.. |tree_img| image:: img/zone_tree.svg
:width: 45%
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Circles represent processing units and squares represent network
routers. Bold lines represent communication links. The zone "AS2" models the core of a national network interconnecting a
small flat cluster (AS4) and a larger hierarchical cluster (AS5), a
A zone is not a physical resource, just a collection of resources (including other zones).
Consequently, you need to describe the gateway, i.e. the physical resource inside the zone used for the route.
It gives you 4 parameters to describe a zoneRoute:
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- src: The object of source zone
- dst: The object of destination zone
- gw_src: Gateway inside src zone. A Host (or router) belonging to src zone.
As we stated earlier, each zone implements a different strategy, defined
through the ``routing=`` parameter.
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- **Full**: all routes must be explicitly given using the
:ref:`pf_tag_route` and :ref:`pf_tag_link_ctn` tags (this :ref:`routing
model <pf_rm>` is both simple and inefficient :). It is OK to not