K-RSTP, DT-Ring, DT-Ring+, DT-Ring-E, Kyland Redundant Ring Technology

Industrial Ethernet switch has been widely used in the fields of electric power distribution network, digital power substation, wind power plant, rail transit, high speed railway, industrial control. And it has been also applied more and more in the areas of important communication and control systems.

Industrial field communication requires for reliable communication, redundancy, and fast recovery.  In some areas, it also requires data bypass flow and isolation, load balance insurance and etc. For these reasons, all kinds of redundancy protocols including STP, RSTP, PVSTP and MSTP appear since 1990’s. However, all these redundancy protocols are designed for commercial networks, and while they are used in industrial Ethernet networks, they have obvious disadvantages on long recovery time and limited supported topology.

Kyland has been devoting itself in developing such kinds of redundancy protocols especially for the field of industrial Ethernet. These protocols include K-RSTP, DT-Ring, DT-Ring+, DT-VLAN and DT-Ring-E, which can ensure the redundant backup, fast recovery time, and load balance for industrial Ethernet switches.

White Pape-Kyland Redundant Ring Technology.pdf