merge from upstream/master
diff --git a/src/main/java/net/onrc/onos/datagrid/HazelcastDatagrid.java b/src/main/java/net/onrc/onos/datagrid/HazelcastDatagrid.java
index 775f952..6483121 100644
--- a/src/main/java/net/onrc/onos/datagrid/HazelcastDatagrid.java
+++ b/src/main/java/net/onrc/onos/datagrid/HazelcastDatagrid.java
@@ -27,7 +27,6 @@
 import net.onrc.onos.ofcontroller.util.FlowPath;
 import net.onrc.onos.ofcontroller.util.serializers.KryoFactory;
 
-import org.openflow.util.HexString;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -99,8 +98,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryAdded(EntryEvent event) {
-	    Long keyLong = (Long)event.getKey();
+	public void entryAdded(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -118,8 +116,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryRemoved(EntryEvent event) {
-	    Long keyLong = (Long)event.getKey();
+	public void entryRemoved(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -137,8 +134,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryUpdated(EntryEvent event) {
-	    Long keyLong = (Long)event.getKey();
+	public void entryUpdated(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -156,7 +152,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryEvicted(EntryEvent event) {
+	public void entryEvicted(EntryEvent<Long, byte[]> event) {
 	    // NOTE: We don't use eviction for this map
 	}
     }
@@ -174,14 +170,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryAdded(EntryEvent event) {
-	    //
-	    // NOTE: Ignore Flow Entries Events originated by this instance
-	    //
-	    if (event.getMember().localMember())
-		return;
-
-	    Long keyLong = (Long)event.getKey();
+	public void entryAdded(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -199,14 +188,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryRemoved(EntryEvent event) {
-	    //
-	    // NOTE: Ignore Flow Entries Events originated by this instance
-	    //
-	    if (event.getMember().localMember())
-		return;
-
-	    Long keyLong = (Long)event.getKey();
+	public void entryRemoved(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -224,14 +206,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryUpdated(EntryEvent event) {
-	    //
-	    // NOTE: Ignore Flow Entries Events originated by this instance
-	    //
-	    if (event.getMember().localMember())
-		return;
-
-	    Long keyLong = (Long)event.getKey();
+	public void entryUpdated(EntryEvent<Long, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -249,7 +224,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryEvicted(EntryEvent event) {
+	public void entryEvicted(EntryEvent<Long, byte[]> event) {
 	    // NOTE: We don't use eviction for this map
 	}
     }
@@ -267,8 +242,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryAdded(EntryEvent event) {
-	    String keyString = (String)event.getKey();
+	public void entryAdded(EntryEvent<String, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -287,8 +261,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryRemoved(EntryEvent event) {
-	    String keyString = (String)event.getKey();
+	public void entryRemoved(EntryEvent<String, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -307,8 +280,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryUpdated(EntryEvent event) {
-	    String keyString = (String)event.getKey();
+	public void entryUpdated(EntryEvent<String, byte[]> event) {
 	    byte[] valueBytes = (byte[])event.getValue();
 
 	    //
@@ -327,7 +299,7 @@
 	 *
 	 * @param event the notification event for the entry.
 	 */
-	public void entryEvicted(EntryEvent event) {
+	public void entryEvicted(EntryEvent<String, byte[]> event) {
 	    // NOTE: We don't use eviction for this map
 	}
     }
diff --git a/src/main/java/net/onrc/onos/graph/GraphDBOperation.java b/src/main/java/net/onrc/onos/graph/GraphDBOperation.java
index bfd9046..03b4c96 100644
--- a/src/main/java/net/onrc/onos/graph/GraphDBOperation.java
+++ b/src/main/java/net/onrc/onos/graph/GraphDBOperation.java
@@ -176,9 +176,14 @@
 	 */
 	public IPortObject searchPort(String dpid, Short number) {
 		FramedGraph<TitanGraph> fg = conn.getFramedGraph();
+		if ( fg == null ) return null;
 		String id = dpid + number.toString();
-		return (fg != null && fg.getVertices("port_id",id).iterator().hasNext()) ? 
-				fg.getVertices("port_id",id,IPortObject.class).iterator().next() : null;
+		Iterator<IPortObject> ports =  fg.getVertices("port_id",id,IPortObject.class).iterator();
+		if ( ports.hasNext() ) {
+			return ports.next();
+		} else {
+			return null;
+		}
 	}
 
