Aruba Instant & Cloud Wi-Fi

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Occasional Contributor II
Posts: 10
Registered: ‎02-11-2013

Aruba Instant retries problem

[ Edited ]

Hi guys,

 

I have a IAP 105 network running 6.2.0.0-3.2.0.3_37632 Aruba OS and I found an strange behaviour: 

 

retries.png

 

Many of my clients are showing too much retries in/out in the network. There aren´t noise nor interference problems. 

 

Could you help me?

 

Thanks,

Raúl

Contributor I
Posts: 43
Registered: ‎02-01-2013

Re: Aruba Instant retries problem

Hi Raul,

 

Check the switch ports that the AP's are connected to.  I saw a similar problem before and it was due to a speed/duplex mismatch between the AP and the switch port that it was connected to.

MVP
Posts: 4,077
Registered: ‎07-20-2011

Re: Aruba Instant retries problem

 

You should try going to the support tab and running the following commands on that particular AP and the output will give you a better understanding of your RF environment :

 

AP monitor ap table

 

AP arm history

AP arm rf summary

AP arm neighbors 

 

Screen Shot 2013-05-31 at 12.42.34 AM.png

Thank you

Victor Fabian
Lead Mobility Engineer @ Integration Partners
AMFX | ACMX | ACDX | ACCX | CWAP | CWDP | CWNA
Occasional Contributor II
Posts: 10
Registered: ‎02-11-2013

Re: Aruba Instant retries problem

Hi,

 

Thank you, I checked the switch (it´s and old one) and I changed the port and also I tried to connect directly in the DSL router and the result was the same. I should try to change the physical mode from auto to 1000.

 

I´m going to run that commands and I will keep you posted,

 

Regards,

Raúl

Occasional Contributor II
Posts: 10
Registered: ‎02-11-2013

Re: Aruba Instant retries problem

Hi,

 

Here is the output of that ARM commands. I attached it as Office table.

       
       
       
       
*********************************************************************************************************
 5/31/2013 14:22:00 PM    Target: AP_PB_izq    Command: show ap arm rf-summary 
*********************************************************************************************************
       
Channel Summary     
---------------      
channel  retry  phy-err  mac-err  noise  util(Qual)     cov-idx(Total)  intf_idx(Total)
-------  -----  -------  -------  -----  ----------     --------------  --------------- 
36       0      0        0        93     0/0/0/0/95     0/0(0)          0/0//0/0(0)  
40       0      0        0        93     5/0/0/0/95     0/0(0)          0/0//0/0(0)  
44       0      0        0        93     0/0/0/0/100    8/0(8)          0/0//0/0(0)  
48       0      0        0        93     5/0/0/0/95     0/0(0)          0/10//0/0(10)  
52       0      0        0        93     0/0/0/0/94     5/0(5)          29/0//0/0(29)  
56       0      0        0        93     5/0/0/0/95     0/0(0)          0/19//0/0(19)  
60       0      0        0        93     0/0/0/0/94     5/0(5)          28/0//0/0(28)  
64       0      0        0        93     5/0/0/1/95     0/0(0)          0/9//0/0(9)  
100      0      0        0        93     0/0/0/0/94     0/0(0)          28/0//0/0(28)  
104      0      0        0        93     5/0/0/0/95     0/0(0)          0/9//0/0(9)  
108      0      0        0        93     0/0/0/0/95     0/0(0)          0/0//0/0(0)  
112      0      0        0        93     5/0/0/0/95     0/0(0)          0/0//0/0(0)  
116      0      0        0        93     0/0/0/0/95     0/0(0)          0/0//0/0(0)  
120      0      0        0        93     5/0/0/0/95     0/0(0)          0/0//0/0(0)  
124      0      0        0        93     0/0/0/0/95     0/0(0)          0/0//0/0(0)  
128      0      0        0        93     5/0/0/0/95     0/0(0)          0/0//0/0(0)  
132      0      0        0        93     0/0/0/0/95     0/0(0)          0/0//0/0(0)  
136      0      0        0        93     5/0/0/0/95     0/0(0)          0/0//0/0(0)  
140      0      0        0        95     6/0/0/0/94     0/0(0)          0/0//0/0(0)  
1        0      0        0        71     10/6/1/0/50    0/0(0)          0/13//0/0(13)  
6        38     0        0        94     41/26/11/0/62  18/0(18)        70/11//0/0(81) 
11       0      0        0        91     52/49/0/0/97   10/0(10)        65/12//0/0(77) 
       
