Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
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Chapter 2 Troubleshooting Overview
Troubleshooting Strategy
Fault Analysis
Troubleshooting begins with analyzing the following in the order listed:
1. Alarms and system messages (if present)
2. Call traces and log files (if availabale)
3. Software and system state(s)
4. Signaling links and destinations
5. Bearer channels and destinations
6. Hardware components (interfaces, cables, indicators)
Troubleshooting usually includes the following tasks for each element of the Cisco Broadband Local
Integrated Services Solution, performed in the order listed:
1. Checking equipment status. Determining the current status involves three basic activities:
a. Reading LEDs—Most Cisco products include light-emitting diode (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 Broadband Local Integrated Services Solution.
b. Issuing Status Queries—You can query the status of the system using various commands. The
commands that can be used to determine the status of the devices in your system are described
in the maintenance sections for the individual elements of the Cisco Broadband Local
Integrated Services Solution.
c. Using a GUI NMS—Using a network management system (NMS) with a graphical user
interface (GUI), such as CiscoWorks2000 or Cisco WAN Manager, to determine the operational
status of system devices is described in detail in the maintenance sections for the individual
elements of the Cisco Broadband Local Integrated Services Solution.
2. Removing the device from the system—Procedures for removing defective devices from the system
with as little impact on the system as possible are described in the maintenance sections for the
individual elements of the Cisco Broadband Local Integrated Services Solution.
3. Replacing the complete device—Reinstating a device into the system using a new or repaired model,
again with as little impact on the system as possible, is described in the maintenance sections for the
individual elements of the Cisco Broadband Local Integrated Services Solution.
4. Replacing hardware components—Swapping out components of a device is a maintenance task used
for replacing defective components and for upgrading hardware. The maintenance chapters for each
element of the Cisco BTS 10200 Softswitch node include sections describing how to replace the
field-replaceable components of that device.