WAP581 stucks entire network during startup

[alessandrolovalvo1975]

Dear Community,

I have a strange issue that I never seen before on my career.

My WAP581 freeze entire network of my company during startup.

The switch where clients and the WAP581 are connected is a NETGEAR GS748TS (a stack of 3).

Model is WAP581-E-K9 V01 with Active Firmware Version: 1.0.2.0.

All devices belong on same default vlan.

It is powered on by a 30W power injector directly on ETH 2,5Gb

When the boot phase completely finished all devices come back to able to communicate each other included the WAP581.

I'm quite sure the problem is switch related because I tried to connect the WAP581 at home over a little catalyst 3560 and it works like a charm.

I tried to disable LLDP on switch port but the problem persists and I have no idea what it could be.

Has anyone had the same experience? I can't find anything on the internet about this.

Thanks in advance for any suggestions

Alessandro

[alessandrolovalvo1975]

UPDATE:
it could be useful for others: on my NETGEAR I tried to disable "STP" (spanning tree protocol) only on that port.
Now it seems to work correctly even reboot phase....I tried just on time.
Now I have to solve performance issue........captive portal is very slow to respond...sigh!!!!