PLANET WFT-801 - Manual (Page 13)

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Chapter 9
LINK PASS THROUGH FUNCTION
Link Loss Carry Forward (LLCF)
Smart Media Converter modules incorporate an LLCF function for
troubleshooting a remote connection. When LLCF 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 Smart Media Converter for remote
connectivity. Note that LLCF is enabled on DIP switch.
If the connection breaks, the Smart Media Converter that link
loss forward to the switch/hub which generates a trap to the
management station. The administrator can then determine the
source of the problem.
IMPORTANT: When connecting the Smart Media Converter
with LLCF enabled to an auto-negotiating-ca-
pable device, force both sides of the configu-
ration to 10 or 100Mbps full or half duplex.
This allows the converter to immediately see
link pulses and start passing data.
* Units are shipped with the LLCF function disabled.
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