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Real-Time LAN Over WAN

Connecting Separate Real-Time Local Networks over WAN with RTI Connext

⇠ All Case + Code Examples



This use case applies if you are trying to connect multiple real-time local networks together, or if you are trying to connect a real-time local network to other network(s) over a wide area network (WAN). This solution supports use cases where each local area network (LAN) site may be a cluster of many Connext applications distributing large amounts of data that should not be sent across the WAN. This solution also supports use cases where sites are geographically distant from each other, and where bandwidth must be conserved. A few examples of this include:

  • Controlling or monitoring a robot over a WAN
  • Monitoring many pieces of equipment from a remote monitoring station
  • Sending real-time radar information between remote sites
  • Monitoring multiple vehicles over a public network
  • Communicating between an UAV and a ground station

Connext is a high-performance, peer-to-peer middleware that can send real-time data within your LAN, or optionally over a WAN. This is enabled in this example using:

  • RTI Routing Service, which allows you to selectively bridge data between different subsystems. The Routing Service is being used here to send a subset of your local data between local networks on separate DDS domains, or over a wide area network using TCP or UDP transports.
  • Real-Time WAN Transport, which enables Connext applications to directly access wide area networks and traverse NAT routers.
  • RTI Cloud Discovery Service, eases the discovery process for Connext applications on networks (LAN or WAN) that lack a wide-area discovery mechanism such as UDP multicast.

If you need to connect separate real-time networks together over a WAN or LAN, this example offers several configuration options to enable communications.


Bridging over LAN

The first section demonstrates ways of connecting isolated systems over a common LAN network, using RTI Routing Service and UDP or TCP.



Bridging over WAN with TCP

The second section demonstrates how to create a TCP-over-WAN connection to bridge systems with wide physical separation to act as an integrated unit.



Bridging using Real-Time WAN Transport and Cloud Discovery Service

The final section demonstrates how Connext applications can communicate over a WAN (such as the internet) as easily as with a local network.