R310 5G utilization 10-80% "busy" with no clients, all APs on different frequencies

[bogdan_kovachev]

I'm trying to troubleshoot what it looks to me like erroneous reporting from the AP/Smartzone. One of the APs keeps reporting either "high latency" on 5G or "high utilization". Looking at historical graphs by Smartzone it's mostly "busy" type. This happens overnight as well when there are 0 clients on 2.4G and 0 clients on 5G.

Situation:
This is more or less my test network in our office. We are on the last floor of the building and occupy the whole floor. There are no other tenants for 4 floors down. Other buildings are are 30-50m away from ours.

Kit:
We have 3 R310's running firmware 3.6.2.0.695. Controlled by one SZ-100 firmware 3.6.0.222.

Configuration for the "default zone":
Auto Cell Sizing = On
OFDM = On
Management frames = 24Mbps
2.4G Channels = All
5G Channels = All
2.4G Width = 20Mhz
5G Width = 40Mhz
2.4G channels change = Background scanning
5G channel change = Channefly
Background scanning frequency = 10 minutes
Channelfy switch frequency = 100 minutes
Band Balancing = Proactive
Clients on 2.4G = 5%

All other zone settings are default.

When I check with Channelizer or inSSIDer by Metageek I see no suck utilization.

[bogdan_kovachev]

So I've opened up a ticket with support. I took the AP off for about a day. Now I plugged it back on and the issues is gone and I cannot reproduce it.

[bogdan_kovachev]

Not sure if the long power cycle fixed it or what.

[michael_brado]

Power cycle is a great troubleshooting test, glad it appears to have cleared the issue.