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Beginner

Unclear wireless clients behavior

Hello,

we have WLC 3504 ios 8.8.120.0 + set of AIR-CAP3702I-E-K9

From time to time, clients experience problems connecting to a wireless network. Two identical twin laptops can be a meter away from the access point and on one there will be everything OK and on the other there are communication problems.

Laptops equipped with Intel AC 9560.

Event log for problem laptop attached.

 

 

 

 

 

Everyone's tags (1)
24 REPLIES 24
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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

A metre away from the AP ... a 3702E.
What antenna is the 3702E using?
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Beginner

Re: Unclear wireless clients behavior

Hello @Leo Laohoo  I mentioned 3702I, it has an integrated antenna. 

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

Only these two wireless clients having problems?
What about other wireless clients? They having same problems?
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Beginner

Re: Unclear wireless clients behavior

At one point, a problem can be observed with 1-2 clients, but then go through and not appear at all anywhere. Replacing a wifi adapter may help. Also moving laptop btw AP also may help. 

Can AAA settings affect?

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

And what firmware are the Intel 9560 running on?
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Beginner

Re: Unclear wireless clients behavior

@Leo Laohoo  Intel 21.20.1.1 from 5/30/2019

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

Try the latest driver, 21.50.X.
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Beginner

Re: Unclear wireless clients behavior

@Leo Laohoo 
didn't help

what ERRORS at event log can mean ?

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

Do a "debug client <MAC ADDRESS>" and log it.
What happens, with the debug enabled, and this issue occurs?
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Beginner

Re: Unclear wireless clients behavior

Hello @Leo Laohoo 

 

debug info attached

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

I've had a look and I don't see any issues with this debug.
The debug starts at "12:59:48.549" and by "12:59:48.583" the client got an IP address of "10.84.150.205".

Please expand, with more details, what issue(s) are observe when this happens?  

Do the wireless clients get a yellow "!"?  Did the wireless clients loose wireless network?  Did the wireless clients lost access to a certain DB?

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Beginner

Re: Unclear wireless clients behavior

Hello @Leo Laohoo 

 

Client experience high level packet drops. It can begin as unexpectedly as it ends.

without any kind of OS changes, on the hotspot from the phone at the same time, there are no problems.

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Hall of Fame Community Legend

Re: Unclear wireless clients behavior

Can you replicate the issue (ping drops) with, say, a smart phone?
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Beginner

Re: Unclear wireless clients behavior

Hello @Leo Laohoo 

No,

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