Chapter 5 Field Diagnostics for the Cisco 12000 Series Router
Using the diag Command
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
• For TFTP boot servers, the source path would typically be
tftp://tftp_server_ip_address/my_directory/c12k-fdiagsbflc-mz.120-25.S.
Caution Do not unplug the line card or terminate the field diagnostics session during this
test.
Using the diag Command
To perform field diagnostics on a line card, route processor (RP) (including both
the performance route processor [PRP] and gigabit route processor [GRP]),
switch fabric card (SFC), or clock and scheduler card (CSC), use the diag
command in privileged EXEC configuration mode. To halt a running field
diagnostic session on a line card or RP, use the diag halt form of this command.
Caution Some line cards include components that are unable to isolate internal line card
testing traffic from customer premise connections. When testing these line cards,
you are warned and notified to disconnect any connections to these line cards
before testing to achieve the most reliable results and minimize traffic disruption.

Cisco 12000 Series Router Line Cards

The following command examples apply to line card field diagnostics.
diag slot-number source {tftp | flash} source-path [verbose] [wait] [full]
[coe] [dl-timeout-plus <1-2000>] [device] [messaging]
diag slot-number previous
diag slot-number halt
diag slot-number update-fpga source {tftp | flash} source-path
[dl-timeout-plus <1-2000>]