Wireless Access

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Frequent Contributor I

Clients seem to randomly lose access

Hello,

 

I have some stationary computers that are losing their connection to the AP.   It has the latest firmware on it.


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Guru Elite

Re: Clients seem to randomly lose access

Broadcast filter ARP both suppresses broadcasts and does proxy ARP.  Unwanted Broadcasts decrease performance considerably, especially if you have wired and wireless clients in the same VLAN.


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Occasional Contributor I

Re: Clients seem to randomly lose access

If your clients are running Intel 7260 cards, you might take a look at this thread.  It has quite a bit of information about the issues that peopel are seeing with those specific cards.  

 

If it's not that, adding a bit more detail might help diagnose the issue.  What AP's?  What clients?

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Frequent Contributor I

Re: Clients seem to randomly lose access

Hello,

 

I'm going onsite tomorrow to see if I can gather any info.  They are all AP225s.   The workstations are 90% macbooks pro and air.   My guess is no station is more than two years old.  I don't know if the macbooks have any intel nics in them as I usually support PCs.

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Guru Elite

Re: Clients seem to randomly lose access

boe,

 

Recent macbook pros have Broadcom NICs in them, NOT Intel nics.  If you are having problems, you should open up a TAC case in parallel, so that they can give you ideas about what needs to be done prior to your visit.


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Guru Elite

Re: Clients seem to randomly lose access

boe,

 

If you  can ssh into the controller, please post the output of "show ap radio-summary"


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Frequent Contributor I

Re: Clients seem to randomly lose access

Thanks I just Puttied in and that is not an option on my units - there is Show ap, ap-alert, ap-env, app-services, aps.

 

I can do show radio  (not sure if that is close enough)

 

94:b4:0f:c8:87:fc  IAP6# show radio

2.4 GHz:
Legacy Mode:disable
Single Chain Legacy:disable
Beacon Interval:100
802.11d/802.11h:disable
Interference Immunity Level:2
Channel Switch Announcement Count:0
MAX Distance:600
Channel Reuse Type:disable
Channel Reuse Threshold:0
Background Spectrum Monitor:disable
Max Tx Power:0
Min Tx Power:0
5.0 GHz:
Legacy Mode:disable
Single Chain Legacy:disable
Beacon Interval:100
802.11d/802.11h:disable
Interference Immunity Level:2
Channel Switch Announcement Count:0
MAX Distance:600
Channel Reuse Type:disable
Channel Reuse Threshold:0
Background Spectrum Monitor:disable
Standalone Spectrum Band:5ghz-upper
Max Tx Power:0
Min Tx Power:0

 

I do notice the TX power - I think mine are set for 12 to max not sure what this is saying.

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Guru Elite

Re: Clients seem to randomly lose access

try "show ap arm history"


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Frequent Contributor I

Re: Clients seem to randomly lose access

Interface :wifi0
ARM History
-----------
Time of Change       Old Channel  New Channel  Old Power  New Power  Reason
--------------       -----------  -----------  ---------  ---------  ------
2015-10-30 13:55:57  36+          132+         24         24         Q
2015-10-30 13:53:48  100+         36+          24         24         M
2015-10-30 13:47:24  108+         100+         24         24         I
2015-10-30 11:22:51  60+          108+         24         24         I
2015-10-30 11:18:36  36+          60+          24         24         Q
2015-10-30 11:16:33  132+         36+          24         24         I
2015-10-30 10:57:27  36+          132+         24         24         Q
2015-10-30 10:55:20  140+         36+          24         24         M
2015-10-30 06:49:17  36+          140+         24         24         Q
2015-10-30 06:47:10  100+         36+          24         24         M
2015-10-30 06:39:39  140+         100+         24         24         I
2015-10-30 02:59:53  149+         140+         24         24         I
2015-10-30 02:51:59  157+         149+         24         24         M
2015-10-30 01:31:04  157+         157+         Max        24         P-
Interface :wifi1
ARM History
-----------
Time of Change       Old Channel  New Channel  Old Power  New Power  Reason
--------------       -----------  -----------  ---------  ---------  ------
2015-10-30 01:33:36  6            6            15         12         P-
2015-10-30 01:32:37  6            6            18         15         P-
2015-10-30 01:31:57  6            6            21         18         P-
2015-10-30 01:31:46  6            6            24         21         P-
2015-10-30 01:31:05  6            6            Max        24         P-
I: Interference, R: Radar detection, N: Noise exceeded, Q: Bad Channel Quality E: Error threshold exceeded, INV: Invalid Channel, G: Rogue AP Containment, M: Empty Channel, P+: Increase Power, P-: Decrease Power, 40INT: 40MHZ intol detected on 2.4G, NO40INT: 40MHz intol cleared on 2.4G, OFF: Turn off Radio, ON: Turn on Radio

Highlighted
Guru Elite

Re: Clients seem to randomly lose access

It seems like your ARM power is too high.  You need to go into ARM and set the Minimum and max to 9 and 15 respectively.  Click on RF> Advanced and then change the parameters like in the highlighted portion of this screenshot:

iap-arm.png


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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Frequent Contributor I

Re: Clients seem to randomly lose access

Thanks - I had tried that a few days ago but it didn't seem to help so I put it back.  I'll set it back again.

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