Article Number: 000181434
Dell Networking How to Verify the Checksum of the OS10 Firmware Image Downloaded for Dell Networking Switches
Summary: This article explains how to verify the checksum of the firmware image downloaded into the DELL Networking OS10 switch.
Article Content
Instructions
Table of Contents
Why Checksum is Required.Where to Find the sha256 Checksum File
Where to Find the Downloaded Image File in Switch
Calculating Checksum of the File Downloaded
Method 1: In OS10 CLI Using “image verify" Command [10.5 and Above]
Method 2: In OS10 CLI Using sha256sum Command
Method 3: In Shell Using sha256sum Command
Why Check Sum Is Required
A file may become corrupted during transfer. We can use checksum to check data integrity of a file. Checksum is a number generated from the file using a checksum algorithm like md5, SHS224, SHA256. An SHA256 Checksum file is included with the OS10 package which can be used to check data integrity of the file downloaded to the switch.
Where to Find the SHA256 Checksum File
The Checksum of every firmware version is different. Check in the Installation package for the Checksum File.
An example is highlighted below.
Open the File in Notepad or any similar utility. There will be a 64-character string. This 64-character string must match with the output of Hash of the image downloaded to the image.
Sample output
Below is the SHA256 file opened in Notepad.
.
Here the Checksum value is d69dd152db027cb81b80be5a1f4b6e5c63e2d187d5c0e9f73e2d6d1a3b9c6d57. This must match the downloaded files calculated checksum value.
Where to Find the Downloaded Image File in Switch
While doing the firmware upgrade of OS10 we use the command "image download" to download the software image to the switch from TFTP, FTP, SCP, HTTP, or USB. This file is downloaded to the /var/os10-image folder.
We can view the file downloaded to the switch by using command "dir image"
Sample Output
Switch# dir image Directory contents for folder: image Date (modified) Size (bytes) Name --------------------- ------------ ------------------------------------------ 2020-12-18T12:54:51Z 477981208 PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin |
Calculating Checksum of the File Downloaded
We can calculate the SHA256 checksum of the downloaded file by any of the methods mentioned below.
Method 1: In OS10 CLI Using Command "Image Verify" Command [OS 10.5 and Above]
Command Syntax| Command |
Explanation |
|---|---|
Switch# image verify image://<image name> sha256 |
Command to calculate the sha256 checksum of the file. |
Sample Output
Switch# image verify image://PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin sha256 Hash of image: d69dd152db027cb81b80be5a1f4b6e5c63e2d187d5c0e9f73e2d6d1a3b9c6d57 |
Method 2: In OS10 CLI Using SHA256sum Command
Command Syntax
Use of tab will not autofill the "system" commands.
| Command |
Explanation |
|---|---|
Switch# system “ls /var/os10-image/” |
Verify that the downloaded file is present in the folder /var/os10-image/ |
Switch# system "sha256sum /var/os10-image/<image file name>" |
Command to calculate the sha256 checksum of the file. |
Sample output
Switch# system “ls /var/os10-image/” PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin ========>Verify file name Switch# system "sha256sum /var/os10-image/</PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin" d69dd152db027cb81b80be5a1f4b6e5c63e2d187d5c0e9f73e2d6d1a3b9c6d57 /var/os10-image/PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin ========>Verify the checksum with the checksum in file |
Method 3: In Shell Using Sha256sum Command
Command Syntax
| Command |
Explanation |
|---|---|
Switch# system bash |
Log in to Shell, We have to provide an admin password. |
admin@Switch:~$ ls /var/os10-image/ |
Verify that the downloaded file is present in the folder /var/os10-image/ |
admin@Switch/var/os10-image$ sha256sum /var/os10-image/<image file name> |
Command to calculate the sha256 checksum of the file. |
admin@Switch/var/os10-image$ exit |
Exit |
Sample output
Switch# system bash ============>Provide admin password when prompted admin@Switch:~$ ls /var/os10-image/ PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin ========>Verify file name admin@Switch:~$ sha256sum /var/os10-image/PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin d69dd152db027cb81b80be5a1f4b6e5c63e2d187d5c0e9f73e2d6d1a3b9c6d57 /var/os10-image/PKGS_OS10-Enterprise-10.5.0.7.745stretch-installer-x86_64.bin ========>Verify the checksum with the checksum in file |
Article Properties
Affected Product
S Series, PowerSwitch S3048-ON, PowerSwitch S4048-ON, PowerSwitch S4810P, PowerSwitch S4810-ON, PowerSwitch S4820T, PowerSwitch S5000, PowerSwitch S6000 ON, Dell EMC Networking MX7116n, Dell EMC Networking MX9116n, Dell EMC Networking N3200-ON
, PowerSwitch S4048T-ON, PowerSwitch S4112F-ON/S4112T-ON, PowerSwitch S4128F-ON/S4128T-ON, PowerSwitch S4148F-ON/S4148T-ON/S4148FE-ON, PowerSwitch S4148U-ON, PowerSwitch S4248FB-ON /S4248FBL-ON, PowerSwitch S5048F-ON, PowerSwitch S5148F-ON, PowerSwitch S5212F-ON, PowerSwitch S5224F-ON, PowerSwitch S5232F-ON, PowerSwitch S5248F-ON, PowerSwitch S5296F-ON, PowerSwitch S6010-ON, PowerSwitch S6100-ON, PowerSwitch Z9100-ON, PowerSwitch Z9264F-ON, PowerSwitch Z9332F-ON
...
Product
PowerSwitch S4128F-ON/S4128T-ON, PowerSwitch S4148F-ON/S4148T-ON/S4148FE-ON, PowerSwitch S4148U-ON, PowerSwitch S4248FB-ON /S4248FBL-ON, PowerSwitch S5212F-ON, PowerSwitch S5224F-ON, PowerSwitch S5232F-ON, PowerSwitch S5248F-ON, PowerSwitch S5296F-ON
, PowerSwitch S5448F-ON, PowerSwitch Z9100-ON, PowerSwitch Z9264F-ON, PowerSwitch Z9332F-ON, PowerSwitch Z9432F-ON, PowerSwitch Z9664F-ON
...
Last Published Date
20 Feb 2024
Version
7
Article Type
How To