 	/**
@@ -206,10 +211,14 @@
 	 * @param macAddr MAC address to search and get
 	 */
 	public IDeviceObject searchDevice(String macAddr) {
-		// TODO Auto-generated method stub
-		FramedGraph<TitanGraph> fg = conn.getFramedGraph();	
-		return (fg != null && fg.getVertices("dl_addr",macAddr).iterator().hasNext()) ?
-			fg.getVertices("dl_addr",macAddr, IDeviceObject.class).iterator().next() : null;
+		FramedGraph<TitanGraph> fg = conn.getFramedGraph();
+		if ( fg == null ) return null;
+		Iterator<IDeviceObject> devices =  fg.getVertices("dl_addr",macAddr, IDeviceObject.class).iterator();
+		if ( devices.hasNext() ) {
+			return devices.next();
+		} else {
+			return null;
+		}
 	}
 
 	/**
@@ -288,10 +297,13 @@
 	 */
 	public IFlowPath searchFlowPath(FlowId flowId) {
 		FramedGraph<TitanGraph> fg = conn.getFramedGraph();
-		
-		return fg.getVertices("flow_id", flowId.toString()).iterator().hasNext() ? 
-		    fg.getVertices("flow_id", flowId.toString(),
-				   IFlowPath.class).iterator().next() : null;
+		if ( fg == null ) return null;
+		Iterator<IFlowPath> flowpaths = fg.getVertices("flow_id", flowId.toString(), IFlowPath.class).iterator();
+		if ( flowpaths.hasNext() ) {
+			return flowpaths.next();
+		} else {
+			return null;
+		}
 	}
 
 	/**
@@ -299,10 +311,10 @@
 	 * @param flowEntry flow entry object
 	 */
 	public IFlowPath getFlowPathByFlowEntry(IFlowEntry flowEntry) {
-		GremlinPipeline<Vertex, IFlowPath> pipe = new GremlinPipeline<Vertex, IFlowPath>();
-		pipe.start(flowEntry.asVertex());
-		pipe.out("flow");
-		FramedVertexIterable<IFlowPath> r = new FramedVertexIterable(conn.getFramedGraph(), (Iterable) pipe, IFlowPath.class);
+		GremlinPipeline<Vertex, Vertex> pipe = new GremlinPipeline<Vertex, Vertex>();
+		pipe.start(flowEntry.asVertex()).out("flow");
+		FramedVertexIterable<IFlowPath> r = new FramedVertexIterable<IFlowPath>(conn.getFramedGraph(),
+				(Iterable<Vertex>) pipe, IFlowPath.class);
 		return r.iterator().hasNext() ? r.iterator().next() : null;
 	}
 
@@ -348,10 +360,13 @@
 	 */
 	public IFlowEntry searchFlowEntry(FlowEntryId flowEntryId) {
 		FramedGraph<TitanGraph> fg = conn.getFramedGraph();
-		
-		return fg.getVertices("flow_entry_id", flowEntryId.toString()).iterator().hasNext() ? 
-		    fg.getVertices("flow_entry_id", flowEntryId.toString(),
-				   IFlowEntry.class).iterator().next() : null;
+		if ( fg == null ) return null;
+		Iterator<IFlowEntry> flowentries = fg.getVertices("flow_entry_id", flowEntryId.toString(), IFlowEntry.class).iterator();
+		if ( flowentries.hasNext() ) {
+			return flowentries.next();
+		} else {
+			return null;
+		}
 	}
 
 	/**
diff --git a/src/main/java/net/onrc/onos/ofcontroller/bgproute/Interface.java b/src/main/java/net/onrc/onos/ofcontroller/bgproute/Interface.java
index 5db8f0a..cc454ec 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/bgproute/Interface.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/bgproute/Interface.java
@@ -14,7 +14,6 @@
 
 public class Interface {
 	private final String name;
-	private final SwitchPort switchPort;
 	private final long dpid;
 	private final short port;
 	private final InetAddress ipAddress;
@@ -31,7 +30,6 @@
 		this.port = port;
 		this.ipAddress = InetAddresses.forString(ipAddress);
 		this.prefixLength = prefixLength;
-		this.switchPort = new SwitchPort(new Dpid(this.dpid), new Port(this.port));
 	}
 	
 	public String getName() {
diff --git a/src/main/java/net/onrc/onos/ofcontroller/bgproute/Ptree.java b/src/main/java/net/onrc/onos/ofcontroller/bgproute/Ptree.java
index 041061c..c80d055 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/bgproute/Ptree.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/bgproute/Ptree.java
@@ -244,7 +244,6 @@
 		add.parent = node;
 	}
 	
-	@SuppressWarnings("unused")
     private PtreeNode node_common(PtreeNode node, byte [] key, int key_bits) {
 		int i;
 		int limit = Math.min(node.keyBits, key_bits) / 8;
@@ -275,8 +274,6 @@
 		}
 		
 		PtreeNode add = new PtreeNode(null, common_len, maxKeyOctets);
-		if (add == null)
-			return null;
 		
 		int j;
 		for (j = 0; j < i; j++)
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/INetMapTopologyObjects.java b/src/main/java/net/onrc/onos/ofcontroller/core/INetMapTopologyObjects.java
index 49ffd4e..29c4377 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/INetMapTopologyObjects.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/INetMapTopologyObjects.java
@@ -1,7 +1,5 @@
 package net.onrc.onos.ofcontroller.core;
 
