Why there's a ring between my AP and firewall?

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Zyxel_Melen
Zyxel_Melen Posts: 1,812  Zyxel Employee
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This is more likely an unmanaged switch between your AP and firewall. Due to the behavior of the unmanaged switch, the LLDP packet will be flooded and cause the devices learned the unexpected LLDP information and lead the Nebula Control Center cannot display a correct topology.

Zyxel Melen