Received unexpected DISCOVERY REQ, session tear down

[staticvars]

My Forticloud managed 223C FortiAPs keep failing with this message, "Received unexpected DISCOVERY REQ, session tear down". Sometimes all of them in sequence, which is rather inconvenient. I have been removing things from the network to eliminate possible causes, but there is not much plugged in now. I was originally thinking it might be a chromecast. Fortinet Support has so far been unable to resolve the cause.

8 08-07 17:04 ap (ap-status) FP223C3X3 ap-fail Received unexpected DISCOVERY REQ, session tear down 9 08-07 17:03 ap (ap-status) FP223C3X2 ap-leave N/A 10 08-07 17:03 ap (ap-status) FP223C3X2 ap-fail Received unexpected DISCOVERY REQ, session tear down 11 08-07 17:03 ap (ap-status) FP223C3X1 ap-leave N/A 12 08-07 17:03 ap (ap-status) FP223C3X1 ap-fail Received unexpected DISCOVERY REQ, session tear down

Has anyone seen this before? Should an unexpected discovery request to cause the AP to fail? What might the cause be?

[dlaureys]

I'm seeing the same thing on mine.

Did you ever find out a solution?

[staticvars]

No. I removed all of the old Chromecast devices from the network and only drops once per day, usually at 1AM. 

I was thinking it was related to this:

https://www.theregister.c...romecast_flooding_fix/

[staticvars]

It started happening again. I upgraded firmware to 6.0, but it didn't help.

[paidamouni]

Has anyone find a solution for this?

I am managing FAP 321C through FortiCloud and all my APs fail and drop all connections

[Mgreen4117]

Were you able to resolve this?

[Mgreen4117]

My fix ended up being to increase the packet size and time limit on the firewall for the rule I had programmed.