Overview, Switch, Chapter 7: setting up the missinglink feature 92 – Allied Telesis AT-S65 User Manual
Page 92: Class 1 laser product, Reset
Chapter 7: Setting Up the MissingLink Feature
92
Overview
If the AT-LX3800U system detects a problem with an SFP port, the
MissingLink feature passes this information to the remote multiplexer
which shuts down the connection and notifies the end node connected to
that port that the connection has been lost. The AT-S65 management
software provides two types of missing link reporting: port and line.
For example, if there is a loss of connection between a unit such as a
switch and the SFP transceiver in the line card in slot 1 on the local
AT-LX3800U system, the remote AT-LX3800U system drops the link to
the SFP transceiver in the line card in slot 1 and therefore to the unit
connected to it. This is shown in Figure 44.
Figure 44. MissingLink Example #1
TX
RX
CLASS 1
LASER PRODUCT
100 10
10/100Base-TX
RS-232
TERMINAL
FT
CO
PA
PB
8
RESET
AT-LX3800U
1
2
3
4
5
6
7
8
LINE
AT-LX3811/1
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/3
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/4
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/5
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/6
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/7
AT-LX3811/2
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/8
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
TX
RX
CLASS 1
LASER PRODUCT
100 10
10/100Base-TX
RS-232
TERMINAL
FT
CO
PA
PB
8
RESET
AT-LX3800U
1
2
3
4
5
6
7
8
LINE
AT-LX3811/1
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/3
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/4
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/5
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/6
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/7
AT-LX3811/2
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
AT-LX3811/8
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
Switch
Switch
Failure of fiber optic cable
LX3800U drops connection
Local LX3800U System
Remote LX3800U System