CHAPTER
2-1
Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
2
Alarm Troubleshooting
Note The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
This chapter gives a description, severity, and troubleshooting procedure for each commonly
encountered Cisco ONS 15310-MA SDH alarm and condition. Tables 2-1 through 2-5 list the alarms of
both platforms, organized by severity. Table 2-6 on page 2-6 provides a list of alarms organized
alphabetically. Table 2-7 gives definitions of all ONS 15310-MA SDH alarm logical objects, which are
the basis of the alarm profile list in Table 2-8 on page 2-11. For a comprehensive list of all conditions,
refer to the Cisco SDH TL1 Command Guide. For further information about Transaction Language One
(TL1), refer to the Cisco ONS SDH TL1 Reference Guide.
An alarm’s troubleshooting procedure applies to both the Cisco Transport Controller (CTC) and the TL1
version of that alarm. If the troubleshooting procedure does not clear the alarm, log into the Technical
Support Website at http://www.cisco.com/cisco/web/support/index.html for more information or call the
Cisco Technical Assistance Center (1-800-553-2447).
More information about alarm profile information modification and downloads is located in the “Manage
Alarms” chapter in the Cisco ONS15310-MA SDH Procedure Guide.
2.1 Alarm Index by Default Severity
The following tables group alarms and conditions by their default severities in the ONS 15310-MA SDH
systems. These severities are the same whether they are reported in the CTC Alarms window severity
(SEV) column or in TL1.
Note The CTC default alarm profile contains some alarms or conditions that are not currently implemented
but are reserved for future use.
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