Small LLDP Windows Service. For *nix operating system(s) use the excellent lldpd.
Used by network switches to list network devices - https://en.wikipedia.org/wiki/Link_Layer_Discovery_Protocol
Sends LLDP packets to switch. Switch must have LLDP capability. It doesn't query switches' internal LLDP data. Errors are logged to Windows Event Log.
See homepage for more information and download