IP networks in rail vehicles

Usually the network in tramways are different than in buses. There are more IP devices that have to be contected. To make sure that in the event of error such as a cable break a redundant ring topology is required.
Another challenge is to retrofit older vehicles and provide a fitting IP coupling solution.

By using Managed Ethernet Switches that provide redundancy protocols it is possible to combine a ring and star topologies in a tramway. Therefore you can set up a vehicle network that goes through all waggons. In
the event of an failure such as cable break, due to the redundant network the communication is still available.

Reduced risk in the event of failure is a central point for using ring redundancy. Further all waggons can be configured the same way while beeing connected with each other over the higher level network. Therefore
your network is easy to set up and easy to maintenance.

Your benefits

  • Easy to configure network
  • Reduced risk of failure
  • Increased availability of network
  • All IP devices are interconnected
  • Automatic IP address assigning process with DHCP
  • Better diagnosis of network and services

Ring redundant IP networks for tramways

Problem 

Usually the network in tramways are different than in buses. There are more IP devices that have to be contected. To make sure that in the event of error such as a cable break a redundant ring topology is required. Another challenge is to retrofit older vehicles and provide a fitting IP coupling solution.

Solution with Ring topology

By using Managed Ethernet Switches that provide redundancy protocols it is possible to combine a ring and star topologies in a tramway. Therefore you can set up a vehicle network that goes through all waggons. In the event of an failure such as cable break, due to the redundant network the communication is still available.

Your benetifs:

    • reduced risk of failure -> one failure is tolerated
    • increased availability of network
    • all IP devices are interconnected

    Used product: ROQSTAR Managed Switch

    Similar IP addresses in waggons - IP traction

    Problem 

    IP based components such as passenger counting- and passenger information systems are getting more common in tramways. It is usefull to build cluster as subnetworks and make the IP configuration easier. So the requirements are to segment networks and to build subnetworks that have the same IP configuration.

    Solution with Ring topology

    A cost effective way to realize such a network is to use Managed Ethernet Switches. For the communication within a subnetwork a Layer 2 Switch like ROQSTAR Full Managed Switch can be used. To implement the communication between subnetworks a Switch with NAT functionality is needed e.g. ROQSTAR Security.

    Your benetifs:

      • fast start-up and configuration of networks in rail vehicles
      • communication between subnets with same IP address
      • cut costs for IP set up and maintenance

      Used product: ROQSTAR Managed Switch

      Network separation with VLANs


      Problem 

      In public transportation vehicles different network participants must be connected. Those can be cameras for surveillance of the passenger compartment or passenger countig systems and dynamic passenger information systems. Further you‘ll find video recorder systems, LTE router and a central board control unit in buses. Further modern buses provide e-ticket validators. All those devices have to be connected into a common system. At the same time all the different services must be separeted and priortized in the IP network, but how?

      Solution with VLANs and Quality of Service

      With Virtual LANs (VLANs) a physical connected system can be devided into logical groups. To perform the network segmentation a Managed Ethernet Switch is needed such as the ROQSTAR Lite Switch. With VLANs it is possible to segment different IP devices into several separated logical groups. Only devices in the same group are able to communicate with each other.

      Your benetifs:

      • Flexibility with standardized technology IBIS-IP, IPxPT
      • Enables you to use a wide range of passenger services in one network
      • no extra hardware is needed, cost cutting
      • better network and data quality

      Used product: ROQSTAR Lite Managed Switch

      Contact us!

      Your contact person:
      Juri Martinevski
      +49 7121-917 99-11
      E-Mail: sales(AT)tronteq.de