Users Guide

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 modied images.

The verify {md5 | sha256} command calculates and displays the hash of any le on the specied local ash 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 le.

To validate a software image:

1 Download Dell Networking OS software image le from the iSupport page to the local (FTP or TFTP) server. The published hash for

that le displays next to the software image le on the iSupport page.

2 Go on to the Dell Networking system and copy the software image to the ash 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 ash 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) Species the ash drive. The default uses the ash drive. You can enter the image le name.

• hash-value: (Optional). Specify the relevant hash published on iSupport.

• img-file: Enter the name of the Dell Networking software image le to validate

Examples: Without Entering the Hash Value for Verication

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 Verication

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

Using HTTP for File Transfers

Stating with Release 9.3(0.1), you can use HTTP to copy les or conguration details to a remote server. To transfer les to an external

server, use the copy source-le-url http://host[:port]/le-path command.

Enter the following source-le-url keywords and information:

• To copy a le from the internal FLASH, enter ash:// followed by the lename.

Getting Started