diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/ISwitchStorage.java b/src/main/java/net/onrc/onos/ofcontroller/core/ISwitchStorage.java
new file mode 100644
index 0000000..d008220
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/ISwitchStorage.java
@@ -0,0 +1,59 @@
+package net.onrc.onos.ofcontroller.core;
+
+import java.util.Collection;
+
+
+import org.openflow.protocol.OFPhysicalPort;
+
+public interface ISwitchStorage extends INetMapStorage {
+	
+	public enum SwitchState {
+		INACTIVE,
+		ACTIVE
+	}
+	
+	/*
+	 * Update the switch details
+	 */
+	public void update(String dpid,SwitchState state, DM_OPERATION op);
+	/*
+	 * Associate a port on switch
+	 */
+	public void addPort(String dpid, OFPhysicalPort port);
+	/*
+	 * Get all ports associated on a switch
+	 */
+	public Collection<OFPhysicalPort> getPorts(long dpid);
+	/*
+	 * Get Port by Number
+	 */
+	public OFPhysicalPort getPort(String dpid, short portnum);
+	/*
+	 * Get port by name
+	 */
+	public OFPhysicalPort getPort(String dpid, String portName);
+	/*
+	 * Add a switch
+	 */
+	public void addSwitch(String dpid);
+	/*
+	 * Delete switch and associated ports
+	 */
+	public void deleteSwitch(String dpid);
+	/*
+	 * Delete a port on a switch by num
+	 */
+	public void deletePort(String dpid, short port);
+	/*
+	 * Delete port on a switch by name
+	 */
+	public void deletePort(String dpid, String portName);
+	
+	
+	/*
+	 * Initialize
+	 */
+	public void init(String conf);
+	
+
+}