Alcatel-Lucent OmniSwitch 9000 Series, Руководство по началу работы

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May 2007 Files and Directories 31
Working and Certified
Directories
Switches are shipped with 128 MB of flash memory. This
memory is used to store files, including boot and image files
that are used for switch operations.
The /flash directory contains two subdirectories: /working and
/certified . These directories work together to provide the
image rollback resiliency feature. Image rollback allows the
switch to return to a prior “last known good” version of soft-
ware in the event of a system software problem.
Working
Dire
ctory
The /flash/working directory is intended for software that is
still being configured for your network. Changes made while
configuring your switch are saved to the
boot.cfg file in the
/flash/working directory.
Once the /flash/working directory’s configuration and image
files are road-tested and considered valid and reliable for your
network, they can be copied to the
/flash/certified directory.
Certified Directory
The software in the /flash/certified directory should be treated
as the “gold master” for the switch. When you place configu-
ration and image files in this directory, you are “certifying”
them as tested and reliable. If the switch is running from the
/flash/working directory and experiences a software problem,
it will “roll back” to the last known good software in the
/flash/certified directory on the next reboot.
Working Directory
Intended for: Files that are being configured
and tested. Once these files are considered
valid and reliable, they can be copied to
the Certified directory.
On reload: If the Working and Certified
directories are identical, the switch will
automatically run from software in this
directory. If the two directories are not
identical, you can instruct the switch to run
from the Working directory by issuing the
reload working command.
Saving changes: You can save config-
uration changes to the Working directory
via the
write memory command.
Certified Directory
Intended for: Reliable, Tested configuration
and image files. The switch will roll back
to this software in the event of a system
software error.
On reload: By default, the switch will use
the software in this directory if there are
any differences between the Working and
Certified directories.
Saving changes: You cannot save config-
uration changes to the Certified directory.
To save your changes, be sure that your
switch is operating from the Working
directory.