Network topology detection

All Profinet units send LLDP packets for network topology discovery. This information is collected in switches (and other units), and can be queried using the SNMP protocol.

A LLDP frame is sent once per 5 seconds on each Ethernet interface.

Network topology tools

libreNMS: https://www.librenms.org/

Icinga: https://icinga.com

Zabbix: https://www.zabbix.com/

nmap: https://nmap.org/

Net-SNMP: http://www.net-snmp.org/