iES12G User’s Manual
iS5 Communications Inc.
37
The following table describes the labels in this screen.
Label
Description
Redundant
Ring
Mark to enable Ring.
Ring Leader
There should be one and only one Ring Master in a ring. However if
there are two or more switches which set Ring Leader to enable, the
switch with the lowest MAC address will be the actual Ring Leader and
others will be Backup Masters.
1
st
Ring Port
The primary port, when this switch is Ring Leader.
2
nd
Ring Port
The backup port, when this switch is Ring Leader.
Coupling Ring
Mark to enable Coupling Ring. Coupling Ring can be used to divide a
big ring into two smaller rings to avoid effecting all switches when the
network topology changes. This is an efficient method for
connecting two rings.
Coupling Port
Link to Coupling Port of the switch in another ring
.
Coupling Ring
needs four switches to build an active and a backup link.
Set a port as coupling port. The coupled four ports of four switches
will be run in active/backup mode.
Dual Homing
Mark to enable Dual Homing. By selecting Dual Homing mode, the
ring will be connected to normal switches through two RSTP links (ex:
backbone switch). The two links work as active/backup mode, and
connect each ring to the normal switches in RSTP mode.
Click “
Save” to set the configurations.
Note: Setting one switch as a Ring Master and a Coupling Ring at the same time is not recommended due to heavy
load.