Diamond Systems EPS-12002L Compact Layer 2+ and Layer 3 Managed 12+2 Port Ethernet Switch Boards

Vehicle and industrial networks increasingly need fibre uplinks and a dozen copper devices on a switch small enough to fit beside the computer that uses it. The Diamond Systems EPS-12002L series answers that with a family of compact managed Ethernet switch boards that Diamond designed for vehicle and other harsh environments, with latching I/O connectors, a wide DC input and -40 to +85 °C operation.

Every board shares one architecture. Diamond mounts its EPSM-10GX Ethernet switch module on a carrier board that provides power, magnetics and connectors, and fits a heat sink or heat spreader. The result offers 12 10/100/1000 Mbps copper ports for twisted-pair links and two SFP+ sockets that run at 1, 2.5, 5 or 10 Gbps with fibre or copper transceivers, all at non-blocking wire speed. A GUI web interface reaches the switch over any port, and a command language runs on the built-in RS-232 port. The Layer 2+ software covers 8K MAC addresses, 4K IEEE 802.1Q VLANs, jumbo frames, IEEE 802.3ad link aggregation, RSTP and MSTP, and 8 QoS queues per port. Diamond also offers software customisation and customer branding of the GUI and serial interface.

The four builds differ in software and cooling. The EPS-12002L-HSK pairs Layer 2+ software with an integrated heat sink, and the EPS-12002L-HSP uses a heat spreader mounting plate for designs that mount the board to a flat surface. The EPS-12002L-HSK-L3 and EPS-12002L-HSP-L3 run the Layer 3 routing package on the same two cooling options, adding IPv6 L3 static routing, RFC 2328 OSPFv2, RADIUS accounting and port and queue policers. The Layer 3 package also lists IEEE 1588 PTP, which Diamond supports with a minor board modification to fit a precision clock circuit.

Each board takes a 5 to 36 V DC input that suits a range of industrial and vehicle power supplies and operates from -40 to +85 °C. Diamond specifies MIL-STD-202G shock and vibration resistance, and every I/O connector latches to hold its cable under vibration. Diamond names vehicle, industrial and other harsh environment applications for the series, where a small form factor needs gigabit switching with fibre connectivity.