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Software upgrade configuration
Device software overview
The device software comprises the Boot ROM and the system software images. After the device is
powered on, it runs the Boot ROM image, initializes hardware, and displays the hardware information.
Then the device runs the system software image, which provides drivers and adapters for hardware and
implements service features. The Boot ROM and system software images are required to start up and run
the device.
illustrates their relationship.
Figure 41
Relationship between the Boot ROM and the system software images
Software upgrade methods
You can upgrade both Boot ROM and system software at the Boot menu or at the command line interface
(CLI). The following sections cover how to upgrade them at the CLI. For instructions about how to upgrade
them at the Boot menu, see the release notes of your switch.
The upgrading at the CLI falls into the following categories:
Upgrade method
Upgrade object
Description
Software upgrade
through a system reboot
Boot ROM and
system software
•
You need to reboot the whole system to upgrade the
software of a device.
•
This causes running service interruption during the
upgrade process, and is not recommended.