====== Backup features ======

The SPN web interface allows to backup the SPN configuration files:

  * Global SPN configuration (channels, interfaces, network configuration...)

Go to the "Administration/Main configuration" page and click on download configuration. A file ''xxxxxxxx_data.json'' will be downloaded.
This file can be imported to recover the SPN configuration or to configure another SPN gateway.

{{:images:global_conf.png?900|}}

  * End-device fleet

Go to the "Manage end-devices" page and click on download end-devices. A file ''xxxxxxxx_end_device_fleet.csv'' will be downloaded.
This file can be imported to recover the SPN end-device fleet or to configure another SPN gateway.

{{:images:enddevice_fleet.png?400|}}

  * Master SPN slave gateway list

In case the gateway has a Master license, the slave gateway list can be backuped. Go to the "Multi-gateways/Gateways" page and click on download. A file ''xxxxxxxx_gateway_fleet.csv'' will be downloaded.
This file can be imported to recover the SPN slave gateway list of a Master SPN gateway.

{{:images:masterfleet.png?900|}}


<note important>
The SPN can't save and restore:
  * The end-devices activation keys (NWKSKEY, APPSKEY, and DEVADDR) of OTAA activated devices.
  * Uplink counter, downlink counter, and ADR flag of all devices.

To avoid issues in case of gateway failure, those recommendations can be followed:
  * Both ABP and OTAA activated end-devices should check downlink communication regularly.
  * When the downlink communication is missing, end-devices should stop normal operation and try to recover the link with the SPN.
    * By trying to rejoin the network with join requests for OTAA end-devices. \\
    * By resetting the uplink/downlink counters and checking that the downlink direction is working again for ABP end-devices.   
</note>