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of the downloaded image file on system’s flash drive, and, optionally, compares it to a Dell EMC Networking published hash for
that file.
The MD5 or SHA256 hash provides a method of validating that you have downloaded the original software. Calculating the
hash on the local image file and comparing the result to the hash published for that file on iSupport provides a high level
of confidence that the local copy is exactly the same as the published software image. This validation procedure, and the
verify {md5 | sha256} command to support it, prevents the installation of corrupted or modified images.
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 iSupport. Optionally, you can include the published
hash in the verify {md5 | sha256} command, which displays whether it matches the calculated hash of the indicated file.
To validate a software image:
1. Download Dell EMC Networking OS software image file from the iSupport page to the local (FTP or TFTP) server. The
published hash for that file displays next to the software image file on the iSupport page.
2. Go on to the Dell EMC 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 is transferred to the system, but before you install the image,
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 uses the flash drive. You can enter the image file name.
● hash-value: (Optional). Specify the relevant hash published on iSupport.
● img-file: Enter the name of the Dell EMC Networking software image file to validate
Examples: Without Entering the Hash Value for Verification
MD5
DellEMC# verify md5 flash:file-name
SHA256
DellEMC# verify sha256 flash://file-name
Examples: Entering the Hash Value for Verification
MD5
DellEMC# verify md5 flash://file-name 275ceb73a4f3118e1d6bcf7d75753459
SHA256
DellEMC# verify sha256 flash://file-name
e6328c06faf814e6899ceead219afbf9360e986d692988023b749e6b2093e933
Using HTTP for File Transfers
Stating with Release 9.3(0.1), you can use HTTP to copy files or configuration details to a remote server. To transfer files to an
external server, use the copy source-file-url http://host[:port]/file-path command.
Enter the following source-file-url keywords and information:
● To copy a file from the internal FLASH, enter flash:// followed by the filename.
● To copy the running configuration, enter the keyword running-config.
Getting Started
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