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Contributor II
Posts: 58
Registered: ‎02-23-2015

Access point Poor Quality

Hello,

 

People in this area where the AP at are complaining for poor performance and sometimes drop out. Then I checked the dashboard and I saw this Poor quality. I don't know what it means but it is probably the same reason the clients are experiencing.

 

How can I fix this?

 

poor quality.PNGThanks.

Guru Elite
Posts: 20,789
Registered: ‎03-29-2007

Re: Access point Poor Quality

[ Edited ]

Click on the Help in the upper right hand corner, then click on any heading that you want explained.

 

You have high utilization on an access point and there are few clients, so automatically it lists it as "poor".  If you can get on the commandline, I would call up the "show ap arm state ap-name 058-110b-ap-w1" and see how many access points it can see.  It is quite possible that you have too much coverage.



Colin Joseph
Aruba Customer Engineering

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

Contributor II
Posts: 58
Registered: ‎02-23-2015

Re: Access point Poor Quality

Hi Joseph,

 

Here's the command output.

(cpp-001-aruba-wc1) #show ap arm state ap-name 058-110b-ap-w1

AP:058-110b-ap-w1 MAC:18:64:72:x Channel:149 EIRP:22 Max EIRP:22 Edge:enable
Client Density:0 Valid neighbors: 17 Relevant neighbors: 2 Rx Probe Reports: 9348
Moves(T/S):2/1 Sticky(T/S):2/1 Bandsteer(T/S):0/0 Loadbal(T/S):0/0
Neighbor Data
-------------
Name               	 IP Address     SNR (dB)  Path Loss (dB)  Channel/Pwr  Neighbor Density  Neighbors (R/T)  Relevant
----               	 ----------     --------  --------------  -----------  ----------------  ---------------  --------
058-208b-ap-w1      	 10.111.21.185  10        105             36/21        0                  1/26             
058-310b-ap-w1     	 10.111.21.253  23        91              157/21       0                  3/23             
058-105b-ap-w1     	 10.111.21.154  8         102             157/15       0                  8/18             
058-206b-ap-w1     	 10.111.20.201  9         107             153/21       0                  9/18             
058-201b-ap-w1     	 10.111.21.192  6         108             44/21        0                  2/19             
058-106b-ap-w1      	 10.111.21.130  15        105             40/21        0                  3/21             
00:24:6c:ac:x   	 -              -         -               -            -                 -                -
058-102b-ap-w1     	 10.111.21.149  6         110             157/21       0                  2/17             
058-ap-lobby-w1     	 10.111.21.98   6         110             161/21       0                  1/22             
00:24:6c:ac:x 	 -              -         -               -            -                 -                -
00:24:6c:ac:x  	 -              -         -               -            -                 -                -
00:24:6c:ac:x 	 -              -         -               -            -                 -                -
059-108-01a-ap1-w1  	 10.111.20.138  7         105             48/18        0                  0/5              
00:24:6c:ac:x  	 -              -         -               -            -                 -                -
00:24:6c:ac:x 	 -              -         -               -            -                 -                -
058-116b-ap-w1     	 10.111.20.173  8         109             36/21        0                  2/11             
00:24:6c:ac:x   	 -              -         -               -            -                 -                -
058-313b-ap-w1           10.111.20.175  10        0               11/12        0                  9/19            Yes
057-102b-ap-w1           10.111.20.57   9         101             11/12        0                  9/25             
058-310b-ap-w1           10.111.21.253  33        75              11/12        0                  9/41            Yes
00:24:6c:e6:x        -              -         -               -            -                 -                -
058-106b-ap-w1           10.111.21.130  13        94              1/12         0                  13/24            
058-206b-ap-w1           10.111.20.201  20        95              11/12        0                  12/21            
058-208b-ap-w1           10.111.21.185  20        89              1/15         0                  12/32           Yes
00:24:6c:ac:x        -              -         -               -            -                 -                -
058-305b-ap-w1           10.111.20.185  6         0               11/12        0                  11/20           Yes
057-331b-ap-w1           10.111.20.14   9         99              11/15        0                  10/26            
058-105b-ap-w1           10.111.21.154  10        102             6/12         0                  7/23             
058-205b-ap-w1           10.111.21.2    8         101             11/12        0                  14/26            
00:24:6c:ac:x        -              -         -               -            -                 -                -
00:24:6c:a8:x        -              -         -               -            -                 -                -
058-113b-ap-w1           10.111.21.158  25        0               6/21         0                  3/14            Yes
057-110b-ap-w1           10.111.20.56   6         100             1/15         0                  5/19             
00:24:6c:ac:x        -              -         -               -            -                 -                -
058-130b-ap-w1           10.111.20.49   11        0               6/18         0                  9/27            Yes
058-306b-ap-w1           10.111.21.197  51        0               6/12         0                  8/28            Yes
057-310b-ap-w1           10.111.21.212  9         0               6/18         0                  6/18            Yes
00:24:6c:ac:x        -              -         -               -            -                 -                -
057-ap-lobby-w1          10.111.20.59   3         114             1/18         0                  10/26            
00:24:6c:ac:x        -              -         -               -            -                 -                -
00:24:6c:a8:x        -              -         -               -            -                 -                -
00:24:6c:ac:x        -              -         -               -            -                 -                -
00:24:6c:a9:x        -              -         -               -            -                 -                -
057-205b-ap-w1           10.111.21.254  5         102             11/12        0                  12/30            
111-pool-deck-ap06-w1    10.111.15.8    4         117             11/24        0                  3/14             
058-201b-ap-w1           10.111.21.192  4         105             11/12        0                  10/34            
058-ap-lobby-w1          10.111.21.98   3         100             11/12        0                  11/32            
00:24:6c:ac:x        -              -         -               -            -                 -                -
057-106b-ap-w1           10.111.20.54   4         0               11/12        0                  8/23            Yes
00:24:6c:ac:x        -              -         -               -            -                 -                -
059-108-01a-ap1-w1       10.111.20.138  14        0               6/20.5       0                  2/11            Yes
111-north-patio-ap04-w1  10.111.14.43   26        102             1/12         0                  11/26            
057-136b-ap-w1           10.111.21.92   6         104             11/12        0                  7/28             
058-136b-ap-w1           10.111.21.101  2         104             11/12        0                  15/33            
Legend: R = Relevant, T = Total,  Neighbor Density = (Overlap/Neighbor's Density/ Overlap to local density ratio/ Overlap to neighbor's density ratio)


