Troubleshooting Alarms; Ais; Clear The Ais Alarm - Cisco NCS 4000 Series Troubleshooting Manual

Troubleshooting Alarms

The Alarms or History tab State (ST) column indicate the disposition of the alarm or condition as follows:
• A raised (R) event is one that is active.
• A cleared (C) event is one that is no longer active.
• A transient (T) event is one that is automatically raised and cleared in CTC during system changes such
Troubleshooting Alarms
This chapter lists the alarms alphabetically and includes some conditions commonly encountered when
troubleshooting the alarms. The severity, description, and troubleshooting procedure accompany each alarm
and condition.
Note
When you check the status of alarms for cards, ensure that the alarm filter icon in the lower right corner of
the GUI is not indented. If it is, click it to turn it off. When you are done checking for alarms, you can click
the alarm filter icon again to turn filtering back on.
Note When checking alarms, ensure that alarm suppression is not enabled on the card or port.

AIS

Default Severity: Not Alarmed (NA), Service-Affecting (SA)
Logical Object: PORT
An alarm indication signal (AIS) is a maintenance signal that is sent downstream as an indication that an
upstream defect has been detected. AIS occurs if the accepted STAT information is 111.

Clear the AIS Alarm

Procedure
Step 1
Check all the alarms on the circuit.
Step 2 Identify the root cause alarm which has triggered the AIS alarm. The alarms that could trigger the AIS alarm
are - LOF, LOS, TIM, FEC-MISM, ODUk-TIM-PM, OTUk-SF, SF-L.
Step 3
Clear the root cause alarm.
The clearing procedures for the above mentioned alarms are discussed on the subsequent pages.
• LOF
• LOS -
• FEC-MISM -
Alarms Troubleshooting Guide for Cisco NCS 4000 Series
4
as user login, logout, loss of connection to node/shelf view, etc. Transient events do not require user
action.
-Clear the LOF Alarm, on page 12
Clear the LOS Alarm, on page 13
Clear the FEC MISM Alarm, on page 6
Alarm Management