ath0 goes down periodically
Emil Mikulic
emil at cs.rmit.edu.au
Sat May 28 19:07:55 PDT 2005
On Sat, May 28, 2005 at 11:08:41AM -0700, Sam Leffler wrote:
> I thought you had a machine using the ath driver and acting as an ap.
Sorry if I confused the situation:
I have both an AP and a client, both with the same kind of ath card,
both running FreeBSD.
> when the machine acting as an ap stops working can you see still
> see beacon frames being transmitted?
>
> To do this you need to have another machine. If the other machine is a
> client to the ap and using an ath card then 80211stats should show the
> count of beacon frames processed growing. Otherwise you can use tcpdump
> on the other machine to see beacon frames using something like:
>
> tcpdump -i ath0 -y IEEE802_11
Got it. Thanks. Next time it happens, I'll do what you said.
> If your problem is that the ap stops broadcasting beacons then all data
> frames will backup behind because normal data frames are queued on a
> different h/w tx queue that will be blocked by the inability to xmit the
> beacon frames.
That sounds like it could be the case, but I can't yet confirm that the
beacons are stuck. I'll get back to you as soon as it happens again.
Thanks for your time, and all the great work you're doing, Sam!
--Emil
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