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+.. _clustering:
+
+Clustering
+==========
+
+VyOS supports multicast and unicast clustering. Multicast is default and to
+use the unicast method you can add the peer directive to the interface with
+the ip of the other cluster member.
+
+In the example below SSH is clustered between two nodes with the unicast
+method.
+
+.. code-block:: sh
+
+  cluster {
+      dead-interval 20000
+      group cluster {
+          auto-failback false
+          primary vyos
+          secondary vyos2
+          service ssh
+          service 192.168.0.123/24/eth0
+      }
+      interface eth0 {
+          peer 192.168.0.121
+      }
+      keepalive-interval 5000
+      monitor-dead-interval 20000
+      pre-shared-secret S3cr#t
+  }