ICP DAS USA VERION 1.0 MSM-508FCS - Manual (Page 30)

Industrial Ethernet Layer 2 Managed Switch User Manual
TDRS4050601 23
One Ring Topology
A ring topology ensures the network having one more chance to keep connection alive
when any connection between 2 switches (nodes) has been broken inside the ring.
When we have formed a ring network, the focal point (master) will choose any one and
only one path as Redundant Path. It is actually inactive when the ring network works
properly. At the moment of any connection failure, the focal point will activate the
Redundant Path and fire alarm to output relay.
Managed Switch come with 2 ring pair by default. A ring pair can form a ring with other
network devices as below: