CANOGA PERKINS 9151 Network Interface Device - Manual (Page 12)

LED Status Description
SPD Off 10BaseT data rate
Amber 100BaseT data rate or system self-test
Green 1000BaseT data rate
Alarms
The 9151 can generate Major and Minor Alarms. For details about the Alarm Output Configuration,
Alarm Log, and Trap Configuration screens, see Chapter 4.
Remote Fault
If an optical port Rx loses the signal, it sends a Remote Fault (RMTF) signal from its Tx, the Rx LED
is off, and an alarm flags the link loss on the optical port. When an optical port receives a Remote
Fault signal, the Rx LED lights red and an alarm flags the remote side optical link failure. See
Figure 2. Both local and remote link partners must be configured to the same RMTF enable/disable
setting. To set RMTF in software, see page 3-8. RMTF complies with the IEEE802.3u Remote Fault
standard.
Usr
Prt
Ext
Prt
Rx
Rx Tx
Tx
Usr
Prt
Ext
Prt
Rx
Rx Tx
Tx
RMTF
Local Device Remote Device
• Tx transmits RMTF to remote device
• Local device Rx turns OFF
• Local device Rx detects link loss
• Remote device Rx lights red
Figure 2. Remote Fault Signal
9151 Network Interface Device 2-4