Router Field Diagnostics - Cisco 12410 Installation And Configuration Manual

Router Field Diagnostics

This chapter describes the diagnostic commands you can use to troubleshoot line
cards, Route Processor cards (PRP and GRP), Switch Fabric Cards (SFC), and
Clock Scheduler Cards (CSC) installed in Cisco 12010, Cisco 12410, and Cisco
12810 routers.
You can run field diagnostics to help isolate a faulty line card without disrupting
the operation of the system. Field diagnostics are not designed to identify specific
components within the router. They simply determine whether a particular card is
operational or defective.
Starting with Cisco IOS Release 12.0(22)S, the line card field diagnostics image
Note
is not bundled with the main Cisco IOS image. Line card field diagnostics are now
stored and maintained as a separate image that must be available on a flash
memory card or TFTP boot server before you enter the diagnostic commands.
Route processor and switch fabric card field diagnostics continue to be bundled
with the main Cisco IOS image and do not need to be launched from a separate
image.
Unbundled field diagnostics provide the following benefits:
•
•
Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
OL-11496-01
In-service testing—Field diagnostics can be run on an in-service router
running Cisco IOS and only take the card being tested out of service. The
tested card is returned to normal operation if the diagnostic tests pass. If there
is a hardware fault, the card remains out of service after the testing is
completed.
Smaller Cisco IOS image—The smaller IOS image helps accommodate
customers with 20 MB flash memory cards.
C H A P T E R
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