File Download Sequence - AudioCodes Mediant 4000 SBC User Manual

User's Manual
Note:
•
For one-time file download, the HTTP Get request sent by the device does not
include the If-Modified-Since header. Instead, the HTTP-User-Agent header can
be used in the HTTP Get request to determine whether firmware update is
required.
•
When downloading SSL certificate files, it is recommended to use HTTPS with
mutual authentication for secure transfer of the SSL Private Key.
•
After the device downloads the License Key file (FeatureKeyURL), it checks that
the serial number in the file ("S/N <serial number>") is the same as that of the
device. If the serial number is the same and the license key is different to the one
currently installed on the device, it applies the new License Key. For devices in HA
mode, the License Key is applied to both active and redundant units.
5. If the device receives an HTTP 301/302/303 redirect response from the provisioning
server, it establishes a connection with the new server at the redirect URL and re-
sends the HTTP Get request.

39.2.8 File Download Sequence

Whenever the Automatic Update feature is triggered (see ''Triggers for Automatic Update''
on page 601), the device attempts to download each file from the configured URLs, in the
following order:
1. ini file
2. CLI Script file
3. Periodic software file (.cmp) download
4. One-time software file (.cmp) download
5. Auxiliary file(s)
The following files automatically instruct the device to reset:

Periodic software file (.cmp)

One-time software file (.cmp)
When multiple files requiring a reset are downloaded, the device resets only after it has
downloaded and installed all the files. However, you can explicitly instruct the device to
immediately reset for the following files:

ini file: Use the ResetNow in file parameter

CLI Script file: Use the reload if-needed CLI command
Warning: If you use the ResetNow parameter in an ini file for periodic automatic
provisioning with non-HTTP (e.g., TFTP) and without CRC, the device resets after
every file download. Therefore, use the parameter with caution and only if necessary
for your deployment requirements.
Version 7.2 605
39. Automatic Provisioning
Mediant 4000 SBC