Command of the Day

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Guru Elite
Posts: 20,578
Registered: ‎03-29-2007

COTD: show ap arm history

We all know that adaptive radio management (ARM) will automatically change channel and power to based on a number of factors. The goal is to eliminate reliance on a static channel plan just to deploy access points. It also constantly optimizes your access points for the current environment. The "show ap arm history" command allows you to monitor those changes over time. Running this command will show you an access point's channel and power changes over time, and the reason why those changes took place:

(M3.arubanetworks.com) # show ap arm history ap-name cjoseph-ap125     

Interface :wifi0
ARM History
-----------
Reason Old channel New channel Old Power New Power Last change
------ ----------- ----------- --------- --------- -----------
M 36 48 9 9 30d:6h:44m:46s
Interface :wifi1
ARM History
-----------
Reason Old channel New channel Old Power New Power Last change
------ ----------- ----------- --------- --------- -----------
E 6 11 9 9 57m:2s
E 11 1 9 9 55m:16s
I 1 11 9 9 26m:48s
E 11 6 9 9 25m:42s
E 6 11 9 9 20m:51s
E 11 1 9 9 20m:4s
I 1 11 9 9 16m:0s
I 1 11 9 9 12h:28m:22s
I 11 1 9 9 12h:10m:47s
I 1 11 9 9 11h:52m:33s
I 11 1 9 9 11h:45m:47s
I 1 11 9 9 11h:26m:6s
I 11 1 9 9 11h:21m:48s
I 1 6 9 9 11h:7m:23s
E 6 11 9 9 11h:3m:7s
I 11 1 9 9 10h:24m:51s
I 1 11 9 9 10h:13m:57s
I 11 1 9 9 10h:6m:37s
I 1 11 9 9 10h:0m:35s
I 11 1 9 9 9h:47m:35s
I 1 11 9 9 8h:39m:25s
I 11 1 9 9 8h:25m:3s
I 1 11 9 9 7h:53m:21s
I 11 1 9 9 7h:47m:11s
I 1 11 9 9 6h:34m:46s
I 11 1 9 9 6h:30m:23s
I 1 11 9 9 5h:24m:25s
I 11 1 9 9 5h:11m:48s
I 1 11 9 9 3h:56m:6s
E 11 6 9 9 1h:4m:11s
E 6 11 9 9 59m:31s
E 11 6 9 9 58m:54s
I: Interference, R: Radar detection, N: Noise exceeded, E: Error threshold exceeded, INV: Invalid Channel, G: Rogue AP Containment, M: Empty Channel, P+: Increase Power, P-: Decrease Power, OFF: Turn off Radio, ON: Turn on Radio

(M3.arubanetworks.com) #


Colin Joseph
Aruba Customer Engineering

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

MVP
Posts: 497
Registered: ‎04-03-2007

Chronology

Can you explain why the "Last Change" column was not implemented to be displayed in chronological order?
==========
Ryan Holland, ACDX #1 ACMX #1
The Ohio State University
Guru Elite
Posts: 20,578
Registered: ‎03-29-2007

AP ARM History Not in Correct Order

I believe this has been fixed in ArubaOS 3.4.x and above:

(M3.arubanetworks.com) # show ap arm history ap-name AP61-B

Interface :wifi0
ARM History
-----------
Reason Old channel New channel Old Power New Power Last change
------ ----------- ----------- --------- --------- -----------
P+ 1 1 12 15 6h:59m:0s
P+ 1 1 15 18 6h:51m:49s
P+ 1 1 18 21 6h:45m:36s
P+ 1 1 21 24 6h:40m:1s
P- 1 1 24 21 5h:51m:55s
P- 1 1 21 15 5h:39m:4s
P- 1 1 15 9 5h:33m:37s
P+ 1 1 9 12 5h:21m:19s
P+ 1 1 12 15 5h:15m:39s
P- 1 1 15 9 5h:9m:35s
P+ 1 1 9 12 5h:3m:34s
P- 1 1 12 9 4h:55m:14s
I 1 6 9 9 4h:49m:16s
I 6 1 9 9 3h:56m:35s
I 1 6 9 9 3h:36m:46s
I 6 1 9 9 3h:27m:19s
P+ 1 1 9 12 3h:1m:6s
I 1 6 12 12 2h:59m:47s
P- 6 6 12 9 2h:55m:41s
I 6 11 9 9 1h:46m:38s
P+ 11 11 9 12 1h:45m:19s
I 11 6 12 12 1h:40m:36s
P- 6 6 12 9 1h:37m:43s
P+ 6 6 9 12 1h:28m:13s
I 6 1 12 12 1h:15m:23s
P- 1 1 12 9 1h:14m:35s
P+ 1 1 9 12 52m:1s
P+ 1 1 12 15 44m:25s
P+ 1 1 15 18 38m:59s
P+ 1 1 18 21 32m:8s
P+ 1 1 21 24 24m:51s
I: Interference, R: Radar detection, N: Noise exceeded, E: Error threshold exceeded, INV: Invalid Channel, G: Rogue AP Containment, M: Empty Channel, P+: Increase Power, P-: Decrease Power, OFF: Turn off Radio, ON: Turn on Radio

