Yesterday I had a complaint that a few clients at a remote office were having poor response times. Their ping response time was around 100-400ms, whereas it's usually it's less than 6ms. I could not see any indication that the bandwidth between their facility and ours was stressed. Not really knowing what to try, I rebooted all of their AP's one at a time. The problem seemed to go away, but I am not sure that rebooting things actually solved it.
This morning, I noticed I was having lag myself. I am the main facility where all of the traffic comes back to the controller. I am in a room with an Extreme switch and a 3825i AP. When I plug into the switch, I am getting 1ms response time. Using wireless I am getting anywhere from 30ms to 100ms. It sometimes jumps to 400ms or so (yuck).
I have tried the following to no avail:
Switching SSID's (my guest network and some other segregated ones)
Changing between 802.11n, 802.11bg, and 802.11ac
Switching radio channels (forced from channel 6 to several others)
Rebooting the AP
Looking through EMS Application Flows looking for abuse
Looking through my Wireless admin console for clues (using Reports)
I don't see anything wrong with the general bandwidth at any point in the connection process. It really seems like the controller is doing something fruity out of the blue. I would love to reboot it. But I waited too long into the morning and I would cause pain to a lot of users if I flipped the switch right now.
Can anything think of something that I can check or quickly reset?
I am using 3825i's (80 of them across my facility) and they are Bridged@Controller for the most part. I am running Software version 10.11.02.0032 on a 5210 controller.
Thanks for any clues or advice!!