General Troubleshooting Procedures; Obtaining Diagnostic Information - H3C S5830 Series Troubleshooting Manual

General troubleshooting procedures

This chapter describes how to obtain information for troubleshooting problems. This document is not
restricted to specific software or hardware versions.

Obtaining diagnostic information

Diagnostic information is important for locating and solving problems. You can execute the display
diagnostic-information command to obtain diagnostic information.
H3C recommends that you execute the display diagnostic-information command over Telnet instead of
the console port because information collection through the console port (9600 bps) takes a long time.
Information collection on an IRF fabric takes more time than on a single device.
To obtain diagnostic information:
<Sysname> display diagnostic-information
Save or display diagnostic information (Y=save, N=display)? [Y/N]:y
Please input the file name(*.diag)[flash:/default.diag]:aa.diag
Diagnostic information is outputting to flash:/aa.diag.
Please wait.................
Save successfully.
The following describes the output information above:
save or display diagnostic information (Y=save, N=display)? [Y/N]:
This prompt asks you whether to save diagnostic information into a .diag file in the flash memory.
If the free space of the flash memory is larger than 10 MB, H3C recommends that you enter y to
•
save diagnostic information into a .diag file. After you enter y, the following prompt appears:
Please input the file name(*.diag)[flash:/default.daig]:
Enter a name for the .diag file at the prompt. If you press Enter, the default name default.diag is
used. You can enter a name to differentiate between different .diag files.
If the name you entered already exists, the following prompt appears:
The file already exists, overwrite it? [Y/N]
If you enter y, the new file overwrites the old file. If you enter n, the system returns to the view in
which you executed the display diagnostic-information command. You need to execute the
display diagnostic-information command again and enter a new name for the .diag file.
Please wait.................
The system continues to print dots while saving the diagnostic information. If a fault occurs, the
interval between dots will increase, but it will not exceed 2 minutes.
After the system saves the diagnostic information, you can execute the dir command in user view
to verify whether the diagnostic file exists in the flash memory.
<Sysname>dir
Directory of flash:/
0
1
2
-rw- 6797 Jun 14 2012 10:37:42
drw- - Sep 03 2010 11:03:06
-rw- 3395 May 13 2013 13:07:13
startup.cfg
patch6613
system.xml
1