Upgrading MLNX-OS Software on Modular Switches
Modular switches feature dual management modules.
- Identify the chassis HA master. Run: - show chassis ha 
- Upgrade the chassis master according to steps 1-8 in “Upgrading Operating System Software”. Please DO NOT reboot! 
- Upgrade the second management module according to steps 1-8 in “Upgrading Operating System Software”. Please DO NOT reboot! 
- Reset the slave management module. In the master management module, run: - chassis ha reset other 
- After invoking the command above, please reboot the master management immediately. Run: - reload force immediate Warning- An alternative for steps 4 and 5 is to power cycle the system. 
- Check that “reset count” equals 0 or 1. Run: - show chassis ha - If the reset count is not equal to either 0 or 1, power cycle the system. 
- Verify all the systems are back online as members of the IB subnet ID. Run: - show ib smnodes {brief} Warning- Using a modular switch with different software versions on its two management boards is not supported. - When replacing a management board the software running on the replacement board must be aligned with the version of the software running on the other management board.