Link Mode Switch Switch Position | Perle Systems S-100-XXXXX

Link Mode (Switch 2)

Switch Position	Mode

Up (default)	Link Pass-Through Mode

Down	Standard Mode

Link Pass-Through:In this mode, the link state on one connection is directly reflected through the media converter to the other connection. If link is lost on one of the connections, then the other link will be brought down by the media converter.

If the installation has a media converter on both ends of the fiber link and both are setup for Link Pass-Through, then a loss of copper link on the far end device will propagate through both media converters and will result in a loss of copper link at the near end device. This would, therefore, resemble a direct copper connection.

Standard Mode: In this mode, the links on the fiber and copper sides can be brought up and down independently of each other. A loss of link on either the fiber ports or copper ports can take place without affecting the other connection.

Far End Fault (Switch 3)

Switch Position	Mode

Up (default)	Enabled

Down	Disabled

Enabled: If the media converter detects a loss of fiber signal on the fiber receiver, it will immediately send a FEF on the fiber link. This, in effect, notifies the fiber link partner that an error condition exists on the fiber connection.

If the remote media converter is set up for Far End Fault (FEF) and the local media converter is set up with Link Pass-Through, a loss of fiber link on either the transmit or receive line will be passed through to the local copper connection thus notifying the connected device.

Fast Ethernet Media Converter – Installation Guide 5