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EN50155 Switches

The most reliable Ethernet Switch that meets strict EN50155 railroad standard

NRS-2122 Series

  • UTP Port
    UTP Port
  • Optical Port
    Optical Port
  • Management

NRS-2122 is a Gigabit Optical Ethernet Switch that meets EN50155 standard. Fully supported by Optical Bypass and ITU-T standard G.8032 ERPS Ring Protocol to ensure the highest level of network survivability.


item Descriptions
Interface 1(up to 4)-port 10/100/1000Base-T, M12 Connector(8pin, A-Code)
16-ports 10/100Base-TX, M12 Connector(4pin, D-code) including 8 PoE ports
2-ports 1000Base-SX(4Core FC type) with optical bypass
1-port console, M12 Connector(4pin, D-code)
1 Power Input, M23 connector
Dimension(W x D x H) 311.5mm x 178mm x 65.9mm (including bracket)
Weight ≤ 5kg
Operating Voltage DC 100V (40 ~ 160 VDC)
Operating Temperature -40 ~ +75°C
Storage Temperature -40 ~ +85°C
SW Features IEEE 802.1D Bridge
VLAN Translation
MAC, Protocol, IP Subnet based VLAN
VLAN Trunking
GARP VLAN Registration – GVRP
Multiple MAC Registration Protocol – MVRP
Multiple MAC Registration Protocol – MMRP
IEEE 802.1ad Provider Bridge
IEEE 802.1d STP, IEEE 802.1w RSTP, IEEE 802.1s MSTP
G.8032 ERPS ( Ethernet Ring Protection Switching )
Loop Guard
IEEE 802.3ad Link Aggregation
IGMPv2, IGMPv3 Snooping
DHCP Snooping
ARP Inspection
Port Mirroring, Flow Mirroring
DHCP option 82 relay, UPNP
Port Speed/ Duplex Mode/ Flow Control
Port Frame Size ( Jumbo Frame Max. 9.6KB)
Port State ( Administrative Status )
Port Statistics ( MIB Counters )
Port Cable Diagnostics
IEEE 802.1X ( Port-based 802.1X, Single 802.1X, Multiple 802.1X )
MAC based Authentication
RADIUS Accounting
MAC Address Limit
MAC Freeze, MAC Spoofing
IP MAC Binding
WEB & CLI Authentication
ACLs for Filtering/ Policing/ Port Copy
IP Source Guard
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