Perle Systems S-1110-XT manual Link Mode Switch, Switch Position Mode

Auto: When enabled, the media converter will negotiate with its link partner to determine the most optimal parameters for this connection. The S-1110-XT will advertise capabilities of 10,100 and 1000 Mbps, full and half duplex as well as pause, and remote fault capabilities to the link partner.

If the copper link partner does not support Auto negotiation, the S-1110-XT will parallel detect to 10 or 100 Mbps and force Half Duplex mode as per IEEE specifications.

Off: When the Auto Negotiation switch is set to the OFF position, the media converter will not negotiate the Ethernet parameters with the copper link partner. The parameters used by the media converter will be determined by the Duplex (switch 4) and Speed (switch 5) DIP switch settings.

.

Link Mode (Switch 2)

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

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

Smart Link Pass-ThroughIn 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 set-up for Smart 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 link at the near end device.

Perle 10/100/1000 Ethernet Extended Temperature Media Converter	5
Installation Guide