OSD2251EP Product Details


The OSD2251EP is a 4-port lite managed switch with two Gigabit RJ45 ports and two Gigabit SFP uplink ports which can be used as standard ports or as a redundant fiber ring using OSD’s proprietary ring protocol.  Each RJ45 can provide up to 30W PoE to power a wide range of devices.  Along with higher level features including SNMP, VLAN and IGMP snooping the OSD2251EP is suitable for use in critical networks.  A rugged IP30 casing, fan-less design and wide operating temperature range from -20 to +75ºC make it suitable for use in a wide range of harsh industrial environments.

Features and Benefits

▲ Complies with IEEE802.3i/802.3u/802.3ab
10/100/1000Base-T, IEEE802.3u 100Base-Fx, IEEE802.3z 1000Base-Lx/Sx standards
▲ Has a total of four ports: two fixed copper ports for 10/100/1000Base-T and two SFP ports for the fibre ring or non-ring (100Base-Fx or 1000Base-X)
▲ Ring reconfiguration in the case of cable or switch failures takes less than two milliseconds per hop
▲ MDI/MDIX Crossover: no need for crossover cables
▲ Can be used with either 1 or 2 singlemode or multimode fiber over a variety of link budgets via plug in SFP module (sold separately)
▲ Supports IEEE802.3af/at Alternative A and B cable wiring
▲ Complies with IEEE802.3af/at standard including compliant powered device (PD) signature detection and classification
▲ Provides up to 30W to each RJ45 port. Single and Dual signature PD detection with PoE configuration via DIP switch or GUI
▲ Auto-Negotiation for half or full duplex operation
▲ Powered by non-critical 46 to 57VDC supplies with dual power supply inputs
▲ Integrates with third party NMS system via industry standard SNMP v1, v2c, v3
▲ Supports 10KB jumbo frames
▲ Supports VLAN and IGMP v1, v2, v3 snooping
▲ Remote PoE on/off control and status monitoring
▲ Redundant ring operation is compatible all OSD225* series Gigabit Ethernet switches
▲ Operates over the temperature range of -40 to +75ºC
▲ DIN rail or wall mounting
▲ Available for operation in ring, bus or point-to-point configuration

Product Downloads

Name Description Filetype Filesize
OSD2251EP OMOSD2251EP Operations Manualapplication/pdf2.15M
OSD2251EP DSOSD2251EP Product Data Sheetapplication/pdf213.29K