Overview; Alarms, Conditions, And History - Cisco ONS 15600 Reference Manual

Alarm Monitoring and Management
This chapter explains how to manage alarms with Cisco Transport Controller (CTC), which includes:
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To troubleshoot specific alarms, refer to the Cisco ONS 15600 SDH Troubleshooting Guide.

11.1 Overview

CTC detects and reports SDH alarms generated by the Cisco ONS 15600 SDH and the larger SDH
network. You can use CTC to monitor and manage alarms at the card, node, or network level. Default
alarm severities conform to the ITU-T G.733 standard, but you can set alarm severities in customized
alarm profiles or suppress CTC alarm reporting. For a detailed description of the standard Telcordia
categories employed by Optical Networking System (ONS) nodes, refer to the Cisco ONS 15600 SDH
Troubleshooting Guide "Alarm Troubleshooting" chapter.
ONS 15600 SDH alarms can also be monitored and managed through TL1 or a network management
Note
system (NMS).

11.2 Alarms, Conditions, and History

In the card, node, or network level CTC view, click the Alarms tab to display the alarms for that card,
node or network. The Alarms window shows alarms in conformance to ITU-T G.733. This means that if
a network problem causes two alarms, such as loss of frame (LOF) and loss of signal (LOS), CTC only
shows the LOS alarm in this window because it supersedes LOF. (The LOF alarm can still be retrieved
in the Conditions window.)
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11.1 Overview, page 11-1
11.2 Alarms, Conditions, and History, page 11-1
11.3 Alarm Profiles, page 11-10
11.4 Alarm Filter, page 11-13
11.5 Alarm Suppression, page 11-13
11.6 External Alarms and Controls, page 11-14
C H A P T E R
Cisco ONS 15600 SDH Reference Manual, Release 9.0
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