User Manual

network detection of the failed link’s activation of the master’s backup link and address

table. If the failed link is restored, the ring slaves will alert the ringmaster to restore

normal operation by disabling the backup link on the network in less than 300ms.

4.4 Coupling Ring Application

Within the network there may be more than one X-Ring group. By using the coupling ring

function, it can connect each X-Ring for redundant backup. It can ensure the transmission

between two ring groups will not fail. The following figure is a sample of a coupling ring

application. The couple ring consists of four switches—switch 1 through switch 4 that are

connected to each other via the paths in red. Please note that the Coupling Ring Backup Path

between switch 1 and switch 3 is blocked; it will work only when the path between switch 2 and

switch 4 is broken or disconnected.

4.5 Dual Homing Application

It provides the connection loss from between X-Ring group and an upper level/core

switch. Assign two ports to be the Dual Homing port that is backup port in the X-Ring

group. The Dual Homing function only works when the X-Ring function is active. Each

X-Ring group only has one Dual Homing port.