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johnk28
join:2007-11-19

johnk28 to jim_p_price7

Member

to jim_p_price7

Re: UBNT Disconnect Issue

said by jim_p_price7:

Saw those same entries in a log file with a P2P link that kept disconnecting. Drove me crazy until I tried WEP instead of WPA. Problem went away, not sure why.

Bingo.

I have seen this same issue in noisy situations.

For me, with WEP, everything was fine. With WPA2, I had random disconnects.
(once a day).

In my case, I had traffic shaping turned on the client.
When I turned it off, it solved the problem. Here is a thread on it:
»forum.ubnt.com/showthrea ··· ?t=63545

So I think what happens is that with WPA and WPA2, there are timeouts
during the connection process. If a response isn't received in X milliseconds,
then the client disconnects.

With a high noise situation, these timeouts may happen with higher probabilty
(since there are more re-transmits happening). Likewise when you turn on
traffic shapping (since it slows down sending of packets).

At least that is my theory. I could be wrong, it wouldn't be the first time.

I consider this a bug. Not sure what Ubiquiti thinks.

John
jim_p_price7
join:2005-10-28
Henryetta, OK

jim_p_price7

Member

said by johnk28:

said by jim_p_price7:

Saw those same entries in a log file with a P2P link that kept disconnecting. Drove me crazy until I tried WEP instead of WPA. Problem went away, not sure why.

Bingo.

I have seen this same issue in noisy situations.

For me, with WEP, everything was fine. With WPA2, I had random disconnects.
(once a day).

In my case, I had traffic shaping turned on the client.
When I turned it off, it solved the problem. Here is a thread on it:
»forum.ubnt.com/showthrea ··· ?t=63545

So I think what happens is that with WPA and WPA2, there are timeouts
during the connection process. If a response isn't received in X milliseconds,
then the client disconnects.

With a high noise situation, these timeouts may happen with higher probabilty
(since there are more re-transmits happening). Likewise when you turn on
traffic shapping (since it slows down sending of packets).

At least that is my theory. I could be wrong, it wouldn't be the first time.

I consider this a bug. Not sure what Ubiquiti thinks.

John

Correct - I too had traffic shaping on the affected link.
jcremin
join:2009-12-22
Siren, WI

jcremin

Member

said by johnk28:

In my case, I had traffic shaping turned on the client.
When I turned it off, it solved the problem. Here is a thread on it:
»forum.ubnt.com/showthrea ··· ?t=63545

said by jim_p_price7:

I too had traffic shaping on the affected link.

The only traffic shaping I'm using is simple queues on a PPPoE concentrator, so nothing on the AP or CPE.