Comnet CNGE2FE8MSPOE Technical Information download pdf (Page 109)

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6.23 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 mode, the software will select the switch

with lowest MAC address number as the ring master. The X-Ring master ring mode can be

enabled by setting the X-Ring configuration interface. Also, the user can identify whether

the switch is the ring master by checking the R.M. LED indicator on the panel of the switch.

The system also supports the Couple Ring that can connect 2 or more X-Ring group for

the redundant backup function; Dual Homing function that can prevent connection lose

between X-Ring group and upper level/core switch.

 Enable Ring: To enable the X-Ring function, tick the checkbox beside the Enable

Ring string label. If this checkbox is not ticked, all the ring functions are unavailable.

 Enable Ring Master: Tick the checkbox to enable this switch to be the ring master.

 1

& 2

Ring Ports: Pull down the selection menu to assign the ports as the

member ports. 1

Ring Port is the working port and 2

Ring Port is the backup

port. When 1

Ring Port fails, the system will automatically upgrade the 2

Ring

Port to be the working port.

 Enable Couple Ring: To enable the couple ring function, tick the checkbox beside the

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Comnet CNGE2FE8MSPOE Technical Information Page 109