CANOGA PERKINS 9145ELB Network Interface Device Hardware - Manual (Page 41)

Troubleshooting 9145ELB NID Hardware User’s Manual
Optical Power Loss
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Chapter 5
Troubleshooting
This chapter describes fault conditions and how to determine corrective action.
The front panel LEDs provide both normal and fault information. For a description of LED
functions and indicators:
• For Ethernet Management, Status, and Power LEDs, see Table 4-2 on page 23
• For User Port LEDs, see Table 4-3 on page 24.
• For SFP and Dual 10G Optical Ethernet Module LEDs, see Figure 2-5
5.1 Optical Power Loss
Whenever there is a significant signal loss, the Rx indictor turns off. If this occurs, check the
cable integrity, and remove and inspect the connectors, being careful not to damage the fiber
end-face surface or the connector housing. Clean all optical connectors before reinstalling them.
5.2 Fault Conditions
The 9145ELB front panel and interface module LEDs show fault conditions. Additional
information about fault conditions appears on the System Alarms Log. Use the System Alarms
Screen to view alarms and faults on the 9145ELB.
For more details, see the 9145ELB NID Software User’s Manual.
5.2.1 Remote Fault
If an optical port loses the RX optical signal, it sends a Remote Fault (RMTF) signal on its
Transmit to the distant end on the optical link. The SPD LED is off, and an alarm flags the link
loss on the optical port. When an optical port receives a Remote Fault signal, the Link Activity
(LA) 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 (
Figure 5-1 ).
Remote fault occurs on an optical link only.