Cisco PXM Version 1.1 User's Guide download pdf (Page 391)

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CHAPTER

9-1

Cisco Media Gateway Manager 5.0 User Guide

OL-5461-02

Managing Faults

This chapter describes the process of fault management, and details the options available in Cisco MGM

to locate, diagnose and correct network problems. This chapter includes the following information:

• 9.1 What Is Fault Management?

• 9.2 Where Can I Get Information on Affected Services and Customers?

• 9.3 What Fault Information Can I See?

• 9.4 Is the Service Working?

• 9.5 Where Is the Fault?

• 9.6 How Can I Use Advanced Debugging to Find the Cause of the Fault?

• 9.7 What Is the Fault Priority?

• 9.8 Who Is Responsible for Managing the Fault?

• 9.9 How Did You Manage the Fault?

9.1 What Is Fault Management?

Fault management (FM) is the process of locating, diagnosing, and correcting network problems. This

is important for increasing network reliability and effectiveness, and for increasing the productivity of

network users. Fault management is more than just handling emergencies. It is the detection, isolation,

and correction of abnormal conditions in the network and its environment. It provides functions for

managing problems with services and handling customer-facing service problems.

Efficient fault management can:

• Reduce repair costs through efficient fault detection, location, and correction.

• Improve customer care through efficient trouble administration.

• Improve service availability and equipment reliability through proactive maintenance and through

measurement, review, and corrective action.

One responsibility of fault management is to detect faults. A piece of equipment, a transmission medium,

a software module, or a database is said to be in a fault state if it cannot perform its intended function

and meet all of the requirements placed on that function. The onset of a fault is called a failure event and

is usually signaled by one or more alarm reports. The termination of a fault state is called a clear event.

Fault management is responsible for determining, from a variety of information sources, the root cause

of a fault, and for its repair. In certain cases, the root cause of a fault may be in a connecting network.

In such cases, fault management is responsible for reporting the problem through appropriate channels.

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