Per-device port utilization summary: total, active, available, connected (a device_link on the port, or a Tier-1 connected_device_name), uplink (a port-to-port device_link) and FDP-linked counts (mig 20260926_030).
active_ports actual_ports available_ports connected_ports device_id device_name device_type_label fdp_linked_ports total_ports uplink_ports