PLANET IGTP-80xT Series - Manual (Page 27)

27
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Station
Media
Converter
Switch/Hub
Fiber
Cable
LFP OFF LFP ON
l LED lit = established link ° LED unlit = no link
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Station
Media
Converter
Management
Switch/Hub
TP TP
Broken
Fiber
LFP ON LFP ON
l LED lit = established link ° LED unlit = no link
Port 2 Port 1
Link Loss Carried Forward
Link Loss Returned
Link Loss Carried Forward
If one of the optical conductors is bad (as shown in the diagram box
below), the converter with LLR enabled will return a no-link condition
to its link partner. With LLCF also default enabled, the no-link condition
is carried forward to the switch/hub where a trap is generated to the
management station, and the administrator can then determine the
source of the loss.
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Station
Media
Converter
Switch/Hub
Fiber
Cable
LFP OFF LFP ON
l LED lit = established link ° LED unlit = no link
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Station
Media
Converter
Management
Switch/Hub
TP TP
Broken
Fiber
LFP ON LFP ON
l LED lit = established link ° LED unlit = no link
Port 2 Port 1
Link Loss Carried Forward
Link Loss Returned
Link Loss Carried Forward
Note
The converter is shipped with the default LFP (LLCF/
LLR) function disable. This feature can also be turned on
on-purpose. If you are familiar with the network installa-
tion and for diagnostic purpose (i.e. check which end is
broken), you can turn it on and the converter will take
effect immediately. Otherwise, please remains it in the
default position.