Transition Networks SISTM10XX-162-LR - Manual (Page 40)

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RSTP – Per Port Configuration interface
X-Ring
X-Ring provides a faster redundant recovery than Spanning Tree topology. The action is similar with
STP or RSTP, but the algorithms not the same.
In the X-Ring topology, every switch should enable X-Ring function and assign two member ports in
the ring. Only one switch in the X-Ring group would be set as a backup switch that one of two
member ports would be blocking, called backup port, and another port is called working port. Other
switches are called working switches and their two member ports are called working ports. When the
network connection failure, the backup port will automatically become a working port to recovery the
failure.
The switch supports one Dipswitch for setting the switch as the ring master or slave mode. The ring
master has the rights to negotiate and place command to other switches in the X-Ring group. If
there are 2 or more switches are in master mode, then software will select the switch with lowest
MAC address number as the ring master. The X-Ring master ring mode will be enabling by the DIP
Switch. When the switch is set to the master ring mode, the X-Ring configuration interface will
display the switch as the master ring message. Also, user can identify the switch as the ring master
from the R.M. LED panel of the LED panel on the switch.