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5.1.4.2 Pro-Ring
Pro-Ring is one of the most powerful Redundant Ring technology in the world. The
recovery time of Pro-Ring is less than 10 ms over 250 units of connections. It can
reduce unexpected malfunction caused by network topology change. Pro-Ring
technology supports three Ring topologies for network redundancy: Pro-Ring, Coupling
Ring and Dual Homing.
Pro-Ring interface
The following table describes the labels in this screen.
Label
Description
Pro-Ring
Mark to enable Pro-Ring.
Ring Master
There should be one and only one Ring Master in a ring.
However if there are two or more switches which set Ring Master
to enable, the switch with the lowest MAC address will be the
actual Ring Master and others will be Backup Masters.
1
st
Ring Port
The primary port, when this switch is Ring Master.
2
nd
Ring Port
The backup port, when this switch is Ring Master.
Coupling Ring
Mark to enable Coupling Ring. Coupling Ring can be used to
divide a big ring into two smaller rings to avoid effecting all
switches when network topology change. It is a good application
for connecting two Pro-Rings.
Coupling Port
Link to Coupling Port of the switch in another ring. Coupling
Ring need four switch to build an active and a backup link.
Set a port as coupling port. The coupled four ports of four