Discovery

What it does: ICMP-sweeps a /24, lists live hosts with reverse-DNS names, and auto-adds them to Inventory. Each host also gets a best-guess device-type icon (switch, router, AP, printer, phone, server, camera, PC, laptop, IoT, media player) from its MAC vendor (OUI) plus hostname keywords — the same classification Topology uses.

Safe to run: generally yes, but it's active traffic and can trip noisy-host alerts on monitored networks.

Reading results: each live host shows its IP, DNS name (or — if it has no PTR record), and its device icon. Absence isn't proof a host is down — some devices don't answer ICMP. An icon guess can be wrong for an unrecognized/randomized vendor — it's a hint, not a certainty.