Monitoring, Troubleshooting and Recommendations
Monitoring and troubleshooting the SGSN are not unrelated tasks that use many of the same procedures. This chapter provides information and instructions for using the system command line interface (CLI), primarily the show command, to monitor service status and performance and to troubleshoot operations.
The show commands used for monitoring and troubleshooting include keywords (parameters) that can fine-tune the output to produce information on all aspects of the system, ranging from current software configuration through call activity and status. The keywords, used in the procedures documented in this chapter, are intended to provide the most useful and in-depth information for monitoring the system. To learn about all of the keywords possible, refer to the Command Line Interface Reference. To learn about the details for the information in the show command outputs, refer to the Statistics and Counters Reference.
In addition to the CLI documented in this chapter, the system supports other monitoring and troubleshooting tools:
- SNMP (Simple Network Management Protocol) traps that indicate status and alarm conditions. Refer to the SNMP MIB Reference for a detailed listing of these traps.
- bulk statistics (performance data) which can be accessed in various manners. For a complete list of SGSN supported statistics, refer to the Statistics and Counters Reference. For information about configuring the formats for static collection, refer to the Command Line Interface Reference.
- threshold crossing alerts for conditions that are typically temporary, such as high CPU or port utilization, but can indicate potentially severe conditions. For information on threshold crossing alert configuration, refer to the Thresholding Configuration Guide.
The monitoring and troubleshooting procedures are organized on a task-basis with details for:
(information required regularly)
- Daily Standard Health Check
- Monthly System Maintenance
- Semi-Annual Check
(information required intermittently)
- Overview of Possible Fault Types
- Single and Mass Problem Scenarios
- Reference Materials (information required infrequently)