Cisco Systems Cisco 12816 Manuale Utente

Diagnostic testing stops when all of the tests are completed, are terminated by the 
user, or by default if an error is encountered. If multiple cards are specified for the 
test cycle, the diagnostics stop testing a card when it fails a test, but then continues 
testing the remaining cards.

When testing is finished, a pass or fail message appears on the console, and on the 
alphanumeric LED display on the card being tested.

Before you can use the diagnostic commands, you must download a valid 
diagnostic image to a flash memory card installed in the router or to an TFTP boot 
server.

Field diagnostic images are 10 to 18 MB in size, and Cisco IOS images are 
slightly larger. One 64 MB flash memory card can store both images, or the 
images can be stored individually on two 20 MB memory cards.

The name of the field diagnostic image is c12k-fdiagsbflc-mz and the latest 
version is always available on Cisco.com. The image name is combined with the 
Cisco IOS release number, for example: c12k-fdiagsbflc-mz 120-25.S

In this example, 120-25.S is the release number of the image that corresponds to 
the Cisco IOS image: Cisco IOS Release 12.0(25)S.

All Cisco field diagnostic images available on Cisco.com are compatible with 
Cisco IOS Release 12.0(22)S and later. We recommend that you use the latest 
available diagnostic image for testing and verifying line cards.

Some Cisco 12000 series line cards store hardware information as software code 
in the form of a field-programmable gate array, or FPGA. This code is 
permanently placed in flash memory on the line card. Occasionally, this flash 
memory code must be updated with new FPGA code containing feature 
enhancements or code improvements.