TRENDnet TFC-1000 - Manuel (Page 11)

LLCF (Link Loss Carry Forward) Diagram
Cable 1
Cable 2
Media
Converter 1
Cable 3
Copper Cable
Fiber Cable
Media
Converter 2 Cable 4
LLCF allows the network administrator to quickly
troubleshoot the network connection based on the LEDs on
the Fiber Converters.
When the TX port link is down, the
converter will force the fiber port link to shutdown. When the fiber
port link is down, the converter will force the TX port link to
shutdown.
Below are examples on how to read the LLCF Function Table:
Example 1: If LLCF is enabled on Fiber Converter 1 and disable
on Media Converter 2, when Cable 1 link is down, Fiber Converter
1's Copper and Fiber LED and Fiber Converter 2's Fiber LED will
shut off. Fiber Converter 2's Copper LED remains on.
Example 2: If LLCF is disabled on both Fiber Converters, when
Cable 4 link is down, Fiber Converter 1's Copper and Fiber LED
and Fiber Converter 2's Fiber LED remains on. Fiber Converter
2's Copper LED will shut off.
LLCF Function
9