Dell C9000 Series Networking Configuration Manual page 92

The verify {md5 | sha256} command calculates and displays the hash of any file on the specified local flash
drive. You can compare the displayed hash against the appropriate hash published on i-Support. Optionally,
the published hash can be included in the verify {md5 | sha256} command, which will display whether it
matches the calculated hash of the indicated file.
To validate a software image:
1 Download Dell Networking OS software image file from the iSupport page to the local (FTP or TFTP)
server. The published hash for that file is displayed next to the software image file on the iSupport page.
2 Go on to the Dell Networking system and copy the software image to the flash drive, using the copy
command.
3 Run the verify {md5 | sha256} [ flash://]img-file [hash-value] command. For example, verify sha256
flash://FTOS-SE-9.5.0.0.bin
4 Compare the generated hash value to the expected hash value published on the iSupport page.
To validate the software image on the flash drive after the image has been transferred to the system, but
before the image has been installed, use the verify {md5 | sha256} [ flash://]img-file [hash-value] command
in EXEC mode.
• md5: MD5 message-digest algorithm
• sha256: SHA256 Secure Hash Algorithm
• flash: (Optional) Specifies the flash drive. The default is to use the flash drive. You can just enter the
image file name.
• hash-value: (Optional). Specify the relevant hash published on i-Support.
• img-file: Enter the name of the Dell Networking software image file to validate
Examples: Without Entering the Hash Value for Verification
MD5
Dell# verify md5 flash://FTOS-SE-9.5.0.0.bin
MD5 hash for FTOS-SE-9.5.0.0.bin: 275ceb73a4f3118e1d6bcf7d75753459
SHA256
Dell# verify sha256 flash://FTOS-SE-9.5.0.0.bin
SHA256 hash for FTOS-SE-9.5.0.0.bin:
e6328c06faf814e6899ceead219afbf9360e986d692988023b749e6b2093e933
Examples: Entering the Hash Value for Verification
MD5
Dell# verify md5 flash://FTOS-SE-9.5.0.0.bin 275ceb73a4f3118e1d6bcf7d75753459
MD5 hash VERIFIED for FTOS-SE-9.5.0.0.bin
SHA256
Dell# verify sha256 flash://FTOS-SE-9.5.0.0.bin
e6328c06faf814e6899ceead219afbf9360e986d692988023b749e6b2093e933
SHA256 hash VERIFIED for FTOS-SE-9.5.0.0.bin
Switch Management 92