+--------------------------------------------------------------------+
|                                                                    |
|                  (3) Network Domain Level                          |
|                                                                    |
+--------------------------------------------------------------------+

(a)             (b)             (c)
Inventory       Monitor      +- DataSheets/DataBase
Of identity     Energy       |  and/or via API
and Capability  Efficiency   |  Metadata and other
      ^              ^       | device/component/network
      |              |       | related information:                  (g)
      |              |       |                                      PETRA
      |              |       |  .Power/Energy related metrics         API
      |              |       |  .information                           ^
      |              |       |  .origin of Energy Mix                  |
      |              |       |  .carbon aware based on location        |
      |              |       |                                         |
      |              |       v                                         |
+--------------------------------------------------------------------+ |
|                                                                    | |
|       (2) controller (collection, compute and aggregate?)          +-+
|                                                                    |
+--------------------------------------------------------------------+
                ^                      ^                      ^ |
      (d)        |     (e)              |   (f)                | |
      Inventory  |     Monitor power    |   Control            | |
      Capability |     Proportion       |   (Energy saving     | |
                 |     Energy efficiency|   Functionality      | |
                 |     ratio, power     |   Localized mgmt/    | |
                 |     consumption,     |   network wide mgmt) | |
                 |     etc)             |                      | |
                 |                      |                      | v
+--------------------------------------------------------------------+
|                                                                    |
|                       (1) Device/Component                         |
|                                                                    |
| +---------+  +-----------+  +----------------+  +----------------+ |
| | (I)     |  | (II)      |  | (III)          |  | (IV)           | |
| |         |  |           |  | Legacy         |  | 'Attached'(PoE | |
| | Device  |  | Component |  | Device         |  | end Point)     | |
| |         |  |           |  |                |  |                | |
| +---------+  +-----------+  +----------------+  +----------------+ |
+--------------------------------------------------------------------+
