IFS MCR300-1T/1S User Manual 5
Link Fault Pass through (LFP)
The LFP refers to the Link Fault Pass Through function
(LLCF/LLR) and the DIP Switch design. LLCF/LLR can
immediately notify administrators about a problem with the link
media. The DIP Switch enables or disables the LFP function.
LLCF (Link Loss Carry Forward) detects and the connection
loss on the TP line, and LLR (Link Loss Return) detects the
connection loss on the fiber line.
Link Loss Carry Forward (LLCF)
MCR300-1T/1S incorporates an LLCF function for
troubleshooting a remote connection. When the LFP function
is enabled, the FL/TP ports do not transmit a link signal until
they receive a link signal from the opposite port.
The diagram below shows a typical network configuration with
a good link status using MCR300-1T/1S for remote
connectivity.
In case of a connectivity issue, the MCR300-1T/1S media
converter LLCF sends the notification to the switch/hub that
generates a trap to the management station.
