View Command History; Upgrading Dell Networking Os; Verify Software Images Before Installation - Dell S4048–ON Configuration Manual

Example of show feature output
For a particular target where VRF is enabled, the show output is similar to the following:
Feature State
------------------------
VRF Enabled

View Command History

The command-history trace feature captures all commands entered by all users of the system with a time stamp and writes these
messages to a dedicated trace log buffer.
The system generates a trace message for each executed command. No password information is saved to the file.
To view the command-history trace, use the show command-history command.
Example of the show command-history Command
Dell#show command-history
[12/5 10:57:8]: CMD-(CLI):service password-encryption
[12/5 10:57:12]: CMD-(CLI):hostname Force10
[12/5 10:57:12]: CMD-(CLI):ip telnet server enable
[12/5 10:57:12]: CMD-(CLI):line console 0
[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.

Verify Software Images Before Installation

To validate the software image on the flash drive, you can use the MD5 message-digest algorithm or SHA256 Secure Hash Algorithm, after
the image is transferred to the system but before the image is installed. The validation calculates a hash value of the downloaded image file
on system's flash drive, and, optionally, compares it to a Dell 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 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 Networking system and copy the software image to the flash drive, using the copy command.
3 Run the verify {md5 | sha256} [ flash://]img-file
flash://FTOS-SE-9.5.0.0.bin
4 Compare the generated hash value to the expected hash value published on the iSupport page.
[hash-value] command. For example, verify sha256
Getting Started 59