5500 and 2700 Cisco gear dropping connections?

Started by deanwebb, March 26, 2015, 09:18:48 AM

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deanwebb

March 26, 2015, 09:18:48 AM
Anyone else here seeing Cisco 5500 WLCs and 2700 APs having odd issues dropping user connections? It's a rather frequent problem here.
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

SimonV

#1
March 26, 2015, 09:32:49 AM
Are you using TKIP encryption and Intel NICs by chance? I have had an issue for months where Intel cards would send a malformed TKIP packet because of which the AP dropped all traffic for 60 seconds. Motorola was worse, they halted the entire SSID for 60 seconds  :dance:

Google 'TKIP countermeasures' for that exact issue, the resolution was to update the driver which is always a good idea

deanwebb

#2
March 26, 2015, 09:51:31 AM Last Edit: March 26, 2015, 09:55:16 AM by deanwebb
Thanks, Simon. That's what I thought it could be: client driver issue. We'll test that out.
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

Otanx

#3
March 26, 2015, 06:24:49 PM
It is always the client.

-Otanx
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