Westermo RedFox Series - Manual (Page 330)

Westermo OS Management Guide
Version 4.17.0-0
15.1.2.2 Multiple instances of Dual-Homing
It is possible to create multiple dual-homing instances on a WeOS switch. Each
instance has its own set of uplinks, referred to as an uplink domain – one of the
uplinks in the domain will be active, while the others are backups. A sample
topology is shown in
fig. 15.7 .
Domain A
Sub−ring Super−ring
Domain B
Uplink
Uplink
Sub−ring Super−ring
(Instance 1)
(Instance 2)
RiCo
RiCo
RiCo
RiCo
FRNT FRNT
FRNT FRNT
Dual
Hom.
Figure 15.7: Possibility to setup multiple uplink domains for dual-homing.
Warning
The upper and lower LANs in fig. 15.7 must not have additional inter-
connections. Otherwise a layer-2 loop would be created via the dual-homing
node, unless the dual-homing node has VLAN barriers between uplinks of
the different instances.
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