Cisco Cisco IOS XE 3.5E
How to Work with Digitally Signed Cisco Software Images
Identifying Digitally Signed Cisco Software
Perform this task to identify digitally signed Cisco software by examining the image filename in the command output from the show
version command, and judging it on the criteria described in the “Digitally Signed Cisco Software Identification” section.
version command, and judging it on the criteria described in the “Digitally Signed Cisco Software Identification” section.
If the image file has been renamed by the user, it may not be possible to identify the image because the
user may have overwritten the criteria used to indicate that the image is digitally signed.
user may have overwritten the criteria used to indicate that the image is digitally signed.
Note
Procedure
Purpose
Command or Action
Enables privileged EXEC mode.
enable
Step 1
Example:
Device> enable
• Enter your password if prompted.
Displays information about the Cisco IOS software version running on a
routing device, the ROM Monitor and Bootflash software versions, and
the hardware configuration, including the amount of system memory.
routing device, the ROM Monitor and Bootflash software versions, and
the hardware configuration, including the amount of system memory.
show version
Example:
Device# show version
Step 2
Displaying Digitally Signed Cisco Software Signature Information
Perform this task to display information related to software authentication for the current ROMmon and the Cisco IOS image file
used for booting. The display includes image credential information, the key type used for verification, signature information, and
other attributes in the signature envelope.
used for booting. The display includes image credential information, the key type used for verification, signature information, and
other attributes in the signature envelope.
Procedure
Purpose
Command or Action
Enables privileged EXEC mode.
enable
Step 1
Example:
Device> enable
• Enter your password if prompted.
6