Wifi keeps dropping.. not sure why, looking for tips/suggestions on debugging this

[justin v]

On Thu, 16 Dec 2010 17:38:54 -0800, Da Rock  
<freebsd-questions at herveybayaustralia.com.au> wrote:

> On 12/17/10 03:46, Justin V. wrote:
>>
>>
>> On Thu, 16 Dec 2010, Mubeesh ali wrote:
>>
>>> can u completely not send any traffic or is this a random drop. If
>>> random there could be interference causing replay counter mismatch.
>>> This may force AP to drop the packet,  the ap may de authenticate
>>> client if it sees continuous stream of such packets in a short
>>> interval and force client to drop existing sessions like ftp.
>>>
>>> Please try changing the channel. If the client and AP are both A
>>> capable please try using the A band as there are more non overlapping
>>> channels and u may be able to find a channel with low interference.
>>>
>>>
>>>
>>> On Thu, Dec 16, 2010 at 10:46 PM, Justin V. <vic at yeaguy.com> wrote:
>>>>
>>>> I keep seeing my wlan0 interface go down..  I suspected a faulty wifi
>>>> router.. i changed that out..
>>>>
>>>> Ive tried using WEP and WPA.  Currently using WPA.
>>>>
>>>> Here are the logs Im seeing..
>>>>
>>>> Dec 16 07:47:57 yeaguy wpa_supplicant[9492]: CTRL-EVENT-DISCONNECTED -
>>>> Disconnect event - remove keys
>>>> Dec 16 07:47:57 yeaguy kernel: wlan0: link state changed to DOWN
>>>> Dec 16 07:47:57 yeaguy wpa_supplicant[9492]: CTRL-EVENT-SCAN-RESULTS
>>>> Dec 16 07:47:57 yeaguy wpa_supplicant[9492]: Trying to associate with
>>>> 00:22:6b:66:bf:74 (SSID='vicnet' freq=2462 MHz)
>>>> Dec 16 07:48:07 yeaguy wpa_supplicant[9492]: Authentication with
>>>> 00:22:6b:66:bf:74 timed out.
>>>> Dec 16 07:48:07 yeaguy wpa_supplicant[9492]: CTRL-EVENT-SCAN-RESULTS
>>>> Dec 16 07:48:07 yeaguy wpa_supplicant[9492]: Trying to associate with
>>>> 00:22:6b:66:bf:74 (SSID='vicnet' freq=2462 MHz)
>>>> Dec 16 07:48:18 yeaguy wpa_supplicant[9492]: Authentication with
>>>> 00:22:6b:66:bf:74 timed out.
>>>> Dec 16 07:48:20 yeaguy wpa_supplicant[9492]: CTRL-EVENT-SCAN-RESULTS
>>>> Dec 16 07:48:20 yeaguy wpa_supplicant[9492]: Trying to associate with
>>>> 00:22:6b:66:bf:74 (SSID='vicnet' freq=2462 MHz)
>>>> Dec 16 07:48:20 yeaguy wpa_supplicant[9492]: WPA: EAPOL-Key Replay  
>>>> Counter
>>>> did not increase - dropping packet
>>>> Dec 16 07:48:20 yeaguy wpa_supplicant[9492]: Associated with
>>>> 00:22:6b:66:bf:74
>>>> Dec 16 07:48:20 yeaguy kernel: wlan0: link state changed to UP
>>>>
>>>> Given the errors seen what would be the best debug to use??
>>>>
>>>> wlandebug or tcpdump ??
>>>>
>>>> I went ahead and enabled since my logs are complaining about  
>>>> association and
>>>> authentication..
>>>>
>>>> yeaguy# wlandebug -i wlan0 auth+assoc
>>>> net.wlan.0.debug: 0x0 => 0xc00000<assoc,auth>
>>>> yeaguy#
>>>>
>>>>
>>>> Any tips would be appreciated.. I have an end user continually  
>>>> complaining
>>>> of disconects over FTP..
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> justin v
>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>
>>>
>>>
>>> -- Best  Regards,
>>>
>>> Mubeesh Ali.V.M
>>> _______________________________________________
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>>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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>>> "freebsd-questions-unsubscribe at freebsd.org"
>>>
>>
>>
>>
>> Hi Mubeesh,
>>
>> It seems to be a random drop.. FTP will be humming along and then wlan0  
>> will go down..
>>
>> I have the router set for channel 11...
>>
>> i do not have these types of drops with other wifi capable devices..
>>
>> ex.  WIN laptop, Playstaion 3... etc...
>>
>>
>>
>> rum0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu  
>> 2290
>>         ether 00:1e:e5:a8:bd:5a
>>         media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
>>         status: associated
>> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu  
>> 1500
>>         ether 00:1e:e5:a8:bd:5a
>>         inet 192.168.1.169 netmask 0xffffff00 broadcast 192.168.1.255
>>         media: IEEE 802.11 Wireless Ethernet OFDM/18Mbps mode 11g
>>         status: associated
>>         ssid vicnet channel 11 (2462 MHz 11g) bssid 00:22:6b:66:bf:74
>>         country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
>>         AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 0 bmiss 7 scanvalid  
>> 450
>>         bgscan bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 5
>>         protmode CTS roaming MANUAL
>>
>>
>>
>> Also yesterday, I lost complete connectivity to the router while my WIN  
>> PC was connected and browsing just fine..
>>
>> I had to bounce the interface and reset the default gateway and my  
>> connection restored.
>>
>> I did:
>>
>> /etc/rc.d/netif restart && /etc/rc.d/routing restart
>>
>>
>> Thanks,
>>
>> Justin
> What version FreeBSD are you using? The only workaround I know is kill  
> wpa_supplicant and run again- been happening to me for ages. But 8.1 it  
> _finally_ sorted it out :)
>
>
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wifi is bugging out on this server.  unable to serve.