doc: RIP BFD integration documentation

Let users know about the RIP BFD integration commands and increment the
used RFCs reference.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

doc/user/bfd.rst

@@ -10,6 +10,7 @@ the following RFCs:
 
 * :rfc:`5880`
 * :rfc:`5881`
+* :rfc:`5882`
 * :rfc:`5883`
 
 Currently, there are two implementations of the BFD commands in FRR:
@@ -353,6 +354,33 @@ The following commands are available inside the interface configuration node.
    that interface.
 
 
+.. _bfd-rip-peer-config:
+
+RIP BFD configuration
+---------------------
+
+The following commands are available inside the interface configuration node:
+
+.. clicmd:: ip rip bfd
+
+   Automatically create BFD session for each RIP peer discovered in this
+   interface. When the BFD session monitor signalize that the link is down
+   the RIP peer is removed and all the learned routes associated with that
+   peer are removed.
+
+
+.. clicmd:: ip rip bfd profile BFD_PROFILE_NAME
+
+   Selects a BFD profile for the BFD sessions created in this interface.
+
+
+The following command is available in the RIP router configuration node:
+
+.. clicmd:: bfd default-profile BFD_PROFILE_NAME
+
+   Selects a default BFD profile for all sessions without a profile specified.
+
+
 .. _bfd-static-peer-config:
 
 BFD Static Route Monitoring Configuration

doc/user/overview.rst

@@ -465,6 +465,8 @@ BFD
   :t:`Bidirectional Forwarding Detection (BFD), D. Katz, D. Ward. June 2010`
 - :rfc:`5881`
   :t:`Bidirectional Forwarding Detection (BFD) for IPv4 and IPv6 (Single Hop), D. Katz, D. Ward. June 2010`
+- :rfc:`5882`
+  :t:`Generic Application of Bidirectional Forwarding Detection (BFD), D. Katz, D. Ward. June 2010`
 - :rfc:`5883`
   :t:`Bidirectional Forwarding Detection (BFD) for Multihop Paths, D. Katz, D. Ward. June 2010`