B&B Electronics EIR618-2SFP-T - Manual - Manual (Page 107)

Manual Documentation Number: EIR618-2SFP-T_4812m 107
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IGMP Configuration interface
X-Ring
X-Ring provides a faster redundant recovery than Spanning Tree topology.
The action is similar to STP or RSTP, but the algorithms between them are
not the same.
In the X-Ring topology, every switch should be enabled with X-Ring function
and two ports should be assigned as the member ports in the ring. Only one
switch in the X-Ring group would be set as the master switch that one of its
two member ports would be blocked, called backup port, and another port is
called working port. Other switches in the X-Ring group are called working
switches and their two member ports are called working ports. When the
failure of network connection occurs, the backup port of the master switch
(Ring Master) will automatically become a working port to recover from the
failure.
The switch supports the function and interface for setting the switch as the
ring master or not. The ring master can negotiate and place command to
other switches in the X-Ring group. If there are 2 or more switches in master