CANOGA PERKINS 9161 Network Interface Device - Manual (Page 14)

Table 2. 9161 Interface LEDs
LED Status Description
TX Off No transmission activity
Green blinking Transmission activity
Amber System self-test
Red Port disabled; may be due to Link Loss Forwarding (LLF)
RX Off No link
Green Link established
Green blinking Receiving activity
Amber System self-test
Red Receiving Remote Fault
NET Off Non-network connection
Green Network connection
Amber System self-test
3.3 Alarms
The 9161 can generate Traps and Major and Minor Alarms. For details about the Traps Log and
setting up notification, see Chapter 4.
3.3.1 Remote Fault
If the Extension 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 Extension port; see Figure 2. When the Extension
port receives a Remote Fault signal, the Rx LED lights red and an alarm flags the remote side optical
link failure. Both local and remote link partners must be configured to the same RMTF
enable/disable setting. To set RMTF in software, see Section 4.7. 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
9161 Network Interface Device 3-2