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Installation configuration profiles
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Each installation method offers the following options for imaging nodes.
These options mainly control networking configuration for the
provisioning process.

The installation profiles are:

#. **Image with node key (ZTP)**: This method installs Debian Linux and
   SD-WAN, wiping anything currently on the device's hard disk. To use this
   method, the network must be connected to the first Ethernet port
   (eth0) and should offer configuration via DHCP. It prompts for the
   node key to identify the device to the management server. This is the
   recommended option for bonders. After provisioning with this mode,
   the node will be configured with the 10.207.35.254/29 IP address on
   its eth0 interface, as described in `Accessing a
   node <../accessing-a-node.html>`__.
#. **Image without node key**: This method is similar to the first
   except it does not prompt for the node key. Instead, it configures
   the device as a `default
   bonder <configuring-default-bonder-via-web-service.html>`__.
#. **Static IP (Aggregator)**: This method also installs Debian Linux and
   SD-WAN and overwrites the contents of the hard disk. However, it
   asks a number of questions about the local network configuration, such as
   which interface to use, the IP address and gateway, and DNS server. This is
   the recommended option for aggregators and private WAN routers, since they
   are usually configured with a static IP address. After provisioning with
   this mode, the node will be configured to run with the IP settings used
   during the provisioning process.

.. note::

    All of these options do not ask before overwriting the hard disk.
