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

Zyxel_Melen
Zyxel_Melen Posts: 2,652  Zyxel Employee
Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

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