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+.. _examples-ospf-unnumbered:
+
+#########################
+OSPF unnumbered with ECMP
+#########################
+
+General infomration can be found in the :ref:`routing-ospf` chapter.
+
+Configuration
+=============
+
+- Router A:
+
+.. code-block:: none
+
+  set interfaces ethernet eth0 address '10.0.0.1/24'
+  set interfaces ethernet eth1 address '192.168.0.1/32'
+  set interfaces ethernet eth1 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
+  set interfaces ethernet eth1 ip ospf network 'point-to-point'
+  set interfaces ethernet eth2 address '192.168.0.1/32'
+  set interfaces ethernet eth2 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
+  set interfaces ethernet eth2 ip ospf network 'point-to-point'
+  set interfaces loopback lo address '192.168.0.1/32'
+  set protocols ospf area 0.0.0.0 authentication 'md5'
+  set protocols ospf area 0.0.0.0 network '192.168.0.1/32'
+  set protocols ospf parameters router-id '192.168.0.1'
+  set protocols ospf redistribute connected
+
+- Router B:
+
+.. code-block:: none
+
+  set interfaces ethernet eth0 address '10.0.0.2/24'
+  set interfaces ethernet eth1 address '192.168.0.2/32'
+  set interfaces ethernet eth1 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
+  set interfaces ethernet eth1 ip ospf network 'point-to-point'
+  set interfaces ethernet eth2 address '192.168.0.2/32'
+  set interfaces ethernet eth2 ip ospf authentication md5 key-id 1 md5-key 'yourpassword'
+  set interfaces ethernet eth2 ip ospf network 'point-to-point'
+  set interfaces loopback lo address '192.168.0.2/32'
+  set protocols ospf area 0.0.0.0 authentication 'md5'
+  set protocols ospf area 0.0.0.0 network '192.168.0.2/32'
+  set protocols ospf parameters router-id '192.168.0.2'
+  set protocols ospf redistribute connected
+
+
+Results
+=======
+
+- Router A:
+
+.. code-block:: none
+
+  vyos@vyos:~$ show interfaces
+  Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
+  Interface        IP Address                        S/L  Description
+  ---------        ----------                        ---  -----------
+  eth0             10.0.0.1/24                       u/u
+  eth1             192.168.0.1/32                    u/u
+  eth2             192.168.0.1/32                    u/u
+  lo               127.0.0.1/8                       u/u
+                   192.168.0.1/32
+                   ::1/128
+
+.. code-block:: none
+
+  vyos@vyos:~$ show ip route
+  Codes: K - kernel route, C - connected, S - static, R - RIP,
+         O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
+         T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
+         F - PBR, f - OpenFabric,
+         > - selected route, * - FIB route, q - queued route, r - rejected route
+
+  S>* 0.0.0.0/0 [210/0] via 10.0.0.254, eth0, 00:57:34
+  O   10.0.0.0/24 [110/20] via 192.168.0.2, eth1 onlink, 00:13:21
+                              via 192.168.0.2, eth2 onlink, 00:13:21
+  C>* 10.0.0.0/24 is directly connected, eth0, 00:57:35
+  O   192.168.0.1/32 [110/0] is directly connected, lo, 00:48:53
+  C * 192.168.0.1/32 is directly connected, eth2, 00:56:31
+  C * 192.168.0.1/32 is directly connected, eth1, 00:56:31
+  C>* 192.168.0.1/32 is directly connected, lo, 00:57:36
+  O>* 192.168.0.2/32 [110/1] via 192.168.0.2, eth1 onlink, 00:29:03
+    *                        via 192.168.0.2, eth2 onlink, 00:29:03
+
+- Router B:
+
+.. code-block:: none
+
+  vyos@vyos:~$ show interfaces
+  Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
+  Interface        IP Address                        S/L  Description
+  ---------        ----------                        ---  -----------
+  eth0             10.0.0.2/24                       u/u
+  eth1             192.168.0.2/32                    u/u
+  eth2             192.168.0.2/32                    u/u
+  lo               127.0.0.1/8                       u/u
+                   192.168.0.2/32
+                   ::1/128
+
+.. code-block:: none
+
+  vyos@vyos:~$ show ip route
+  Codes: K - kernel route, C - connected, S - static, R - RIP,
+         O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
+         T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
+         F - PBR, f - OpenFabric,
+         > - selected route, * - FIB route, q - queued route, r - rejected route
+
+  S>* 0.0.0.0/0 [210/0] via 10.0.0.254, eth0, 00:57:34
+  O   10.0.0.0/24 [110/20] via 192.168.0.1, eth1 onlink, 00:13:21
+                              via 192.168.0.1, eth2 onlink, 00:13:21
+  C>* 10.0.0.0/24 is directly connected, eth0, 00:57:35
+  O   192.168.0.2/32 [110/0] is directly connected, lo, 00:48:53
+  C * 192.168.0.2/32 is directly connected, eth2, 00:56:31
+  C * 192.168.0.2/32 is directly connected, eth1, 00:56:31
+  C>* 192.168.0.2/32 is directly connected, lo, 00:57:36
+  O>* 192.168.0.1/32 [110/1] via 192.168.0.1, eth1 onlink, 00:29:03
+    *                        via 192.168.0.1, eth2 onlink, 00:29:03