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Chapter 5 Troubleshooting and maintenance
Chapter contents
Introduction..........................................................................................................................................................82
Troubleshooting during initial deployment ...........................................................................................................82
General fault analysis.............................................................................................................................................83
Matrix Switch test tools.........................................................................................................................................86
Loopback test modes for the STM-1 port .......................................................................................................86
Facility Loop [sonetFacilityLoop(1)] .........................................................................................................87
Terminal loop [sonetTerminalLoop(2)] ....................................................................................................88
Other Loop [sonetOtherLoop(3)] .............................................................................................................90
SDH section trace and path trace ....................................................................................................................90
Sections and paths .....................................................................................................................................91
Section trace ..............................................................................................................................................91
Path trace ..................................................................................................................................................92
Number of paths per frame .......................................................................................................................93
Periodic maintenance ............................................................................................................................................94
Calibration ......................................................................................................................................................94
Maintenance..........................................................................................................................................................94
Replacing the Model 6511RC .........................................................................................................................94
Exporting the current Model 6511RC configuration ................................................................................94
Removing the defective Model 6511RC ....................................................................................................97
Installing the replacement Model 6511RC ................................................................................................98
Importing a saved configuration ................................................................................................................98
Completing the installation .......................................................................................................................99