9.3 Systematic approach

Figure 9-1provides a basic flow diagram on how to approach troubleshooting Nortel Networks L2/3 GbESM.

Define Problem

Collect Data

Analyse Data

Create Action Plan

Implement Action Plan

Observe Results

Problem Resolved

Figure 9-1 Basic flow diagram

9.3.1 Problem definition

In this step, we make an effort to define our problem by asking the following questions:

￿Who is affected?

￿What are the symptoms of the problem?

￿What problems could cause these symptoms?

￿When does the problem occur?

￿Where in the network are the symptoms seen?

￿Is it a hardware or software issue?

158Nortel Networks L2/3 Ethernet Switch Module for IBM Eserver BladeCenter

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IBM L2/3 manual Systematic approach, Problem definition