Supports fault Bypass with switchover under 160 ms
Supports QoS for real-time traffic classification and priority
Supports LLDP for automatic topology discovery and visual management
Supports file management, log management, port statistics, 802.1Q VLAN
CRRC standardized ETBN/ECN onboard switch
The CRRC standardized ETBN/ECN onboard switch is a series of standard metro PIS passenger-cabin and driver-cabin switches in a standard 19-inch 3U rack chassis with all interfaces on the front panel for easy cabinet installation and maintenance. Each chassis has two identical-platform switch modules that are independent—removing one does not affect the other. Each switch provides 24 FE D-code + 4 Gigabit X-code ports or 16 FE D-code + 4 Gigabit X-code ports; Gigabit copper supports BYPASS to prevent communication loss on power failure. Power loss during dual-version section upgrade does not affect switch operation.
The CRRC standardized ETBN/ECN onboard switch complies with IEC61375-2-5 and IEC61375-2-3, providing TTDP, TTDB, ECSP and TRDP functions for automatic IP assignment, route/topology learning, train topology confirm/modify and database query.
The cable is connected, but the port will not come UP / the link is down. What should I check?
+What are the PoE power specifications?
+Which ring protocols are supported, and what is the self-healing time?
+How should I choose between Layer-2 and Layer-3 industrial switches?
+Can non-OEM SFP optical modules work normally?
+How do I restore factory settings if I forget the device login password?
+What are the power supply requirements for industrial switches?
+What are the operating temperature range and protection rating of industrial switches?
+The TNM4000 series 28-port general-purpose rack-mount Layer-3 industrial switch is based on next-generation high-performance hardware and MRD's proprietary software platform, supporting rich routing and industrial ring protocols, with 16 Gigabit copper + 8 GE/FE auto-sensing Combo + 4×10G/1G auto-sensing SFP for high-speed data in large industrial networks.
Switch boot time < 1 min
The PAT4000 series homegrown controllable IT-innovation Patriot Layer-3 mining industrial switch is an industrial Ethernet switch independently developed by MRD (Shanghai Boying Communication Technology Co., Ltd.) on domestic CPU, switch chip, PHY, OS and software, delivering security and controllability from PHY to core software, with whole-unit localization rate of 100%.
Supports QoS for real-time traffic classification and priority
Supports LLDP for automatic topology discovery and visual management
The TNM4000 managed Layer-2 industrial switch is designed for harsh-environment networks with 20 Gigabit copper + 4 GE/FE auto-sensing Combo + 2 GE/FE auto-sensing SFP, suitable for large industrial networks.
The SRS2000 series rack-mount Layer-3 industrial switch is based on next-generation high-performance hardware with Layer-3 static routing, supporting 16 GE/FE auto-sensing SFP slots (or copper) + 8 Gigabit Combo + 4×10G optics. High-reliability industrial Ethernet ring with recovery < 50 ms (typical). Designed for harsh industrial environments as a cost-effective solution. Operating temperature -40°C ~ +75°C.
The SRS2000 series rack-mount unmanaged PoE industrial switch supports 2 GE/FE auto-sensing SFP + 24 PoE Gigabit copper for harsh industrial environments as a cost-effective solution. Operating temperature -40°C~ +75°C.
The SRS2000 series rack-mount Layer-3 industrial switch uses 100~240VAC redundant dual power dual-input design, fanless and low-power, rack mounting, rugged aluminum alloy housing, IP30, high-level EMI/EMC tests and strict burn-in meeting industry stability/durability standards.
26-port standard 19-inch 1U rack-mount Layer-2 industrial switch: 20×10/100/1000BaseT + 4×100/1000Base(X/T) Combo + 2×100/1000BaseX SFP (optics not included), 1 CLI, 1 relay, built-in dual 100-240V industrial PSUs. IP40. With CENTAURI software. Specifications are subject to change without notice.
Supports link aggregation
Supports log storage/export on fault or power loss
Supports RTC; clock retained after power loss
PCB with conformal coating
Operating temperature-40 ~85°C
MTBF over 450,000 hours
Industrial-grade switch
CRRC standardized ETBN/ECN onboard switch
IEEE 802.3 CSMA/CD method and physical Layer
specifications CSMA/CD method and physical layer specifications
IEEE 802.1p Priority Queuing Priority Queuing
IEEE 802.1q VLAN tagging VLAN Tagging
IEEE 802.1d Spanning Tree Algorithm Spanning Tree Protocol
IEEE 802.1w Rapid Spanning Tree Rapid Spanning Tree Protocol
IEEE 802.1s Multiple Spanning Tree Multiple Spanning Tree Protocol
IEEE 802.3ab Ethernet over UTP half-duplex links
IEEE 802.3ac VLAN Tagging VLAN Tagging
IEEE 802.1x Authentication Authentication
IEEE 802.3ad Link Aggregation Link Aggregation
IEEE 802.3x Flow Control Flow Control
IEEE 802.3 Ethernet Ethernet
IEEE 802.3u Fast Ethernet Fast Ethernet
IEEE 802.3z Gigabit Ethernet Gigabit Ethernet
IEEE 802 Networks Networks
RFC 768 UDP User Datagram Protocol
RFC 791 IP Internet Protocol
RFC 792 ICMP Internet Control Message Protocol
RFC 793 TCP Transmission Control Protocol
RFC 826 ARP Address Resolution Protocol
RFC 904 Exterior Gateway Protocol Formal Specifica- tion Exterior Gateway Protocol
RFC 1027 Using ARP to Implement Transparent Sub- net Gateways Proxy ARP
RFC 1058 RIP Routing Information Protocol
RFC 1059, 1119 NTPv1/2 Network Time Protocol v1 and v2
RFC 1112 IGMP Host Extensions for IP Multicasting
RFC 1191 Path MTU Discovery Path MTU Discovery
RFC 1256 ICMP Router discovery protocol ICMP Router Discovery Protocol
RFC 1267 A Border Gateway Protocol 3 (BGP-3) Border Gateway Protocol
RFC 1388 RIP Version 2 Carrying Additional Infor- mation Routing Information Protocolv2
RFC 1587 OSPF NSSA OSPF
The TNM4000 rack-mount 28-port Layer-2 industrial switch is widely used in transportation, energy and industrial control. All models share a unified OS for a future-oriented standardized architecture that improves utilization through consistent operations. Beyond stable, reliable, secure high-performance services, it offers flow analysis, policy-based QoS and controllable multicast optimization, with high bandwidth, VLAN support and easy maintenance for large industrial networks.
