arrange services and protocols

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diff --git a/docs/configuration/protocols/rip.rst b/docs/configuration/protocols/rip.rst
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+.. include:: /_include/need_improvement.txt
+
+.. _rip:
+
+###
+RIP
+###
+
+:abbr:`RIP (Routing Information Protocol)` is a widely deployed interior gateway
+protocol. RIP was developed in the 1970s at Xerox Labs as part of the XNS
+routing protocol. RIP is a distance-vector protocol and is based on the
+Bellman-Ford algorithms. As a distance-vector protocol, RIP router send updates
+to its neighbors periodically, thus allowing the convergence to a known
+topology. In each update, the distance to any given network will be broadcast
+to its neighboring router.
+
+Supported versions of RIP are:
+* RIPv1 as described in :rfc:`1058`
+* RIPv2 as described in :rfc:`2453`
+
+Simple RIP configuration using 2 nodes and redistributing connected interfaces.
+
+**Node 1:**
+
+.. code-block:: none
+
+  set interfaces loopback address 10.1.1.1/32
+  set protocols rip network 192.168.0.0/24
+  set protocols rip redistribute connected
+
+**Node 2:**
+
+.. code-block:: none
+
+  set interfaces loopback address 10.2.2.2/32
+  set protocols rip network 192.168.0.0/24
+  set protocols rip redistribute connected