(cpp-001-aruba-wc1) # 

 

Guru Elite
Posts: 20,789
Registered: ‎03-29-2007

Re: Access point Poor Quality

From the perspective of that access point, it seems like you have very good coverage. I would consider turning down the power by making your max TX power on the g band 12 and the max TX power on the a band to 15. That would require you creating separate radio and arm profiles for each band. First, run that command against any access point where you think you do not have good coverage to see how many other access points can be seen


Colin Joseph
Aruba Customer Engineering

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

Contributor II
Posts: 58
Registered: ‎02-23-2015

Re: Access point Poor Quality

Hi,

 

Yes, I did made those Tx adjustment you suggested to that particular AP. Do you also want me to apply this to other AP? From the list earlier, how will I know which AP needs to be adjusted?

 

Thanks.

Guru Elite
Posts: 20,789
Registered: ‎03-29-2007

Re: Access point Poor Quality

[ Edited ]
The high utilization is coming from the access points around that access point. You could apply those settings to that entire ap-group, and then look at the channel utilization after you do that.


Colin Joseph
Aruba Customer Engineering

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

Contributor II
Posts: 58
Registered: ‎02-23-2015

Re: Access point Poor Quality

[ Edited ]

I think I will observe first before adjusting the entire AP group. It looks it is getting better since lowering maxTx to 12 and minTx to 3 for 2.4ghz and maxTx to 15 and minTx to 3. I hope it stays this way.

getting better.PNG

 

Thanks.

 

 

 

Edit:

 

Nevermind, I checked other AP's in that building and most  seem to have high channel utilization so  I lowered all Tx.  Anyway, are there any more setting I should do in the ARM profile. There are many settings but I don't  if they can help make things better.

Guru Elite
Posts: 20,789
Registered: ‎03-29-2007

Re: Access point Poor Quality

Yes, you would have to lower all access points, because utilization is something shared across all access points.

You can enable "Quality Aware Arm" which would factor in channel utilization when access points choose channels. This is of course very limited in the 2.4ghz spectrum.

I would look at all my access points to see if things have lowered before doing the quality aware change. There are quite a few environments that have higher utilization but they work, so you need to baseline your utilization and user experience to determine what is the functional utilization for your network.

If your users are having problems, we can consider something else...



Colin Joseph
Aruba Customer Engineering

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

Contributor II
Posts: 58
Registered: ‎02-23-2015

Re: Access point Poor Quality

I just enabled Channel Quality Aware Arm.

 

How about Rogue AP Aware? should I leave it unchecked? 

Guru Elite
Posts: 20,789
Registered: ‎03-29-2007

Re: Access point Poor Quality

No, because it will not help your high utilization issue. That setting is rarely enabled in practice. The main setting in the ARM profile that is manipulated is the max and min transmit power like we did before. The other settings are not changed often.


Colin Joseph
Aruba Customer Engineering

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

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