Backing Up And Restoring The System - D-Link DWS-1008 - AirPremier MobileLAN Switch Product Manual

Backing Up and Restoring the System

MSS has commands that enable you to easily backup and restore system and user files:
backup system [tftp:/ip-addr/]filename [all | critical]
restore system [tftp:/ip-addr/]filename [all | critical] [force]
The backup command creates an archive in Unix tape archive (tar) format. The restore command
unzips an archive created by the backup command and copies the files from the archive onto the switch.
If a file in the archive has a counterpart on the switch, the archive version of the file replaces the file on
the switch. The restore command does not delete files that do not have counterparts in the archive. For
example, the command does not completely replace the user files area. Instead, files in the archive are
added to the user files area. A file in the user area is replaced only if the archive contains a file with the
same name.
You can create or unzip an archive located on a TFTP server or in the switch's nonvolatile storage. If you
specify a TFTP server as part of the filename with the backup command, the archive is copied directly
to the TFTP server and not stored locally on the switch.
Both commands have options to specify the types of files you want to back up and restore:
• critical—Backs up or restores system files, including the configuration file used when
booting, and certificate files. The size of an archive created by this option is generally 1MB
or less. This is the default for the restore command.
• all—Backs up or restores the same files as the critical option, and all files in the user files
area of nonvolatile storage. (The user files area contains the set of files listed in the file
section of dir command output.) Archive files created by the all option are larger than files
created by the critical option. The file size depends on the files in the user area, and the file
can be quite large if the user area contains image files. This is the default for the backup
command.
Note: If the archive's files cannot fit on the switch, the restore operation fails. D-link recommends
deleting unneeded image files before creating or restoring an archive.
Use the critical option if you want to back up or restore only the system-critical files required to operate
and communicate with the switch. Use the all option if you also want to back up or restore WebAAA
pages, backup configuration files, image files, and any other files stored in the user files area of
nonvolatile storage.
The maximum supported file size is 32 MB. If the file size of the tarball is too large, delete unnecessary
files (such as unneeded copies of system image files) and try again, or use the critical option instead
of the all option.
Neither option archives image files or any other files listed in the Boot section of dir command output.
The all option archives image files only if they are present in the user files area.
The backup command stores the MAC address of the switch in the archive. By default, the restore
command works only if the MAC address in the archive matches the MAC address of the switch where
the restore command is entered. The force option overrides this restriction and allows you to unpack
one switch's archive onto another switch.
D-Link DWS-1008 User Manual 11