Cisco Systems Cisco 12008 manual Running Diagnostics on the Cisco, Diagnostic Test Overview

C H A P T E R 6

Running Diagnostics on the Cisco 12008

Field diagnostics are available for the Cisco 12008 to help you isolate faulty hardware to the level of a field-replaceable unit (FRU) without disrupting the operation of the system. After you identify the faulty unit, you can replace it with a spare unit.

Field diagnostics are not designed to identify specific components within the router. They simply determine whether a particular card is operational or defective.

Running Diagnostics on the Cisco 12008 is presented in the following sections:

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Diagnostic Test Overview on page 1

Using the diag Command on page 2

Diagnostic Testing Sequence on page 3

Loading and Running Diagnostics on page 4

Diagnostic Test Overview

There are more than a hundred diagnostic tests for line cards, including the following:

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Processor tests

Memory tests

Component tests

Major data path tests

The field diagnostics software image is bundled with the Cisco IOS software and is downloaded from the route processor (RP) to the target card before testing.

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