Cisco 12008, Installation And Configuration Manual, Page: 271 / 382

C H A P T E R
Running Diagnostics on the Cisco 12008 6-1
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:
•
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:
•
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.