Re: wlan/eth bridge stops working after a while: how to diagnose?

Re: wlan/eth bridge stops working after a while: how to diagnose?

[Alexey Yudichev]

I've got ubuntu 9.10 (hostapd 0.6.9) + compat-wireless-2009-12-11 and
the box is acting as a basic wireless internet router. Driver is ath9k
and server adapter is D-Link DWA-547. All is working fine for 2-3 days
until all of a sudden wireless client (MacBook Pro) stops pinging any
hosts on a local network. The wireless association remains and hostapd
logs are not showing anything unusual. Restarting hostapd or even
networking does not help (although I believe restarting networking
does not work well on ubuntu anyway). Only rebooting the server helps.


What would you advise to check/debug or otherwise what would be the
best approach to diagnose the problem? I don't see anything
interesting in dmesg, messages or daemon.log at this point.

Thanks!

Re: wlan/eth bridge stops working after a while: how to diagnose?

[John Murdoch]

--- On Wed, 27/1/10, Alexey Yudichev <ayudichev@gmail.com> wrote:

> I've got ubuntu 9.10 (hostapd 0.6.9)
> + compat-wireless-2009-12-11 and
> the box is acting as a basic wireless internet router.
> Driver is ath9k
> and server adapter is D-Link DWA-547. All is working fine
> for 2-3 days
> until all of a sudden wireless client (MacBook Pro) stops
> pinging any
> hosts on a local network. The wireless association remains
> and hostapd
> logs are not showing anything unusual. Restarting hostapd
> or even
> networking does not help (although I believe restarting
> networking
> does not work well on ubuntu anyway). Only rebooting the
> server helps.

I've been having the same problems for a long time with two different Mini-PCI cards (AR5416 & AR9160) on Debian 5.0 w/ kernel 2.6.32, with various hostapd and compat-wireless releases (latest combination being hostapd 0.7.1 / compat-wireless 2010-01-26). 

Both cards have similar issues where hostapd permanently stops transmitting beacons from between 10mins to just over 24hrs. There's absolutely nothing in any logs to suggest issues. I can however restart hostapd and the problem is immediately resolved. 
 
> What would you advise to check/debug or otherwise what
> would be the
> best approach to diagnose the problem? I don't see
> anything
> interesting in dmesg, messages or daemon.log at this
> point.

I'm more than willing to collect logs too if pointed in the right direction. 

Regards,

John



      

Re: wlan/eth bridge stops working after a while: how to diagnose?

[Alexey Yudichev]

Yes, I kept my symptoms simpler not to risk confusing more than one
issue but indeed in many cases the client stops seeing the access
point at all. Restarting hostapd fixes the network visibility but most
likely does not fix the actual IP connectivity. Client keeps getting
IP address correctly though so DHCP works.

On Wed, Jan 27, 2010 at 6:39 PM, John Murdoch <weejoker@yahoo.com> wrote:
> --- On Wed, 27/1/10, Alexey Yudichev <ayudichev@gmail.com> wrote:
>
>> I've got ubuntu 9.10 (hostapd 0.6.9)
>> + compat-wireless-2009-12-11 and
>> the box is acting as a basic wireless internet router.
>> Driver is ath9k
>> and server adapter is D-Link DWA-547. All is working fine
>> for 2-3 days
>> until all of a sudden wireless client (MacBook Pro) stops
>> pinging any
>> hosts on a local network. The wireless association remains
>> and hostapd
>> logs are not showing anything unusual. Restarting hostapd
>> or even
>> networking does not help (although I believe restarting
>> networking
>> does not work well on ubuntu anyway). Only rebooting the
>> server helps.
>
> I've been having the same problems for a long time with two different Mini-PCI cards (AR5416 & AR9160) on Debian 5.0 w/ kernel 2.6.32, with various hostapd and compat-wireless releases (latest combination being hostapd 0.7.1 / compat-wireless 2010-01-26).
>
> Both cards have similar issues where hostapd permanently stops transmitting beacons from between 10mins to just over 24hrs. There's absolutely nothing in any logs to suggest issues. I can however restart hostapd and the problem is immediately resolved.
>
>> What would you advise to check/debug or otherwise what
>> would be the
>> best approach to diagnose the problem? I don't see
>> anything
>> interesting in dmesg, messages or daemon.log at this
>> point.
>
> I'm more than willing to collect logs too if pointed in the right direction.
>
> Regards,
>
> John
>
>
>
>
>
>

Re: wlan/eth bridge stops working after a while: how to diagnose?

[Jeffrey Baker]

On Wed, Jan 27, 2010 at 12:37 PM, Alexey Yudichev <ayudichev@gmail.com> wrote:
> Yes, I kept my symptoms simpler not to risk confusing more than one
> issue but indeed in many cases the client stops seeing the access
> point at all. Restarting hostapd fixes the network visibility but most
> likely does not fix the actual IP connectivity. Client keeps getting
> IP address correctly though so DHCP works.

Glad to hear I'm not the only one.  I have the _exact_ same problem on
a Debian/i486 system with ath9k radio and I have tried various
compat-wireless and hostapd trees without getting anywhere.

-jwb