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Upgrading software
Overview
Software upgrade enables you to add new features and fix bugs. This chapter describes types of
software and methods to upgrade software from the CLI without using ISSU. For a comparison of all
software upgrade methods, see "
When you upgrade software, you do not need to upgrade MPUs and interface cards separately. The
software images are integrated for MPUs and interface cards. The interface cards upgrade
automatically when you upgrade MPUs.
Software types
The following software types are available:
•
BootWare image
—Also called a Boot ROM image. This image is a .bin file that contains a
basic segment and an extended segment. The basic segment is the minimum code that
bootstraps the system. The extended segment enables hardware initialization and provides
system management menus. You can use these menus to load software and the startup
configuration file or manage files when the device cannot start up correctly.
•
Comware image
—Includes the following image subcategories:
Boot image
—A .bin file that contains the Linux operating system kernel. It provides process
management, memory management, file system management, and the emergency shell.
System image
—A .bin file that contains the Comware kernel and standard features,
including device management, interface management, configuration management, and
routing.
Feature image
—A .bin file that contains advanced software features. Users purchase
feature images as needed.
Patch image
—A .bin file irregularly released for fixing bugs without rebooting the device. A
patch image does not add new features or functions.
Comware images that have been loaded are called current software images. Comware images
specified to load at the next startup are called startup software images.
BootWare image, boot image, and system image are required for an MPU to operate. These images
might be released separately or as a whole in one .ipe package file. If an .ipe file is used, the system
decompresses the file automatically, loads the .bin images and sets them as startup software images.
Typically, the BootWare and startup software images for the device are released in an .ipe file named
main.ipe
.
Software file naming conventions
Software image file names use the
chassis-comware version-im
age
type-release
format, for
example, 10500-CMW710-SYSTEM-R7557P01.bin and 10500-CMW710-BOOT-R7557P01.bin.
This document uses
boot.bin
and
system.bin
as boot and system image file names.
Comware image redundancy and loading procedure
You can specify two lists of Comware software images: one main and one backup.
The system always attempts to start up with the main images. If any main image does not exist or is
invalid, the system tries the backup images.
shows the entire Comware image loading
procedure.
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