C-75
Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2
OL-29168-01
Appendix C Troubleshooting
Gathering Information
Understanding the show tech-support Command
Note
The /var/log/messages file is now persistent across reboots and the information is displayed in the output
of the show tech-support command.
Note
The show tech-support command now displays historical interface data for each interface for the past
72 hours.
The show tech-support command captures all status and configuration information on the sensor and
includes the current configuration, version information, and cidDump information. The output can be
large, over 1 MB. You can transfer the output to a remote system. For the procedure for copying the
output to a remote system, see Displaying Tech Support Information, page C-75.
Note
Always run the show tech-support command before contacting TAC.
Displaying Tech Support Information
Use the show tech-support [page] [destination-url destination_url] command to display system
information on the screen or have it sent to a specific URL. You can use the information as a
troubleshooting tool with TAC.
The following parameters are optional:
•
page—Displays the output, one page of information at a time. Press Enter to display the next line
of output or use the spacebar to display the next page of information .
•
destination-url—Indicates the information should be formatted as HTML and sent to the
destination that follows this command. If you use this keyword, the output is not displayed on the
screen.
•
destination_url—Indicates the information should be formatted as HTML.The URL specifies where
the information should be sent. If you do not use this keyword, the information is displayed on the
screen.
•
You can specify the following destination types:
–
ftp:—Destination URL for FTP network server. The syntax for this prefix is:
ftp:[[//username@location]/relativeDirectory]/filename
or
ftp:[[//username@location]//absoluteDirectory]/filenam e
.
–
scp:—Destination URL for the SCP network server. The syntax for this prefix is:
scp:[[//username@]location]/relativeDirectory]/filenam e
or
scp:[[//username@]location]//absoluteDirectory]/filena me
.
Displaying Tech Support Information
To display tech support information, follow these steps:
Step 1
Log in to the CLI using an account with administrator privileges.
Step 2
View the output on the screen. The system information appears on the screen, one page at a time. Press
the spacebar to view the next page or press Ctrl-C to return to the prompt