.. code-block:: json

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

+-----------------------------------+----------------------------------------------------------------------+
| Attribute                         | Description                                                          |
+===================================+======================================================================+
| **system-id**                     | | ISIS system identifier.                                            |
+-----------------------------------+----------------------------------------------------------------------+
| **l1-metric**                     | | ISIS level 1 interface metric.                                     |
|                                   | | Default: 10                                                        |
+-----------------------------------+----------------------------------------------------------------------+
| **l2-metric**                     | | ISIS level 2 interface metric.                                     |
|                                   | | Default: 10                                                        |
+-----------------------------------+----------------------------------------------------------------------+
