Transition Networks
SISGM
–CHAS L2/L3 Switch User Guide
33625 Rev. B
Page
34
of
234
4.1.2
Redundant Ring Configuration
The SISGM supports three ring topologies:
Ring Master
,
Coupling Ring
, and
Dual Homing
.
Label
Description
Redundant
Ring
Check to enable Redundant Rings topology.
Ring Master
Only one ring master
is allowed in a ring. However, if more than one
switch is set to enable
Ring Master
, the switch with the lowest MAC
address will be the active ring master and the others will be backup
masters.
1st Ring Port
The primary ring port.
2nd Ring Port
The backup ring port.
Coupling Ring
Check to enable
Coupling Ring
.
Coupling Ring
can divide a big ring into
two smaller rings to avoid network topology changes affecting all
switches. It is a good method for connecting two rings.
Coupling Port
Ports for connecting multiple rings (Layer 3 Chassis only). A coupling ring
needs four switches to build an active and a backup link. Links formed by
the coupling ports will run in active/backup mode.
Dual Homing
Check to enable
Dual Homing
. When
Dual Homing
is enabled, the ring
will be connected to normal switches through two RSTP links (ex:
backbone Switch). The two links work in active/backup mode, and
connect each ring to the normal switches in RSTP mode.
Apply
Click to apply the configurations.
Due to heavy computing loading, setting one switch as both Ring Master and Coupling
Ring at the same time is not recommended.