Perle Systems S-1000MM-XXXXXX manual Fiber Negotiation Switch, Link Mode Switch, Switch Position

Fiber Negotiation (Switch 1)

Switch Position	Mode
Up (default)	Auto
Down	Off

Auto: In this mode of operation the media converter will negotiate fiber parameters on both MM1 and MM2/SM2 (fiber ports). This will ensure the most optimal connection parameters will be in effect. If connecting to another Perle Media Converter, this parameter should be set to Auto.

Off: Fiber negotiation on both fiber ports will be disabled. Fiber Negotiation should only be turned off, if the fiber link partner does not support fiber link negotiations.

Link Mode (Switch 2)

Switch Position	Mode
Up (default)	Smart Link Pass-Through Mode
Down	Standard Mode

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

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

Perle Gigabit Fiber to Fiber Media Installation Guide 4