- Although you can store two loadware images on the IP gateway HG3575,
only one of these is the "golden load" that is loaded after a cold start
(power off).
- Loadware ID check
-
A loadware ID check is performed every time the HG3575 is started and
compares the board loadware that is being downloaded with the loadware
version on the hard disk (:PDS:APSP/LTG/LGA0/PZKNCI40).
If the result of the check is negative, that is, if there is a discrepancy
with the loadware stored on the HD, then the loadware is transferred
from the HD to the NCUI via FTP and then installed/restarted.
- Installation of NCUI loadware (PZKNCUI40)
-
A NCUI loadware (PZKNCUI40) loaded/transfered in the background will
be installed with a warm boot.
This warm boot can be started with the following actions/events:
- Deactivate/activate with AMO USSU (
DEACTIVATE-USSU/ACTIVATE-USSU).
- Restart of the access point with
EXEC-USSU:UPDATAP,<ap-number>;.
New configuration data will be loaded to the access point and a warm
boot will be initiated.
- New startup after loadware transfer (initiated through negative LW
ID check during startup).
- after connection failure in TCP (ALVTIME).
- Golden loadware check
-
In HG 3575, the latest loadware to be downloaded is called "golden loadware"
(as-delivered NCUI2+/NCUI4 boards include loadware in the flash memory).
The golden loadware check is always performed after new loadware is
downloaded/restarted (loadware upgrade/loadware ID check negative). If
this check is successful, the download pointer is rewritten as appropriate
so that the golden loadware corresponds to the new loadware.
