diff --git a/openflow/api/src/main/java/org/onlab/onos/of/controller/driver/OpenFlowAgent.java b/openflow/api/src/main/java/org/onlab/onos/of/controller/driver/OpenFlowAgent.java
new file mode 100644
index 0000000..0d37666
--- /dev/null
+++ b/openflow/api/src/main/java/org/onlab/onos/of/controller/driver/OpenFlowAgent.java
@@ -0,0 +1,77 @@
+package org.onlab.onos.of.controller.driver;
+
+import org.onlab.onos.of.controller.Dpid;
+import org.onlab.onos.of.controller.OpenFlowSwitch;
+import org.projectfloodlight.openflow.protocol.OFMessage;
+
+/**
+ * Responsible for keeping track of the current set of switches
+ * connected to the system. As well as whether they are in Master
+ * role or not.
+ *
+ */
+public interface OpenFlowAgent {
+
+    /**
+     * Add a switch that has just connected to the system.
+     * @param dpid the dpid to add
+     * @param sw the actual switch object.
+     * @return true if added, false otherwise.
+     */
+    public boolean addConnectedSwitch(Dpid dpid, OpenFlowSwitch sw);
+
+    /**
+     * Checks if the activation for this switch is valid.
+     * @param dpid the dpid to check
+     * @return true if valid, false otherwise
+     */
+    public boolean validActivation(Dpid dpid);
+
+    /**
+     * Called when a switch is activated, with this controller's role as MASTER.
+     * @param dpid the dpid to add.
+     * @param sw the actual switch
+     * @return true if added, false otherwise.
+     */
+    public boolean addActivatedMasterSwitch(Dpid dpid, OpenFlowSwitch sw);
+
+    /**
+     * Called when a switch is activated, with this controller's role as EQUAL.
+     * @param dpid the dpid to add.
+     * @param sw the actual switch
+     * @return true if added, false otherwise.
+     */
+    public boolean addActivatedEqualSwitch(Dpid dpid, OpenFlowSwitch sw);
+
+    /**
+     * Called when this controller's role for a switch transitions from equal
+     * to master. For 1.0 switches, we internally refer to the role 'slave' as
+     * 'equal' - so this transition is equivalent to 'addActivatedMasterSwitch'.
+     * @param dpid the dpid to transistion.
+     */
+    public void transitionToMasterSwitch(Dpid dpid);
+
+    /**
+     * Called when this controller's role for a switch transitions to equal.
+     * For 1.0 switches, we internally refer to the role 'slave' as
+     * 'equal'.
+     * @param dpid the dpid to transistion.
+     */
+    public void transitionToEqualSwitch(Dpid dpid);
+
+    /**
+     * Clear all state in controller switch maps for a switch that has
+     * disconnected from the local controller. Also release control for
+     * that switch from the global repository. Notify switch listeners.
+     * @param dpid the dpid to remove.
+     */
+    public void removeConnectedSwitch(Dpid dpid);
+
+    /**
+     * Process a message coming from a switch.
+     *
+     * @param dpid the dpid the message came on.
+     * @param m the message to process
+     */
+    public void processMessage(Dpid dpid, OFMessage m);
+}