User Manual
Instruction Manual
6
Link fault pass-through (LFP)
Link fault pass-through can notify you of link problems and provides an ecient
solution for monitoring your network. The LFP DIP switch is set to OFF by default, and
you can use the DIP switch to enable (ON) or disable (OFF) the LFP function.
If you are familiar with your network infrastructure and proper diagnostic procedures,
you can leave the LFP DIP switch in the OFF position. Otherwise, it is recommended to
set the LFP DIP switch to the downward ON position.
Enable LFP
When the DIP switch is set to ON, LFP is enabled. When a device is connected to
the media converter, and the copper line or ber line drops the link, then the media
converter will disconnect the transmission link on the opposite interface.
• Slide the LFP DIP switch (DIP switch 3) to the downward ON position to enable LFP.
Disable LFP
When the DIP switch is set to OFF, LFP is disabled (default).
• Slide the LFP DIP switch (DIP switch 3) to the upward OFF position to disable LFP.
Troubleshoot
Always check to ensure the duplex setting of the connected ber equipment matches
the duplex setting of the media converter.
Troubleshoot the RJ45 copper UTP link
The RJ45 port supports Gigabit (1000Base-T) network devices and cables only. It does
not support 10/100Mbps copper (RJ45) network devices.
The ET91000SM10 is a transparent media converter (it is not a switch). Therefore,
the duplex setting of your ber network equipment must match that of the media
converter’s RJ45 copper UTP port.
• For example, if your connected ber device is full duplex, set the duplex DIP switch
(DIP switch 1) on the media converter to the upward OFF (FULL) position.
Note: In most copper to ber network infrastructures, your connected devices should
be set to full duplex. In most networks, a copper link won’t be established if you set DIP
switch 1 to the downward ON (half duplex) position.
Always check your ber network equipment to ensure it hasn’t mistakenly been set to
half duplex.