13 / 22 page
IP113A LF
Preliminary Data Sheet
Link fault pass through
When link fault pass through function is enabled, link status on TX port will inform the FX port of the
same device and vice versa. From the link fault pass through procedure illustrates in the figure below, if
link fail happens on IP113A LF’s TX port (1), the local FX port sends non-idle pattern to notice the remote
FX port (2). The remote FX port then forces its TX port to link failed after receiving the non-idle pattern
(4). In other words, this mechanism will alert the link fault status of local TX port to the remote converter’s
TX port, and the link status of the remote TX port will become off. Link status LED will also be off for both
IP113A LF and its link partner.
IP113A
LF
IP113A
LF
UTP
Fiber
Switch1 or
NIC 1
Switch2 or
NIC 2
(1) TP port link failed
link off
The procedure of link fault pass through
(3) fiber port gets remote
link fault information
(4) TP link fail
(5) remote TP
link is off
(2) fiber port sends
non-idle pattern
UTP
local
remote
Normal case
IP113A
LF
IP113A
LF
UTP
UTP
Fiber
Switch1
Switch2
LED
SW1
LED_TP_LINK1 LED_FX_LINK1
LED
SW2
local
remote
LED_FX_LINK2 LED_TP_LINK2
Link LED on
SW1
LED_TP_LINK1 LED_FX_LINK1 LED_FX_LINK2 LED_TP_LINK2
Link LED on
SW2
ON
ON
ON
ON
ON
ON
Remote TP port disconnected
IP113A
LF
IP113A
LF
Fiber
Switch1
Switch2
LED
SW1
LED
SW2
local
remote
LED_TP_LINK1 LED_FX_LINK1
LED_FX_LINK2 LED_TP_LINK2
UTP
UTP
disconnect
Link LED on
SW1
LED_TP_LINK1 LED_FX_LINK1 LED_FX_LINK2 LED_TP_LINK2
Link LED on
SW2
Off
Off
Off
Off
Off
Off
April 9, 2007
13/22
Copyright © 2004, IC Plus Corp.
IP113A LF-DS-R08
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