Here's how to update SmartFabric OS10, on S and Z series switches configured as VLT peers. This method uses an FTP server to backup configurations to, and copy the OS image from.
Here's how to upgrade SmartFabric OS10 in a VLT environment, using an FTP server. This applies to S and Z Series switches only. For switches in an MX chassis check Dell.com/Support for help. You’ll need access to an FTP server, and the OS10 image. Download the image from your Dell My Account. For more information see KB Article 180674.
This is not a comprehensive guide. Before attempting an upgrade please read the 'Dell SmartFabric OS10 Installation, Upgrade, and Downgrade Guide' carefully. In particular, please review the sections on X509.v3 certificate expiry, and the supported upgrade paths.
If you're running 10.5.0.5 or earlier read this section If you're advertising BGP prefixes, read this one, and note there are model specific callouts for S4100 and S5200 switches. Before upgrading OS10, first upgrade the ONIE Software, then the Networking Firmware. These are available on Dell.com/Support.
Please remember there is always a risk of traffic loss during a VLT upgrade. We recommend scheduling a maintenance window to do this. Connect to each VLT peer using a terminal emulator, here we're using PuTTY. Before proceeding, save and backup your switch configurations.
On each peer, run 'write memory' to save the running configuration to the startup configuration. then use the 'copy' command to backup the 'startup.xml' file to your FTP server. Optionally, as an extra precaution, run 'show running-configuration | no-more', copy the output, and paste it into a text file on your workstation. Run the 'Image Install' command to install your image on the standby partition of each switch. Run 'show image status' to check the progress.
It usually takes around 30 minutes to complete. Upgrade one switch at a time starting with the secondary VLT peer, to minimize traffic disruption.
