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Appendix C
Turnup Process
The AT-iMG646 family of intelligent Multiservice Gateways are shipped
with both a main software image and a recovery software image. The
recovery software image is used in the case where the main image is
corrupted during download, for example, if the power is disconnected
during a software download. A default configuration file shipped on the
AT-iMG646 gateway instructs it to send a DHCP request on an untagged
VLAN and download a configuration file. The configuration file downloaded
from the network server includes information on the desired recovery
software and main software load. On bootup, the gateway checks the
stored configuration, downloads the network specific configuration file, and
upgrades both the recovery and main software load. The power up and
upgrade sequence is detailed in a separate turnup document. Please
contact your Allied Telesis sales representative for more information.
The gateway bootup sequence is:
Normal power up sequence
Upgrade the recovery software image (if required)
Upgrade the main software image (if required)
NMS services provisioning
This process is also shown in the flowchart on the next page.