Users Guide
[12/5 10:57:12]: CMD-(CLI):line vty 0 9
[12/5 10:57:13]: CMD-(CLI):boot system rpm0 primary flash://FTOS-CB-1.1.1.2E2.bin
Upgrading Dell Networking OS
NOTE: To upgrade Dell Networking Operating System (OS), refer to the Release Notes for the version you want to load
on the system.
Using Hashes to Verify Software Images Before Installation
You can use the MD5 message-digest algorithm or SHA256 Secure Hash Algorithm to validate the software image on the ash
drive, after the image has been transferred to the system, but before the image has been installed. The validation calculates a hash
value of the downloaded image le on system’s ash drive, and, optionally, compares it to a Dell Networking published hash for that
le.
The MD5 or SHA256 hash provides a method of validating that you have downloaded the original software. Calculating the hash on
the local image le, and comparing the result to the hash published for that le on iSupport, provides a high level of condence 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, can prevent the installation of corrupted or modied images.
The verify {md5 | sha256} command calculates and displays the hash of any le on the specied local ash 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 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 is displayed 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} [ ash://]img-le [hash-value] command. For example, verify sha256 ash://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 has been transferred to the system, but before the image has been
installed, use the verify {md5 | sha256} [ ash://]img-le [hash-value] command in EXEC mode.
• md5: MD5 message-digest algorithm
• sha256: SHA256 Secure Hash Algorithm
• ash: (Optional) Species the ash drive. The default is to use the ash drive. You can just enter the image le name.
• hash-value: (Optional). Specify the relevant hash published on i-Support.
• img-le: Enter the name of the Dell Networking software image le to validate
Examples: Without Entering the Hash Value for Verication
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 Verication
Getting Started
55