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Fiber redundancy is only supported on GPoE+/M with two fiber ports.
When configured for Redundant Mode “no return to primary”, the fiber ports operate as redundant links.
A fault on the primary fiber port F1, will cause a fail over to the secondary fiber port F2 within 50msec.
F1 will become the secondary port once the port has been restored because “no return to primary” has
been selected.
Redundant Fiber
When configured for Redundant Mode “return to primary’, a fault on the primary fiber port F1, will cause
a fail over to the secondary fiber port F2 within 50msec. The switch will return to the primary fiber port
F1 after the fiber link has been restored for 6 seconds.
2.2.3
SW5: MAC Learning - “MAC Learning/Off”
When this DIP-switch is in the “MAC Learning” position (factory default), all ports on the switch will learn
the source MAC address of each received packet and store the address so packets destined for the stored
addresses can be forwarded to the appropriate port on the switch. When the DIP-switch is in the “Off”
position, learning is turned off and all received unicast packets are forwarded to all ports.
2.2.4
SW6: Pause - “Pause Off/On”
Setting the DIP-switch to the Down “Pause Off” position (factory default) configures the switch to advertise
no Pause capability on all ports. Setting this DIP-switch to the Up “On” position configures the switch to
advertise Symmetrical and Asymmetrical Pause capability to all ports.
2.2.5
SW7: Reserved
This DIP-switch is reserved and must be in the Down “Off” position (factory default).
2.2.6
SW8: PSE Reset - “Off/PoE Reset”
The GPoE+/M can be configured to disable (reset) the PoE output power for 2 seconds after a loss of
receive link on any fiber port. This feature is typically used to allow a PD to re-initialize after a failure on
the incoming fiber.
When this DIP-switch is in the Down “Off” position (factory default), PoE output power does not reset
on fiber link loss. When this DIP-switch is in the Up “PoE Reset” position, the switch will disable PoE
output power for 2 seconds following a loss of receive link on any fiber port.
When fiber redundancy is enabled, the loss of fiber link on either F1 or F2 will not cause the PD to be re-
initialized even though the PSE Reset is enabled. The PD will be re-initialized on a loss of receive link
on both fiber ports.