Columns:util(Qual): ch-util/rx/tx/ext-ch-util/quality  
       
HT Channel Summary     
------------------     
channel_pair  Pairwise_intf_index    
------------  -------------------    
116-120       0      
52-56         48      
100-104       37     
124-128       0      
36-40         0      
60-64         37      
108-112       0      
132-136       0      
44-48         10      
       
Interface Name           :wifi0    
Current ARM Assignment   :44+/24    
Covered channels a/g     :3/0    
Free channels a/g        :15/0    
Last check channel/pwr   :7m:3s/5m:55s   
Last change channel/pwr  :1d:5h:46m:40s/1d:5h:46m:13s  
Next Check channel/pwr   :9s/58s    
Assignment Mode          :Single Band    
       
Interface Name           :wifi1    
Current ARM Assignment   :6/15    
Covered channels a/g     :0/2    
Free channels a/g        :0/1    
ARM Edge State           :disable    
Last check channel/pwr   :2m:37s/5m:50s   
Last change channel/pwr  :1d:5h:44m:13s/1d:5h:44m:6s  
Next Check channel/pwr   :5m:3s/12s    
Assignment Mode          :Single Band    
       
*********************************************************************************************************
 5/31/2013 14:22:00 PM    Target: AP_PB_izq    Command: show ap arm history  
*********************************************************************************************************
       
Interface :wifi0     
ARM History     
-----------      
Time of Change       Old Channel  New Channel  Old Power  New Power  Reason
--------------       -----------  -----------  ---------  ---------  ------  
2013-05-30 06:51:21  44+          44+          Max        24         P-  
Interface :wifi1     
ARM History     
-----------      
Time of Change       Old Channel  New Channel  Old Power  New Power  Reason
--------------       -----------  -----------  ---------  ---------  ------  
2013-05-30 06:53:36  6            6            18         15         P-   
2013-05-30 06:53:30  6            6            24         18         P-   
2013-05-30 06:53:28  1            6            24         24         Q   
2013-05-30 06:51:22  1            1            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
       
*********************************************************************************************************
 5/31/2013 14:22:00 PM    Target: AP_PB_izq    Command: show ap arm neighbors 
*********************************************************************************************************
       
ARM Neighbors     
-------------      
bssid              essid           channel  rssi  tx-power  PL (dB)  AP Flags  Last Update (Total updates)
-----              -----           -------  ----  --------  -------  --------  --------------------------- 
24:de:c6:bf:05:72  WLAN_1E43       6        29    19        101      Passive     
24:de:c6:bf:06:c2  WLAN_1E43       6        27    0         0        Passive     
24:de:c6:bf:06:92  WLAN_1E43       11       21    0         0        Passive     
24:de:c6:bf:02:a2  WLAN_1E43       11       31    0         0        Passive     
24:de:c6:be:fa:d2  WLAN_1E43       11       13    19        102      Passive    
24:de:c6:bf:05:7a  WLAN_1E43       60       27    0         0        Passive     
24:de:c6:bf:06:ca  WLAN_1E43       100      16    24        102      Passive    
24:de:c6:bf:06:9a  WLAN_1E43       100      12    24        116      Passive    
24:de:c6:bf:02:aa  WLAN_1E43       52       29    9         75       Passive     
02:26:f6:90:2b:90  HPB110a.D5E55F  6        5     0         0        Passive     
Neighbor Summary:One hop 10 Two hop 0 Current Time: 2013-05-31 13:22:04 

 

Thanks in advance,

Raúl

MVP
Posts: 4,077
Registered: ‎07-20-2011

Re: Aruba Instant retries problem

 

Looks like this device (possibly a wireless printer near by) might be impacting your connection on channel 6 :

 

