dual counter-rotating ring

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dual counter-rotating ring

A network topology that uses two rings, with transmission in opposite directions in each ring. Designed for fault tolerance and increased speed, if one of the rings breaks, traffic can be rerouted on the other ring. See FDDI and Sebring ring.
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The VSC9129 contains two identical interfaces associated with each direction of a dual counter-rotating ring.
SONET/SDH facilities often provide the most reliable transport since they can be configured based on dual counter-rotating ring topologies.
Fully redundant synchronous optical network architecture -- known as SONET rings -- has at least two counter-rotating rings between any two points on a network.
Several networks have been proposed or implemented which use dual counter-rotating rings.
to transmit data at 100 Mb/s in dual counter-rotating rings between computers in various buildings.
FDDI consists of two counter-rotating rings (for reliability) at 2 fibers per ring (xmt + rcv), hence 4 fibers.
FDDI describes a 100 Mb/s fiber-based network that uses dual counter-rotating rings.
The auto-provisioning router is robust in that it provides a variety of true carrier-class capabilities such as a fully passive backplane, which uses dual counter-rotating rings with self-healing capabilities.
The multiservice routerswitch is robust in that it provides a variety of true carrier-class capabilities such as a fully passive DTM backplane, which uses dual counter-rotating rings with self-healing capabilities.
Because it can access both FDDI dual, counter-rotating rings, the DAS is capable of wrapping the ring in case of a device failure.