Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
1.3.56 FE-LOS
• Not Alarmed (NA) (Condition)
The far-end node reports a DS-3 loss of signal (LOS). The prefix FE in an alarm message means that the
main alarm is occurring at the far-end node, and not at the node reporting this FE-LOS alarm.
Troubleshoot the FE alarm by troubleshooting the main alarm at its source. Both alarms clear when the
main alarm clears.
Procedure: Clear the FE-LOS Condition on the DS3XM-6 or DS-3E Cards in C-bit Format
Step 1 To troubleshoot the FE alarm, determine which node and card link directly to the card reporting the FE
alarm. For example, an FE-AIS alarm from the DS3XM-6 card in Slot 12 of Node 1 may link to the main
AIS alarm from a DS3XM-6 card in Slot 6 of Node 2.
Step 2 Log into the node that links directly to the card reporting the FE alarm.
Step 3 Clear the main alarm.
1.3.57 FEPRLF
• Minor, Non-service affecting
The Far End Protection Line Failure alarm means that there was an APS switching channel failure on a
signal coming into the node.
Note The FEPRLF alarm only occurs on the ONS 15454 when 1+1 bidirectional protection is used on
optical cards in a 1+1 configuration.
Procedure: Clear the FEPRLF Alarm on a Four-Fiber BLSR
Step 1 To troubleshoot the FE alarm, determine which node and card link directly to the card reporting the FE
alarm. For example, an FE-AIS alarm from the DS3XM-6 card in Slot 12 of Node 1 may link to the main
AIS alarm from a DS3XM-6 card in Slot 6 of Node 2.
Step 2 Log into the node that links directly to the card reporting the FE alarm.
Step 3 Look up and troubleshoot the main alarm.
1.3.58 FORCED-REQ
• Not Alarmed (NA) (Condition)
A user entered the force command on a span or card to force traffic from a working card or working span
to a protection card or protection span or vice versa. You do not need to clear this alarm if you want the
force switch to remain in place. To clear this alarm, clear the force command.