[c-nsp] c861w wifi problem: reached max retries

[Hegedus Gabor]

Hi all!

I have a problem!

I see this log in my c861W ap:

Apr 10 06:48:42: %DOT11-6-ROAMED: Station 001f.0000.f4ab Roamed to 
001d.70d0.0001
Apr 10 06:48:42: %DOT11-4-MAXRETRIES: Packet to client 001f.3b20.f4ab 
reached max retries, removing the client
Apr 10 06:49:14: %DOT11-6-ROAMED: Station 001f.0000.f4ab Roamed to 
001d.7060.0002
Apr 10 06:59:46: %DOT11-6-ASSOC: Interface Dot11Radio0, Station   
001f.0000.f4ab Reassociated KEY_MGMT[WPAv2]
Apr 10 07:00:23: %DOT11-6-ROAMED: Station 001f.0000.f4ab Roamed to 
001d.70d0.0001
Apr 10 07:00:23: %DOT11-6-DISASSOC: Interface Dot11Radio0, 
Deauthenticating Station 001f.3b20.f4ab 
Apr 10 07:00:23: %DOT11-4-MAXRETRIES: Packet to client 001f.0000.f4ab 
reached max retries, removing the client
Apr 10 07:07:08: %DOT11-6-ASSOC: Interface Dot11Radio0, Station   
001f.0000.f4ab Reassociated KEY_MGMT[WPAv2-CP]
Apr 10 07:07:38: %DOT11-6-DISASSOC: Interface Dot11Radio0, 
Deauthenticating Station 001f.0000.f4ab Reason: Sending station has left 
the BSS
Apr 10 07:31:33: %DOT11-6-ASSOC: Interface Dot11Radio0, Station   
001f.0000.f4ab Reassociated KEY_MGMT[WPAv2-CP]
Apr 10 07:32:03: %DOT11-6-DISASSOC: Interface Dot11Radio0, 
Deauthenticating Station 001f.0000.f4ab Reason: Sending station has left 
the BSS
Apr 10 07:36:59: %DOT11-4-MAXRETRIES: Packet to client 001f.0000.f4ab 
reached max retries, removing the client
Apr 10 07:36:59: Client 001f.0000.f4ab failed: reached maximum retries

What is the problem?

cisco says:
Explanation:    This error message indicates that the access point 
attempts to poll the client a certain number of times, but does not 
receive a response. Therefore, the client is removed from the 
association table. This issue is commonly seen when the client and 
access point are attempting to communicate in a noisy RF environment.

Recommended Action:    To resolve this issue, run a carrier busy test on 
the access point to determine if there is excessive noise in the radio 
channel spectrum. Attempt to alleviate any unwanted noise. For more 
information, refer to the "Performing a Carrier Busy Test" section on 
page 6-26 
<http://www.cisco.com/en/US/docs/wireless/access_point/12.3_7_JA/configuration/guide/s37rf.html#wpxref76047>. 



In Carrier Busy test, there is nothing ostentatious.

software version: (AP801-K9W7-M), Version 12.4(10b)JA3,

I use the 5 devices in WDS,  roaming works,
current wireless channel: 13


Any idea what is the problem?

If I use WDS, do all of the APs in the WDS domain have to use the same 
channel or not?

Thank you for help guys. Gabor

I send you a sample of the configuration:

dot11 ssid test
   vlan 1
   authentication open eap method_clients
   authentication network-eap method_clients
   authentication key-management wpa version 2
   accounting method_clients
!


interface Dot11Radio0
 no ip address
 no ip route-cache
 !
 encryption vlan 1 mode ciphers tkip
 !
 encryption vlan 2 mode ciphers tkip
 !
 ssid test
 !
 ssid test2
 !
 station-role root
 no dot11 extension aironet
!