02:26:f6:90:2b:90  HPB110a.D5E55F  6        5

 

 

 

Thank you

Victor Fabian
Lead Mobility Engineer @ Integration Partners
AMFX | ACMX | ACDX | ACCX | CWAP | CWDP | CWNA
Occasional Contributor II
Posts: 10
Registered: ‎02-11-2013

Re: Aruba Instant retries problem

Hi,

 

I knew about that printer and I told my customer to deactivate the WiFi connection... but I can´t believe that this printer could be enough to be the reason of too many retries and connection problems. It should be just an interference problem... Nevertheless I´m going to ask again my customer to deactivate that printer

 

Regards,

Raúl

MVP
Posts: 4,077
Registered: ‎07-20-2011

Re: Aruba Instant retries problem

 

From the support tab try running the following:

 

AP Monitor AP Table

 

This command would allow to see which devices are interfering with your IAP

 

Monitored AP Table
------------------
bssid              essid            chan  ap-type      phy-type        dos      dt/mt          ut/it    encr          nstas  avg-rssi  curr-rssi  wmacs  ibss
-----              -----            ----  -------      --------        ---      -----          -----    ----          -----  --------  ---------  -----  ----
00:11:22:33:44:55  Linksys           6    interfering  80211b/g-HT-20  disable  543156/536048  0/0      wpa2-psk-aes  0      6         6          0      no

 

Thank you

Victor Fabian
Lead Mobility Engineer @ Integration Partners
AMFX | ACMX | ACDX | ACCX | CWAP | CWDP | CWNA
Occasional Contributor II
Posts: 10
Registered: ‎02-11-2013

Re: Aruba Instant retries problem

Hi,

 

I don´t see anything wrong...

 

Monitored AP Table

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

bssid              essid      chan  ap-type  phy-type        dos      dt/mt          ut/it  encr          nstas  avg-rssi  curr-rssi  wmacs  ibss

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

24:de:c6:bf:05:72  WLAN_1E43  6     valid    80211b/g-HT-20  disable  433308/141481  3/0    wpa-psk-tkip  1      34        34         5      no

24:de:c6:bf:07:1a  WLAN_1E43  44    valid    80211a-HT-40    disable  433308/433308  0/0    wpa-psk-tkip  1      40        40         16     no

24:de:c6:bf:07:12  WLAN_1E43  11    valid    80211b/g-HT-20  disable  433308/433308  0/0    wpa-psk-tkip  8      25        25         18     no

24:de:c6:bf:06:c2  WLAN_1E43  6     valid    80211b/g-HT-20  disable  433307/141548  3/0    wpa-psk-tkip  1      22        26         9      no

24:de:c6:bf:06:92  WLAN_1E43  6     valid    80211b/g-HT-20  disable  433298/33875   3/0    wpa-psk-tkip  1      22        23         4      no

24:de:c6:bf:02:a2  WLAN_1E43  11    valid    80211b/g-HT-20  disable  433281/304960  0/0    wpa-psk-tkip  34     30        30         18     no

24:de:c6:be:fa:d2  WLAN_1E43  11    valid    80211b/g-HT-20  disable  423247/320912  0/0    wpa-psk-tkip  10     9         9          18     no

24:de:c6:bf:05:7a  WLAN_1E43  60    valid    80211a-HT-40    disable  416715/11591   16/0   wpa-psk-tkip  1      23        23         7      no

24:de:c6:bf:06:ca  WLAN_1E43  100   valid    80211a-HT-40    disable  399178/11110   29/0   wpa-psk-tkip  4      13        13         5      no

24:de:c6:bf:06:9a  WLAN_1E43  100   valid    80211a-HT-40    disable  46209/1309     53/1   wpa-psk-tkip  0      0         12         2      no

Start:0

Length:10

Total:10

 

Any ideas?

 

Thanks in advance!

Guru Elite
Posts: 20,328
Registered: ‎03-29-2007

Re: Aruba Instant retries problem

Is there any way that your clients can use WPA2-PSK-AES?  Full 802.11n speeds are not supported with WPA-PSK-TKIP



Colin Joseph
Aruba Customer Engineering

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