How do you select and configure industrial Ethernet switches for control networks?

Industrial Ethernet switch selection: managed vs unmanaged (managed required for diagnostics, VLAN, redundancy), port count and type (copper, fiber, combo), speed (100 Mbps for fieldbus, gigabit for backbone), environmental rating (temperature, vibration, EMC), redundancy support (RSTP, MRP, HSR/PRP), and certifications (EtherNet/IP, PROFINET, IEC 61850). Configuration: VLAN setup (separate control and IT traffic), port mirroring (for monitoring), QoS (priority for control traffic), IGMP snooping (manage multicast), and redundancy protocol parameters. Security: disable unused ports, MAC address filtering, port security. Mount in appropriate enclosure, ensure proper power and grounding. Regular firmware updates and configuration backups.