RFC 1812 Requirements for IP Version 4 Routers Requirements for IP Version 4 Routers
RFC 1994 PPP Challenge Handshake Authentica- tion Protocol (CHAP) Challenge Handshake Authentication Protocol
RFC 2068 HTTP Hypertext Transfer Protocol
RFC 213 DHCP Server DHCP Server
RFC 2139 RADIUS Accounting RADIUS Accounting
RFC 2236 IGMPv2 IGMPv2
RFC 2328 OSPF V2 OSPF v2
RFC 2338 VRRP Virtual Router Redundancy Protocol
RFC 2362 PIM-SM/DM PIM Sparse/Dense Mode
RFC 2370 The OSPF Opaque LSA Option OSPF Opaque LSA Option
RFC 2474 DiffServ Precedence
RFC 2475 DiffServ Core and Edge Router Func- tions
RFC 2597 DiffServ Assured Forwarding
RFC 2598 DiffServ Expedited Forwarding
RFC 2644 Directed Broadcasts Directed Broadcasts
RFC 2865 Remote Authentication Dial in User Ser- vice (RADIUS) Remote Authentication Dial-In User Service
RFC 3046 DHCP Relay Agent Information Option DHCP Relay Agent Information Option
RFC 3222 Forwarding Information Base (FIB) Forwarding Information Base
GMRP GARP Multicast Registration Protocol
GVRP GARP VLAN Registration Protocol
SSH2 Secure Shell 2
IGMP snooping IGMP snooping
SNMPv1/v2c/v3 SNMP
TTDP Train Topology Discovery Protocol
TTDB Train Topology Database Train Topology Database
ECSP ETB Control Service Provider ETB Control Service Provider
TRDP Train Real-time data protocol Train Real-time Data Protocol
Industrial-grade switch
CRRC standardized ETBN/ECN onboard switch
| Backplane bandwidth | 68Gbps |
| Transmission method | store-and-forward |
| MAC address table | 16K |
| Cache | ≥4Mbit |
| Switching rate | 148,800 pps/FE port; 1,488,000 pps/GE port |
| Management Methods | Browser, Serial, STD-17 MIB-II, STD-58 SMIv2, STD-59 RMON, STD-62 SNMPv3， SNMPv2c， SNMPv1， RFC2668 MAU， RFC2925 Ping MIB， MRD Private MIBs ，TELNET |
| Diagnostics | LEDs, log files, relay, RMON, port mirroring, TRAP |
| Redundancy | STP, RSTP, MSTP, link aggregation |
| time synchronization | SNTP |
| Other | 4K VLANS, IPv4/IPv6 multicast, storm control, Supports Jumbo Frame |
| Input voltage | 2U 19-inch rack chassis with 18 slots for MSM modules. Audible/visual alarm and 1 relay alarm (1A@24VDC). Redundant isolated 110-240VAC (50-60Hz) power input. IP20; operating temperature -40°C~+75°C. Accessories (sold separately) description |
| Product dimensions | 441.8mm×132.5mm×230mm |
| protection rating | IP20 |
| MTBF | Over 450,000 hours Temperature Characteristics |
| storage temperature | -40℃ ~ 85℃ |
| operating temperature | -40℃ ~ 85℃ |
| Relative humidity | 5% ~ 95%, non-condensing |
| Vibration/Shock | IEC 61373 |
| free fall | IEC 60068-2-31 |
| PCB | Compliant with IPC standards Industrial-grade switch CRRC standardized ETBN/ECN onboard switch |
| EMC | IEC(EN)61000-4-2, Level 3 IEC(EN)61000-4-4, Level 3 IEC(EN)61000-4-5, Level 3 IEC(EN)61000-4-6, Level 3 IEC(EN)61000-4-8, Level 5 IEC61000-4-29, Class B |
| rail industry | EN 50121； EN50155 |
| High-temperature test | IEC 60068-2-2 |
| Low-temperature test | IEC 60068-2-1 |
| Cyclic damp heat test | IEC 60068-2-30 |
| Insulation test | EN 50155-13.4.9 |
| Withstand voltage test | EN 50155-13.4.9 |
| Power performance tests | EN 50155 |
| Salt spray test | EN 50155 |
| Fire protection and safety | EN45545； EN50153 Industrial-grade switch CRRC standardized ETBN/ECN onboard switch |
| Model | Product Specification |
| TCC4100-CRECNL3 | CRRC standardized 3U rack-mount ETBN/ECN Layer-3 ECNN-A switch: 24 FE D-code + 4 Gigabit X-code with BYPASS; redundant hot-swap dual PSUs; meets CRRC ETBN networking requirements. |
| TCC4100-CRECNL2 | CRRC standardized 3U rack-mount ETBN/ECN Layer-2 ECNN-B switch with dual switch modules; each module has 16 FE D-code + 4 Gigabit X-code with BYPASS; redundant hot-swap dual PSUs; meets CRRC ETBN networking requirements. |
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