.. code-block:: json

    { "ospf": { "external": { "connections": [] } } }

+-----------------------------------+--------------------------------------------------------------------+
| Attribute                         | Description                                                        |
+===================================+====================================================================+
| **router-id**                     | | Mandatory remote router identifier.                              |
+-----------------------------------+--------------------------------------------------------------------+
| **metric**                        | | Optional interface metric.                                       |
|                                   | | Default: 10 Range: 0 - 4294967295                                |
+-----------------------------------+--------------------------------------------------------------------+
| **local-ipv4-address**            | | Mandatory local IPv4 address (OSPFv2 only).                      |
+-----------------------------------+--------------------------------------------------------------------+
| **local-interface-id**            | | Local interface identifier (OSPFv3 only).                        |
|                                   | | Default: 1 (2, 3, ...)                                           |
+-----------------------------------+--------------------------------------------------------------------+
| **neighbor-interface-id**         | | Remote interface identifier (OSPFv3 only).                       |
|                                   | | Default: `local-interface-id`                                    |
+-----------------------------------+--------------------------------------------------------------------+
