Configuration manual

• dynamic — contains files used by the B5800 Branch Gateway and retained through a reboot of the
B5800 Branch Gateway system.
• temp — contains temporary files used by the B5800 Branch Gateway and not retained through a
reboot of the B5800 Branch Gateway system.
The Optional SD card can contain a similar set of folders as the System SD card. The Optional SD card
folders are used as an additional backup or they can be used as the source for upgrading the contents of
the System SD card.
Booting from the SD cards
When being powered up, the control unit looks for a valid .bin binary file to load. It does this
using the possible source below in the order shown, skipping to the next source if the file is
not present or is not valid.
1. System SD card primary folder.
2. The control unit's own internal non-volatile memory. Once a system has been
installed, it uses its non-volatile memory to keep copies of the configuration and
system binary files it is using. These can be used to restore operation during a
system reboot. Note that though a system can boot from non-volatile memory, a
System SD card must still be present for correct system operation.
3. System SD card backup folder.
4. Optional SD card primary folder.
5. Optional SD card backup folder.
6. If no file is found, the control unit will fallback to making BOOTP requests to the
network. Manager can respond to the BOOTP request. See
About erasing the
operational firmware on page 237 for more information.
Once a valid .bin file is found, the control unit loads that firmware. The source from which the
control unit binary file was loaded is then used to load further files.
Configuration file loading
After the system firmware files are installed, a configuration file must be installed on the control
unit.
• If the control unit booted using binary files from an SD card location, it looks for a valid
configuration file in the same location.
- If a configuration file is present and valid, it is loaded.
- If a configuration file is present but is not valid, load the configuration copy in its non-
volatile memory if present. Otherwise, the control unit will have a default
configuration.
SD card management
246 Implementing B5800 Branch Gateway for a CS 1000 Configuration October 2012
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