dual counter-rotating ring

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.
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.