Intelligent Ethernet Redundancy for Railway

  • Railway operators are looking for ways to more efficiently allocate resources and serve passenger demands. For example, metropolitan rail services may want to run trains with fewer consists during off-peak hours but longer trains with more consists during rush hour. Railway operators can also serve multiple markets and conserve track assets by connecting multiple consists with different destinations into one train if they will travel along the same route for at least part of the journey.

    Moxa’s ToughNet Ethernet switches feature DRC (Dynamic Ring Coupling), an intelligent Ethernet ring redundancy technology that excels at inter-consist networks. By detecting and automatically reconfiguring the network, DRC reduces configuration time and potential human error, ensuring that the system provides highly reliable and efficient operation, day in and day out , and no interference with intra-consist networks for seamless delivery of onboard passenger services.

    • Inter-consist recovery < 1 s
    • Intra-consist recovery < 20 ms
    • Automated Ring Coupling for Inter-Consist

    Dynamic Ring Coupling (DRC) for Rail Automation

    EN 50155 dynamic ring coupling solutions for railway automation

    Unlike RSTP, Dynamic Ring Coupling does not disrupt intra-consist networks during reorientation. As a result, all the Ethernet network services today’s long-distance railway passengers and operators have come to expect—CCTV surveillance, Wi-Fi access, passenger information systems, public announcement systems, and more—can be seamlessly enjoyed even when coupling switches are rearranged mid-journey.

    Rail automation zero interference in passenger service
  • Optimized Ring Redundancy for
    Inter-Consists

    A number of solutions can be leveraged to provide railway automation networks and multiple-unit Ethernet Consist Networks (ECNs) with redundancy. The most common of these are traditional ring coupling, Rapid Spanning Tree Protocol (RSTP), and Dynamic Ring Coupling. Although each of these has its own drawbacks and benefits, Dynamic Ring Coupling offers a better solution for the unique redundancy requirements of multiple-unit ECNs.

  • Ring Coupling RSTP Dynamic RingCoupling
    Nodes Unlimited  40 Ethernet switches/train  Unlimited 
    Inter-Consist Recovery  < 1 s  3 s  < 1 s 
    Intra-Consist Recovery 20 ms  3 s  20 ms 
    Automatic Configuration
    Consist Network Interference

EN 50155 Solution Products:

Layer 3 Layer 2
Gigabit Ethernet Gigabit Ethernet Fast Ethernet
Managed Managed   Managed Unmanaged
TN-5816A/5818A Series EN 50155 Layer 3 Gigabit Managed Etherent Switch
TN-5816A/5818A Series

EN 50155 16/16+2G-port layer 3 Gigabit managed Ethernet switches

TN-5518A Series EN 50155 Gigabit Managed Etherent Switch
TN-5518A Series

EN 50155 16+2G-port managed Ethernet switches

TN-5510A Series EN 50155 Gigabit Managed Etherent Switch
TN-5510A-2GLSX-ODC Series

EN 50155 L2 managed switches with 8 FE M12+2 GbE fiber Q-ODC ports

TN-5508A/5516A Series EN 50155 Managed Ethernet Switches
TN-5508A/5516A Series

EN 50155 8/16-port managed Ethernet switches

TN-5308 Series EN 50155 Unmanaged Ethernet Switches
TN-5308 Series

EN 50155 8-port unmanaged Ethernet switches

Layer 2
Power-over-Ethernet
Managed Unmanaged
TN-5524-8PoE Series EN 50155 24-port managed Ethernet switches with 8 PoE ports
TN-5524-8PoE Series

EN 50155 24-port managed Ethernet switches with 8 PoE ports

TN-5508A/5516A-8PoE Series EN 50155 Managed Ethernet Switches
TN-5508A/5516A-8PoE Series

EN 50155 8/16-port managed Ethernet switches with 8 IEEE 802.3at/af PoE ports

TN-5308-4/8PoE Series EN 50155 Unmanaged Ethernet Switches
TN-5308-4/8PoE Series

EN 50155 8-port unmanaged Ethernet switches with 4/8 IEEE 802.3af PoE ports



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