High speed redundancy networks have become a key issue when building industrial Ethernet networks. Traditional mesh-type topologies and STP/RSTP redundant protocols do not provide a recovery time low enough for industrial applications, and come with a much higher cost for cabling and installation. Therefore, more and more industrial switch manufactures now provide high-speed recovery times and redundant ring switches as the best solution for industrial Ethernet infrastructures. Moxa's new generation of Turbo Ring technology offers a significant reduction in recovery time—20 ms at a 250-switch load—to ensure fast and constant network connections for device-level applications.

In this white paper, we first discuss traditional redundant technology, including their network topologies and limitations. Next, we introduce “redundant ring” technology, and point out the advantages that redundant rings have over traditional systems. In closing, we highlight the key features of industrial
Ethernet switches, and show how to select the redundant ring switch that provides your industrial application with the best performance.