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5-13
Switch Memory and Configuration
Using Primary and Secondary Flash Image Options
Switch Memory and
Configuration
Figure 5-6. Example Showing the Identity of the Current Flash Image
Determining Whether the Flash Images Are Different Versions. If the
flash image sizes in primary and secondary are the same, then in almost every
case, the primary and secondary images are identical. This command provides
a comparison of flash image sizes, plus the boot ROM version and from which
flash image the switch booted. For example, in the following case, the images
are different versions of the OS software (flash image) and the switch is
running on the version stored in the secondary flash image:
Figure 5-7. Example Showing Different Flash Image Versions
Determining Which Flash Image Versions Are Installed. The
show ver-
sion
command displays which software version the switch is currently running
and whether that version booted from primary or secondary flash. Thus, if the
switch booted from primary flash, you will see the version number of the OS
image stored in primary flash, and if the switch booted from secondary flash,
you will see the version number of the OS version stored in secondary flash.
Thus, by using show version, then rebooting the switch from the opposite flash
image and using show version again, you can determine the version of the OS
image in both flash sources. For example:
The unequal code
size indicates two
different versions of
the OS software.