Owner's Manual

Appendix B. Software Upgrade and Boot Options | 803
NETGEAR 8800 User Manual
Understanding the Image Version String
The image version string contains build information for each version of XCM8800. You can
use either the
show version or show switch command to display the XCM8800 version
running on your switch.
Depending on the command line interface (CLI) command, the output is structured as
follows:
• show version
XCM8800 Version <major>.<minor>.<patch>.<build>
For example: XCM8800 version 10.1.2.16
• show switch
<major>.<minor>.<patch>.<build>
For example: 10.1.2.16
Table 77 describes the image version fields.
The show version command also displays information about the firmware (BootROM) images
running on the switch. For more information, see
Displaying the BootROM and Firmware
Versions on page 828.
Software Signatures
Each XCM8800 image contains a unique signature. The BootROM checks for signature
compatibility and denies an incompatible software upgrade. In addition, the software checks
both the installed BootROM and software and also denies an incompatible upgrade.
Selecting a Primary or a Secondary Image
A switch can store up to two core images: a primary and a secondary. When downloading a
new image, you select which partition (primary or secondary) to install the new image. You
must install the software image to the alternate partition, and must specify that partition
before downloading the image.
Table 77. Image Version Fields
Field Description
major Specifies the XCM8800 major version number.
minor Specifies the XCM8800 minor version number.
patch Identifies a specific patch release.
build Specifies the XCM8800 build number. This value is reset to 0 for each new major and
minor release.