GE D20MX, Руководство пользователя

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68 GE INFORMATION D20MX HARDWARE USER’S MANUAL
CHAPTER 5: CONFIGURING THE SOFTWARE
27. If the D20MX was configured for device redundancy, you may switch over the D20MX
and repeat the above steps for the other unit.
Configuration file
download
You can use standard SGConfig procedures to download a configuration file over the
network.
Firmware integrity
Version 1.10 of the D20MX firmware introduced a Firmware Integrity checking mechanism.
This mechanism consists of a Primary and Secondary storage system, internal to the
D20MX, for the firmware files and an MD5 checksum on the individual firmware files.
Version 1.20 of the D20MX firmware adds the two D20M Shell commands:
commit and
revert . These commands copy the firmware files from the Primary storage to the
Secondary (commit), or from the Secondary to the Primary (revert).
The D20MX determines which set of files (Primary or Secondary storage) to use when
starting up by:
1.
Testing the integrity of the D20MX firmware files in the Primary storage.
2. If the integrity check of the Primary storage files Is valid, the D20MX starts up with the
Primary storage files.
3. If the integrity check of the Primary storage files fails, the D20MX tests the integrity of
the firmware files in the Secondary.
4. If the integrity of the Secondary storage files is valid, the D20MX starts up with
Secondary storage files.
5. If the integrity of the Secondary storage files fails, the D20MX defaults to the Boot
ROM command prompt.
Committing new firmware
After new firmware has been downloaded (either via serial or network connection), and the
D20MX has restarted and is operating correctly, the firmware must be “committed” to the
secondary storage.
Once the firmware has been committed, it cannot be reverted; see Section: Reverting old
firmware.
To commit new firmware:
1.
Login as a user that has Maintenance or Read/Write access privileges.
2. Enter the D20M Shell.
3. Enter the commit command.
Result: A prompt appears to confirm copying the firmware from Primary to Secondary.
4. Enter yes to confirm the copy operation. If anything else is entered, the command is
canceled.
Result: The firmware copy operation begins. Both 'vxworks' and 'appl.out' are copied.
This operation takes approximately 3 minutes.
DO NOT shut off the power to the D20MX while the copy operation is in progress. If power
to the D20MX is disrupted, during the copy operation, the firmware will likely be corrupted.