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PRP Redundancy Without the Complexity or Cost

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PRP Redundancy Without the Complexity or Cost

  1. 1. PRP Redundancy Without the Complexity or Cost www.phoenixdigitalcorp.com
  2. 2. High Availability A wide range of demanding industries, like oil and gas, mining, and water and wastewater treatment require control networks that operate 24/7/365, making high availability of critical importance. The control networks used in these industries require a seamless approach that a REP or typical ring can’t produce. Such networks don’t have the luxury of waiting seconds – or even milliseconds to recover from a fault.
  3. 3. One Approach Parallel Redundancy Protocol (PRP) is one solution people frequently employ in these applications. The protocol requires the creation of two identical LANs, both sending duplicates of the same packet. Whichever packet reaches the device first is accepted, while the second is discarded. The system ensures true redundancy if either LAN experiences a fault. Cost is one of the challenges of employing a PRP solution. Implementing PRP requires the creation of a duplicate LAN, adding considerably to the cost of any network. If the communications modules don’t have PRP built in, it also requires the use of specialized equipment to complete the connections, further adding to both PRP’s cost and complexity.
  4. 4. Another Way But Phoenix Digital-brand industrial Ethernet switches don’t require PRP to provide true network redundancy. Our modules create a redundant, synchronized, dual, counter-rotating network ring topology, compatible with any automation vendor’s control platform. Our system ensures true redundancy by offering two dedicated paths of communications. If there’s a fault anywhere in the system, the network self-heals, allowing the modules to continue communicating with each other. Multiple network-attached components can fail, and a channel fault can occur on one of our modules in the network without interruption of communications. The system truly allows for multiple cascading faults without a loss of service. We employ a PRP-like approach all the way to the edge, delivering a similar level of technology at a greatly reduced cost.
  5. 5. When Milliseconds Count PRP presents other disadvantages, as well. For instance, PRP requires time to compare each packet and decide which to keep and which to discard. This wastes precious milliseconds that could be dedicated toward faster communications in applications where milliseconds count. But our industrial Ethernet switches don’t need to compare packets. Our patented approach results in 0 second convergence time, ensuring a swift, efficient communications network. PRP can be complicated and expensive. On the other hand, our redundant backbone built on Ethernet delivers the results that mission-critical industries demand with lower costs and less complexity.
  6. 6. Multiple Layers If you are required to use PRP for whatever reason, Phoenix Digital has you covered there too. Incorporating Phoenix Digital-brand communication modules into both LANS used in PRP creates additional redundant fault tolerances to your network. Our modules provide each LAN with multiple levels of redundancy to keep your network up and running 24/7, 365 days a year.
  7. 7. Additional Benefits Other benefits of our industrial Ethernet switches include: ▪ Support for multiple protocols all at once ▪ Ethernet/IP, Modbus serial, etc. ▪ Built for industrial use ▪ 120 VAC / 220 VAC / 24 VDC option ▪ Class 1 Div 2 ▪ Fiber eliminates EMI ▪ 10 second boot-up Contact us today to learn more.

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