Flooding Laptop MAC

  • 0
  • 2
  • Question
  • Updated 3 days ago
when a specific laptop is turned on all other wireless devices lose their connection but when that laptop is connected to the switch with an ethernet cable the connections are all stable.
typically when the laptop is connected via wireless we (7 other laptops and iPhones, occasionally more devices) all have connections dropped every minute or more.

I have tried updating the drivers on that laptop but they are already up to date, I have tried so many things that have been suggested but nothing seems to be working other than keeping it plugged into the switch constantly which is not an option for us.

the laptop also shows 100% disk usage directly on start-up when nothing else is running. sometimes stopping superfetch and windows search will search will help but not for long and sometimes not at all

I am hoping someone has an idea of what to do here.

Please suggest me which Extreme Controller and AP for avoiding this type of problem????
Photo of Alok Shukla

Alok Shukla

  • 200 Points 100 badge 2x thumb

Posted 5 days ago

  • 0
  • 2
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 47,294 Points 20k badge 2x thumb
Please provide the following information...

- controller and AP model
- controller software version
- model of the laptop
- model of the WLAN adapter in the laptop and driver version
Photo of Andrew Blomley

Andrew Blomley, Employee

  • 652 Points 500 badge 2x thumb
I would look at a remote debug packet capture from the ap in question

This will give you an idea of what the traffic is.

In most cases this is either a drive or hardware issue of the client
Photo of Eric Burke

Eric Burke

  • 3,082 Points 3k badge 2x thumb
Does turning off the networking support on the laptop (disable nic and wireless nic) change the cpu behavior?
Photo of Hakim HAMOUCHE


  • 120 Points 100 badge 2x thumb
Try to disable ipv6 on this laptop
Photo of Alok Shukla

Alok Shukla

  • 200 Points 100 badge 2x thumb
Currently, we are using ruckus, we just want to switch over Extreme if there is any feature available on Controller level to restrict such type of MAC. 
or we can say restrict particular broadcast or multicast packets.

Photo of Andy Holden

Andy Holden, Employee

  • 1,472 Points 1k badge 2x thumb


One comment you said "the laptop also shows 100% disk usage directly on start-up " could be an indication of MALWARE.

Since it is only one laptop, I would suggest you isolate the PC until it can be re-imaged
Photo of Rich Pacheco

Rich Pacheco

  • 964 Points 500 badge 2x thumb
Hi Alok,

I'm not sure if this is the same problem, but we ran in to an issue where a student bridged their wireless interface with another interface (not sure why) and it was triggering spanguard on the AP port.  The AP would disconnect, the laptop would associate with the next closest AP and the same thing would happen.  It took us a while to track down the laptop and even longer to figure out why it was causing it.

Good luck,
-Rich P.