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16 C2607M (2/07)
Table A. TX Mode Switch Settings
SETTING FIBER FAILOVER MODE
NOTE: As a matter of convenience, it is recommended that you set fiber failover (redundancy)
mode—if required—before mounting the FX82052 module into a rack or onto a wall. Fiber failover
mode is disabled by default.
The FX82052 module can operate in fiber failover mode to allow automatic fiber redundancy
operation. If the primary fiber link fails, the secondary (backup) fiber link becomes operational.
Note that fiber failover mode can be used in point-to-point applications only.
To allow you to set fiber failover mode, an FX Mode switch is provided on the bottom of the module
(refer to Figure 7 and to Table B).
NOTES:
• FX Mode configuration must be set when the module is powered off. If you wish to change the
FX Mode switch setting after the module has been powered on, power off the module, change
the FX Mode switch setting, and then power on the module again.
• The Fiber Failover LED on the front of the module indicates the status of fiber failover mode.
For detailed information, refer to Troubleshooting on page 26.
TX Mode
Switch Position 10BASE-T/100BASE-TX Modes of Operation
0 Auto Neg/Dis FC: Enables autonegotiation between 10 Mbps and
100 Mbps and between half-duplex and full-duplex modes, disables
flow control (default setting)
1 100 FD/Dis FC: Selects 100 Mbps full-duplex, disables flow control
2 100 HD/DIS FC: Selects 100 Mbps half-duplex, disables flow control
3 10 FD/Dis FC: Selects 10 Mbps full-duplex, disables flow control
4 10 HD/Dis FC: Selects 10 Mbps half-duplex, disables flow control
5 Auto Neg/En FC: Enables autonegotiation between 10 and 100 Mbps
and between half-duplex and full-duplex modes, enables flow control
6 100 FD/En FC: Selects 100 Mbps full-duplex, enables flow control
7 100 HD/En FC: Selects 100 Mbps half-duplex, enables flow control
8 10 FD/En FC: Selects 10 Mbps full-duplex, enables flow control
9 10 HD/En FC: Selects 10 Mbps half-duplex, enables flow control
NOTE: Switch positions 0-4 disable flow control. Positions 5-9 enable flow control.