Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
RFI-V indicates that an upstream failure has occurred at the VT layer. The VT (electrical) layer is created
when the SONET signal is broken down into an electrical signal, for example when an optical signal
comes into an ONS 15454. If this optical signal is demultiplexed and one of the channels separated from
the optical signal is cross connected into the DS-1 port in the ONS 15454, the ONS 15454 reports an
RFI-V alarm.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15454.
Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf
assembly.
Procedure: Clear the RFI-V Condition on the DS3XM-6 or DS-1 Card
Step 1 Check connectors to ensure they are securely fastened and connected to the correct slot/port.
Step 2 Verify that the DS-1 port is active and in-service.
Step 3 Check the signal source for errors.
Step 4 Log into the far-end node from the reporting ONS 15454.
Step 5 Check for alarms in the far-end node, especially UNEQ-P or UNEQ-V.
Step 6 Find and troubleshoot the far-end node alarms.
1.3.102 RING-MISMATCH
• Major, Service affecting
A Procedural Error Mismatch Ring alarm occurs when the Ring ID of the ONS 15454 that is reporting
the alarm does not match the Ring ID of another ONS node in the BLSR. ONS nodes connected in a
BLSR must have identical Ring IDs to function.
Procedure: Clear the RING-MISMATCH Alarm
Step 1 Click the Provisioning > Ring tabs.
Step 2 Note the number in the Ring ID field.
Step 3 Log into the next ONS node in the BLSR.
Step 4 Verify that the Ring ID number matches the Ring ID number of the reporting node.
a. If the Ring ID matches the Ring ID in the reporting ONS node, log into the next ONS node in the
BLSR.
b. If the Ring ID does not match the Ring ID in the reporting ONS node, change the Ring ID to match
the Ring ID of the reporting node and click Apply.
c. Click Yes on the Accept Ring Map Changes dialog box.
d. Verify that the ring map is correct.
e. Click Accept for the new BLSR Ring Map.