Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
RFI-L indicates that the alarm is occurring at the line level. The line layer is the segment between two
SONET devices in the circuit and is also known as a maintenance span. The line layer deals with SONET
payload transport. The line layer functions include multiplexing and synchronization.
Procedure: Clear the RFI-L Condition on the OC-N or EC-1 Card
Step 1 Log into the far-end node from the reporting ONS 15454.
Step 2 Check for alarms in the far-end node, especially LOS.
Step 3 Resolve alarms in the far-end node.
1.3.100 RFI-P
• Not reported
A Remote Failure Indication Path alarm occurs when the ONS 15454 detects an RFI in the SONET
overhead because of a fault in another node. Resolving the fault in the adjoining node clears the RFI-P
alarm in the reporting node.
RFI-P occurs in the node that terminates a path. The path layer is the segment between the originating
equipment and the terminating equipment. This segment may encompass several consecutive line
segments. The originating equipment puts bits together into a SONET payload and the terminating
equipment breaks the bits apart again. SONET multiplexers, such as the ONS 15454, often perform the
origination and termination tasks of the SONET payload.
An RFI-P error message on the ONS 15454 indicates that the node reporting the RFI-P is the terminating
node on that path segment.
Procedure: Clear the RFI-P Condition on the DS-N or Ethernet Card
Step 1 Verify that the ports are enabled and in-service on the reporting ONS 15454.
Step 2 To find the path and node failure, verify the integrity of the SONET STS circuit path at each of the
intermediate SONET nodes.
Step 3 Check for alarms in the node with the failure, especially UNEQ-P or UNEQ-V.
Step 4 Resolve alarms in that node.
1.3.101 RFI-V
• Not reported
A Remote Fault Indication VT alarm occurs when the ONS 15454 detects an RFI in the SONET overhead
because of a fault in another node. Resolving the fault in the adjoining node clears the RFI-V alarm in
the reporting node.