ExtremeWare XOS 11.3 Concepts Guide
591
A Software Upgrade and Boot Options
This appendix describes the following topics:
● Downloading a New Image on page 591
● Understanding Hitless Upgrade—BlackDiamond 10K Switch Only on page 597
● Saving Configuration Changes on page 601
● Using TFTP to Upload the Configuration on page 603
● Using TFTP to Download the Configuration on page 603
● Synchronizing MSMs—Modular Switches Only on page 604
● Accessing the Bootloader on page 605
● Upgrading the BootROM—BlackDiamond 10K Switch Only on page 606
● Upgrading the BootROM—Summit X450 Switch Only on page 606
● Upgrading the Firmware—BlackDiamond 8800 Family of Switches Only on page 607
Downloading a New Image
The core image file contains the executable code that runs on the switch and is preinstalled at the
factory. As new versions of this image are released, you should upgrade the software running on your
system. Modular software packages enhance the functionality of the ExtremeWare XOS core image
currently running on your switch. Modular software packages are not preinstalled at the factory.
On the BlackDiamond 10K switch, you can upgrade the images without taking the switch out of service
or interrupting network operation. This is known as hitless upgrade. For more information, see
“Understanding Hitless Upgrade—BlackDiamond 10K Switch Only” on page 597.
This section describes the following topics:
● Image Filename Prefixes on page 591
● Understanding the Image Version String on page 592
● Software Signatures on page 592
● Selecting a Primary or a Secondary Image on page 593
● Installing a Core Image on page 593
● Installing a Modular Software Package on page 594
● Rebooting the Switch on page 596
● Rebooting the Management Module—Modular Switches Only on page 597
Image Filename Prefixes
The software image file can be a .xos file, which contains an ExtremeWare XOS core image, or a .xmod
file, which contains an ExtremeWare XOS modular software package.
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