(M3.arubanetworks.com) #


Colin Joseph
Aruba Customer Engineering

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

Contributor I
Posts: 76
Registered: ‎05-14-2009

Re: COTD: show ap arm history

i found this to be pretty usefull when it comes to troubleshooting. Colin can you explain each field here.

Channel Summary
---------------
channel retry low-speed non-unicast frag bwidth phy-err mac-err noise cov-idx intf_idx
------- ----- --------- ----------- ---- ------ ------- ------- ----- ------- --------
161 0 0 0 0 0 0 0 0 0/0 0/0//0/0
1 0 0 0 0 0 0 0 0 0/0 0/8//0/0
2 0 0 0 0 0 0 0 0 0/0 0/16//0/0
48 0 0 0 0 0 0 0 0 0/0 0/0//0/0
3 0 0 0 0 0 0 0 0 0/0 0/24//0/0
4 0 0 0 0 0 0 0 0 0/0 0/31//0/0
165 0 0 0 0 0 0 0 0 0/0 0/0//0/0
5 0 0 0 0 0 0 0 0 0/0 0/39//0/0
6 0 0 0 0 0 0 0 0 7/0 47/0//0/0
7 0 0 0 0 0 0 0 0 0/0 0/39//0/0
8 0 0 0 0 0 0 0 0 0/0 0/31//0/0
9 0 0 0 0 0 0 0 0 0/0 0/24//0/0
10 0 0 0 0 0 0 0 0 0/0 0/16//0/0
11 7 0 0 0 17 0 0 95 10/0 0/8//0/0
149 0 0 0 0 0 0 0 0 0/0 0/0//0/0
36 0 0 0 0 0 0 0 0 6/0 37/0//0/0
153 0 0 0 0 0 0 0 0 0/0 0/0//0/0
40 0 0 0 0 0 0 0 0 0/0 0/12//0/0
157 0 0 0 0 0 0 0 0 0/0 0/0//0/0
44 0 0 0 0 0 0 0 0 8/0 0/0//0/0
HT Channel Summary
------------------
channel_pair Pairwise_intf_index
------------ -------------------
1-5 47
2-6 63
3-7 63
4-8 62
5-9 63
6-10 63
7-11 47
149-153 0
36-40 49
157-161 0
44-48 0

Interface Name :wifi0
Current ARM Assignment :44/21
Target Coverage Index :10
Covered channels a/g :1/0
Free channels a/g :8/0
ARM Edge State :enable
:8d:4h:16m:55s/5m:11s eup (/) search (n) repeat
Last change channel/pwr :8d:4h:16m:55s/8d:4h:16m:55s
Next Check channel/pwr :0s/2m:9s

Interface Name :wifi1
Current ARM Assignment :11/30
Target Coverage Index :10
Covered channels a/g :0/1
Free channels a/g :0/2
ARM Edge State :enable
Last check channel/pwr :30m:52s/8m:28s
Last change channel/pwr :30m:52s/1d:7h:37m:18s
Next Check channel/pwr :0s/1m:36s
:confused:
Guru Elite
Posts: 20,578
Registered: ‎03-29-2007

ARM RF Summary

Skywalker,

On the Aruba support site, there is a ARM Release Notes Supplement that describes this and a number of other ARM 2.0 concepts in a way that I couldn't. Just click on the documentation tab and enter "supplement" in the search bar and you should be able to find it easily.


Colin Joseph
Aruba Customer Engineering

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

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