Link Fault Pass Through Function - KTI Networks KGC-310M-C Installation Manual

3.3 Link Fault Pass Through Function

When the Link Fault Pass Through (LFPT) function is enabled and the media converter detects a link
fault on one port segment, it will force the other port segment link down. It looks like that a link fault
is passed from one port to the other.
The following example illustrates a link fault occurs on the fiber cable (any one cable in a duplex fiber
connection). The link fault is forwarded to both copper link partners finally by LFPT operation of two
media converters.
Both Ethernet devices will also detect a link fault on each Cat.5 connection, although the real fault
occurs on the fiber connection exactly.
The following example illustrates a real link fault occurs on one Cat.5 and the link fault is passed to the
other Cat.5 over two converters and the fiber cable by LFPT operation. Finally, the other link partner
also detects a link fault.
Advantage
The function allows two remote link partners of the media converters detect the link fault finally no
matter where the exact fault occurs. It allows the upper application takes necessary action in case a real
link fault occurs in any cable segment.
Methods to enable the function
The LFPT function can be enabled by:
Hardware setting:
Software setting:
DIP SW6 is set to ON position
Web management ->
Configuration -> System -> [Link fault pass through]
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