EKI-7758F User Manual 128
Figure C.59: IGMP Snooping Table
X-Ring
X-Ring provides a faster redundant recovery than Spanning Tree topology. The action
is similar to 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 master
switch, one of its path 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 will automatically become a working port to recovery the failure.
The switch supports the function and interface for setting the switch as the ring master
or slave mode. 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, then software will
select the switch with lowest MAC address number as the ring master. The X-Ring
master ring mode will be enabled by the X-Ring configuration interface. Also, user can
identify the switch as the ring master from the R.M. LED panel of the LED panel on the
switch.
The system also supports the coupling ring that can connect 2 or more X-Ring group
for the redundant backup function and dual homing function that prevent connection
lose between X-Ring group and upper level/core switch.
• Legacy Mode: To enable the X-Ring function. Marking the check box to enable the
X-Ring function.
• Enable Ring Master: Mark the check box for enabling this machine to be a ring
master.
• 1st & 2nd Ring Ports: Pull down the selection menu to assign two ports as the
member ports. 1st Ring Port is the working port and 2nd Ring Port is the backup port.
When 1st Ring Port fails, the system will automatically upgrade the 2nd Ring Port to
be the working port.
• Enable Coupling Ring: To enable the coupling ring function. Marking the check box
to enable the coupling ring function.
• Coupling port: Assign the member port.
• Control port: Set the switch as the master switch in the coupling ring.
• Enable Dual Homing: Set up one of port on the switch to be the Dual Homing port.
In an X-Ring group, maximum Dual Homing port is one. Dual Homing only work
when the X-Ring function enable.