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DES-7200 Configuration Guide Chapter 5 System Upgrade Configuration
line cards may have the main program for line card. Generally, to have new features
of a device, you will need to upgrade the main program of the device. In order to
maintain the compatibility of BOOT, CTRL and Main programs, as well as the
compatibility of the Main program of management board and line card, the upgrade
function provides the guarantee to auto
matic compatibility. Incompatible parts will be
upgraded automatically without the need to download upgrade image separately.
ss, images incompatible with the new-version software will
automatically. Therefore, the upgrade information of such images will be
shown during the upgrade process.
5.1.1 Overview of Upgrade
F
During the upgrade proce
be upgraded
unction
5.1.1.1 Upgrading Image Set
Users generally expect to obtain a more reliable software version and more software
features through upgrade. In most cases, these features are related to the main
program. The device may contain multiple program images with different functions
(such as BOOT/
CTRL for booting), and these program images will only work in
Therefore, the upgrade file contains not only the main program for rendering primary
the BOOT/CTRL images used in conjunction with the main
program. When implementing upgrade, these images will be extracted from the
5.1.1.2
coordination. Therefore, the upgrade function not only provides the support to main
program upgrade, but also allows the automatic synchronized upgrade of respective
program images on the device, so that the overall device can maintain good
compatibility.
services, but also
upgrade file and upgrade the corresponding images on the device.
Auto-Installation
For devices like DES-7200, dynamic plug of linecards shall be supported. If the
embedded image version of linecard plugged is incompatible with that of the device,
the system will automatically upgrade the image of this linecard before it can wo
rk.
Some versions of line cards can automatically download image to run from the
board. This function avoids the need to consider the
compatibility between different linecards and the device. The system can well
5.1.1.3
master management
guarantee image compatibility and consistency without the intervention of user.
Operating Principle
The firmware image release for DES-7200 devices is a self-extracting executable
program. The firmware image carries the main program image for the device. For
cabinet devices, the firmware image contains main program and boot program; for
chassis devices, the firmware image contains the main program and boot program for
respective line cards.
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