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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Preface
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 section explains the objectives, intended audience, and organization of this publication and
describes the conventions that convey instructions and other information.
This section provides the following information:
• Revision History
• Document Objectives
• Audience
• Related Documentation
• Document Conventions
• Obtaining Optical Networking Information
• Obtaining Documentation and Submitting a Service Request
Revision History
This is the first issue of this publication.
Date Notes
November 2007 Added this Revision History Table
Updated APC-DISABLED alarm details in the "Alarms and Conditions Listed
By Alphabetical Entry" and "Alarm List by Logical Object Type" sections of
Chapter 2, Alarm Troubleshooting.
April 2008
• Updated section "2.7.326 PORT-MISMATCH" (changed ML-Series to
ML-MR-10) of Chapter 2, Alarm Troubleshooting
• Added EID-6147 and EID-6148 in the Error Messages chapter.
June 2008 Updated FAILTOSW alarm in Chapter 2, Alarm Troubleshooting.
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