ANTAIRA FCU-2805P-SFP, Руководство пользователя

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If the connection breaks, the FCU-2805P-SFP link loss forwards
to the Switch / Hub and generates a trap to the management
station. The administrator can then determine the source of the
problem.
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Management
Station
Media
Converter
Switch/Hub
w/SNMP
TP TP
Fiber
Cable
LFP ON LFP ON
l LED lit = established link ° LED unlit = no link
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Management
Station
Media
Converter
Switch/Hub
w/SNMP
TP TP
Broken
Fiber
Cable
LFP ON LFP ON
l LED lit = established link ° LED unlit = no link
*Units are shipped with the LFP function disabled (OFF).
Link Loss Return (LLR)
The fiber ports of the FCU-2805P-SFP have been designed with
an LLR function for troubleshooting a remote connection. LLR
works in conjunction with LLCF.
When LFP function is enabled, the port’s transmitter shuts down
when its receiver fails to detect a valid receive link. LLR should
only be enabled on one end of the link and is typically enabled
on either the unmanaged or remote device.
The diagram below shows a typical network configuration with a
good link status using FCU-2805P-SFP for remote connectivity.
Note that LLR and LLCF are enabled as indicated in the diagram.
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