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30 lines
1.0 KiB
ReStructuredText
30 lines
1.0 KiB
ReStructuredText
.. _routing-static:
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Static
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------
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Static routes are manually configured network routes.
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A typical use for a static route is a static default route for systems that do
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not make use of DHCP or dynamic routing protocols:
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.. code-block:: sh
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set protocols static route 0.0.0.0/0 next-hop 10.1.1.1 distance '1'
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Another common use of static routes is to blackhole (drop) traffic. In the
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example below, RFC 1918 private IP networks are set as blackhole routes. This
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does not prevent networks within these segments from being used, since the
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most specific route is always used. It does, however, prevent traffic to
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unknown private networks from leaving the router. Commonly refereed to as
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leaking.
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.. code-block:: sh
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set protocols static route 10.0.0.0/8 blackhole distance '254'
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set protocols static route 172.16.0.0/12 blackhole distance '254'
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set protocols static route 192.168.0.0/16 blackhole distance '254'
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.. note:: Routes with a distance of 255 are effectively disabled and not
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installed into the kernel.
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