ORing RGS-P9000 Gigabit Ethernet Switch is a 2-layer modular managed redundant ring Ethernet switch with 4 slots. This Ethernet switch supports O-Ring (recovery time <30ms) and MSTP (RSTP/STP compatible) for Ethernet redundancy, IEEE 1588v2 clock synchronization, SMTP client, and SNTP server protocol. The RGS-P9000 switch also supports the Modbus TCP protocol, DOS/DDOS auto prevention, 10K bytes jumbo frame, HRS/PRP module for redundant network, and LLDP protocol. This switch can be managed and centralized by Open-Vision, web-based interface, Telnet, and console (CLI) configuration. The RGS-P9000 switch operates from -40°C to 85°C temperature range and complies with IEC 61850-3 and IEEE 1613 requirements. This Ethernet switch is ideal for power substation and railway applications.