, this could only mean that AP is reporting its EIRP as Transmit Power. Please correct me if I am wrong!
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Alex Vrabie
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