2-102
Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.111 FDI
Note If a port in the IS admin state does not receive a signal, the LOS alarm is raised and the port
service state transitions to OOS-AU,FLT.
Step 3 Program the Credits Available value based on the buffers available on the connected equipment:
Note The NumCredits must be provisioned to a value smaller than or equal to the receive buffers or
credits available on the connected equipment.
a. Double-click the FC_MR-4 card.
b. Click the Provisioning > Port > Distance Extension tabs.
c. Enter a new value in the Credits Available column.
d. Click Apply.
Step 4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447 to report a
Service-Affecting (SA) problem.
2.7.111 FDI
For information about this alarm or condition, refer to the “Alarm Troubleshooting” chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.112 FE-AIS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
The Far-End AIS condition occurs when an AIS has occurred at the far-end node. FE-AIS usually occurs
in conjunction with a downstream LOS alarm (see the “LOS (OCN)” alarm on page 2-164).
Generally, any AIS is a special SONET signal that communicates to the receiving node when the transmit
node does not send a valid signal. AIS is not considered an error. It is raised by the receiving node on
each input when it detects the AIS instead of a real signal. In most cases when this condition is raised,
an upstream node is raising an alarm to indicate a signal failure; all nodes downstream from it only raise
some type of AIS. This condition clears when you resolved the problem on the upstream node.
Clear the FE-AIS Condition
Step 1 Complete the “Clear the AIS Condition” procedure on page 2-37.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
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