Upgrading MCT Clusters to SLX-OS 20.1.1 and Later

Use one of the MCT (Multiple Chassis Trunking) upgrade procedures to upgrade MCT cluster nodes with minimal traffic loss.

The format of the SLX-OS 20.1.1 and later startup-config has changed from the earlier releases. You can upgrade MCT clusters and preserve your MCT configuration in one of the following scenarios:
Important

Important

MCT configuration is not preserved if you upgrade clusters from any release other than 18r.2.00b or the 20.1.1 controlled release. For such upgrades, you have the following options:
  • Upgrade your clusters to 18r.2.00b, and then upgrade to 20.1.1 or later using the script that preserves your MCT configuration.
  • Upgrade to 20.1.1 or later and manually create the MCT startup-config after upgrade.