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Directed Switch Mode Dual Uplink Port
When configured for Directed Switch Mode and Uplink Redundancy (per DIP-
switches 3 and 4), traffic is forwarded to both the primary and secondary uplink
ports. The secondary port will block all traffic while the primary port is active. When
the primary port goes down, the secondary port will be active and all traffic will be
forwarded out the secondary port (F2).
Directed Switch Mode with Uplink Redundancy
Dual Device Mode
When configured for Dual Device Mode, the module is configured as two logically
independent Layer 2 switches. On models with 4 RJ-45 user ports, Port F1 is
associated with ports P1 and P2 and Port F2 is associated with ports P3 and P4.
On models with 8 RJ-45 user ports, Port F1 is associated with ports P1 - P4 and
Port F2 is associated with ports P5 - P8. Data flow will follow MAC address mapping.
Dual Device Mode
When models with 4 RJ-45 user ports are configured for Dual Device Mode and
Directed Switch Mode, the traffic from ports P1 and P2 is only forwarded to uplink
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port F1 and ports P3 and P4 are only forwarded to uplink port F2. When models with
8 RJ-45 user ports are configured for Dual Device Mode and Directed Switch Mode,
the traffic from ports P1 - P4 is only forwarded to uplink port F1 and ports P5 - P8
are only forwarded to uplink port F2. This prevents broadcast traffic from flooding
other network ports. Incoming traffic from F1 and F2 follows MAC address mapping.
Dual Device with Directed Switch Mode
SW3 and SW4: Uplink Redundancy
The modes are described with MAC learning enabled. When MAC learning is
disabled, the module will send data to all ports.
SW3
SW4
Function
LEFT
LEFT
Switch Mode (factory default)
LEFT
RIGHT
Switch Mode (factory default)
RIGHT
LEFT
Redundant Mode - no return to primary (F1)
RIGHT
RIGHT
Redundant Mode - return to primary (F1)
Uplink Redundancy
When configured for Uplink Redundant Mode “no return to primary”, the uplink
ports operate as redundant links. A fault on the primary Port F1, will cause a fail
over to the secondary Port F2 within 50msec. Port F1 will become the secondary
port once the failure condition has been restored because “no return to primary”
has been selected.
Redundant Uplink
When configured for Uplink Redundant Mode “return to primary’, a fault on the
primary Port F1, will cause a fail over to the secondary Port F2 within 50msec.
