Cisco ONS 15454 - CHAPTER 2 Alarm Troubleshooting; 2.1 Alarm Indexes by Default Severity

CHAPTER
2-1
Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
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 15454 alarm and condition. Tables 2-1 through 2-5 provide lists of ONS 15454
alarms organized by severity. Table 2-6 on page 2-11 provides a list of alarms organized alphabetically.
Table 2-7 gives definitions of all ONS 15454 alarm logical objects, which are the basis of the alarm
profile list in Table 2-8 on page 2-22. For a comprehensive list of all conditions and instructions for
using TL1 commands, refer to the Cisco ONS SONET TL1 Command Guide .
An alarm’s troubleshooting procedure applies to both the Cisco Transport Controller (CTC) and 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/techsupport for more information or call the Cisco Technical
Assistance Center 1 800 553-2447.
For more information about alarm profiles, refer to the “Manage Alarms” chapter in the
Cisco ONS 15454 Procedure Guide.
2.1 Alarm Indexes by Default Severity
The following tables group alarms and conditions by their default severities in the ONS 15454 system.
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.
Note The CTC default alarm profile in some cases contains two severities for one alarm (for example,
MJ/MN). The ONS 15454 platform default severity comes first (in this example, MJ), but the alarm can
be demoted to the second severity in the presence of a higher-ranking alarm. This is in accordance with
Telcordia GR-474.