Troubleshooting guide

CHAPTER
4-1
Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
4
Maintenance and Troubleshooting Overview
Revised: March 7, 2011, OL-0800-14
This chapter contains an overview of maintenance and troubleshooting concepts that you can apply to
maintaining the elements of the Cisco PGW 2200 Softswitch platform. It includes overall maintenance
and system troubleshooting strategies, and reviews available troubleshooting tools.
Although this chapter describes maintenance and troubleshooting separately, these activities are
associated. Therefore, several of the maintenance and troubleshooting chapters in this guide frequently
refer to each other.
This chapter includes the following sections:
• Maintenance Strategy Overview, page 4-1
• Troubleshooting Strategy Overview, page 4-2
Maintenance Strategy Overview
Maintenance usually consists of the following tasks for each element of the Cisco PGW 2200 Softswitch
platform, performed in the order listed:
• Checking equipment status. Determining the status involves three basic activities:
– Reading LEDs—Most Cisco products include LED indicators on the front or rear panels and,
in some cases, on both panels. These LEDs indicate the status of the equipment. The specific
meaning of each LED on each product is described in the maintenance sections for the
individual elements of the Cisco PGW 2200 Softswitch platform.
– Issuing Status Queries—Query the status of the system by entering various commands. The
maintenance sections for the individual elements of the Cisco PGW 2200 Softswitch platform
provide the commands that you can use to determine the status of the devices in your system.
– Using a GUI NMS—Maintenance sections for the individual elements of the Cisco PGW 2200
Softswitch platform describe how to use a network management system (NMS) with a GUI,
such as CiscoWorks2000, Cisco WAN Manager, and Cisco MGC Node Manager (CMNM), to
determine the operational status of system devices.
• Removing a device from the system—Maintenance sections for the individual elements of the Cisco
PGW 2200 Softswitch platform include procedures for removing defective devices from the system.
• Replacing the complete device—Maintenance sections for the individual elements of the Cisco
PGW 2200 Softswitch platform describe how to reinstate a device into the system by using a new or
repaired model.