5
Link Pass Through Function
LLCF (Link Loss Carry Forward)
When a device connected to the converter and the TP line loss the link,
the converter’s fiber will disconnect the link of transmit, so that the other
ends will know that there is a linkage error on this end. And when the
Fiber line loss the link, the converter’s TP will disconnected, and the
other end will know that there is linkage problem exist.
There is a default LLCF setting on this converter.
The table below shows how LLCF function is working:
Fib e r
C o p p e r
TX RX
Fib e r
C o p p e r
TX RX
RX TX
RX TX
Gig a b it Switc h
Gig a b it Switc h
LINK 1
LINK 2
LINK 3
LINK 4
C a b le 1
C a b le 2
C a b le 3
C a b le 4
C a b le 5
Me d ia
C o nve rte r A
Me d ia
C o nve rte r B
Link Status
Disconnect
Link 1
Link 2
Link 3
Link 4
Cable 1
Off
On
On
On
Cable 2
Off
Off
Off
Off
Cable 3
On
On
On
Off
Cable 4
Off
Off
Off
Off
Cable 5
Off
Off
Off
Off
LLR (Link Loss Return)
When a device connected to the converter and the fiber line loss the link,
the converter’s fiber will disconnect the link of transmit.
There is a switch to enable or disable the function of the media
converter.
The table below shows how LLR function is working:
Media Converter
LLR
Auto-Negotiation
A
ON
OFF
B
OFF
OFF