-import net.onrc.onos.ofcontroller.flowmanager.web.DatapathSummarySerializer;
-
 import org.codehaus.jackson.annotate.JsonIgnore;
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.codehaus.jackson.map.annotate.JsonSerialize;
@@ -13,6 +11,9 @@
 import com.tinkerpop.frames.annotations.gremlin.GremlinParam;
 import com.tinkerpop.frames.VertexFrame;
 
+import net.onrc.onos.ofcontroller.flowmanager.web.DatapathSummarySerializer;
+import net.floodlightcontroller.core.web.serializers.IPv4Serializer;
+
 /*
  * This is the interfaces to make the objects for Cassandra DB.
  * They are interfaces, but it is also implementation,
@@ -205,6 +206,7 @@
 		
 		@JsonProperty("ipv4")
 		@Property("ipv4_address")
+		@JsonSerialize(using=IPv4Serializer.class)
 		public int getIpv4Address();
 		
 		@Property("ipv4_address")
@@ -251,6 +253,20 @@
 		@Property("flow_path_flags")
 		public void setFlowPathFlags(Long flowPathFlags);
 
+		@JsonProperty("idleTimeout")
+		@Property("idle_timeout")
+		public Integer getIdleTimeout();
+
+		@Property("idle_timeout")
+		public void setIdleTimeout(Integer idleTimeout);
+
+		@JsonProperty("hardTimeout")
+		@Property("hard_timeout")
+		public Integer getHardTimeout();
+
+		@Property("hard_timeout")
+		public void setHardTimeout(Integer hardTimeout);
+
 		@JsonProperty("srcDpid")
 		@Property("src_switch")
 		public String getSrcSwitch();
@@ -405,6 +421,20 @@
 		@Property("flow_entry_id")
 		public void setFlowEntryId(String flowEntryId);
 
+		@JsonProperty("idleTimeout")
+		@Property("idle_timeout")
+		public Integer getIdleTimeout();
+
+		@Property("idle_timeout")
+		public void setIdleTimeout(Integer idleTimeout);
+
+		@JsonProperty("hardTimeout")
+		@Property("hard_timeout")
+		public Integer getHardTimeout();
+
+		@Property("hard_timeout")
+		public void setHardTimeout(Integer hardTimeout);
+
 		@Property("switch_dpid")
 		public String getSwitchDpid();
 
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/DeviceStorageImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/DeviceStorageImpl.java
index f5f8b00..4bbc054 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/DeviceStorageImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/DeviceStorageImpl.java
@@ -80,6 +80,10 @@
 	                log.debug("Adding device {}: creating new device", device.getMACAddressString());
 	            }
 	 			
+	            if (obj == null) {
+	            	return null;
+	            }
+	            
 	            changeDeviceAttachments(device, obj);
 		        
 	            changeDeviceIpv4Addresses(device, obj);
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
index 7a3d43e..635e24e 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
@@ -14,10 +14,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.tinkerpop.blueprints.Vertex;
-import com.tinkerpop.pipes.PipeFunction;
-import com.tinkerpop.pipes.transform.PathPipe;
-
 /**
  * This is the class for storing the information of links into GraphDB
  */
@@ -490,33 +486,4 @@
 	    
 	 	return success;
 	}
-
-	// TODO should be moved to TopoLinkServiceImpl (never used in this class)
-	static class ExtractLink implements PipeFunction<PathPipe<Vertex>, Link> {
-	
-		@SuppressWarnings("unchecked")
-		@Override
-		public Link compute(PathPipe<Vertex> pipe ) {
-			long s_dpid = 0;
-			long d_dpid = 0;
-			short s_port = 0;
-			short d_port = 0;
-			List<Vertex> V = new ArrayList<Vertex>();
-			V = (List<Vertex>)pipe.next();
-			Vertex src_sw = V.get(0);
-			Vertex dest_sw = V.get(3);
-			Vertex src_port = V.get(1);
-			Vertex dest_port = V.get(2);
-			s_dpid = HexString.toLong((String) src_sw.getProperty("dpid"));
-			d_dpid = HexString.toLong((String) dest_sw.getProperty("dpid"));
-			s_port = (Short) src_port.getProperty("number");
-			d_port = (Short) dest_port.getProperty("number");
-			
-			Link l = new Link(s_dpid,s_port,d_dpid,d_port);
-			
-			return l;
-		}
-	}
-
-
 }
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/SwitchStorageImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/SwitchStorageImpl.java
index dcfdc73..5f51b58 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/SwitchStorageImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/SwitchStorageImpl.java
@@ -348,7 +348,6 @@
 	        	IPortObject p = sw.getPort(port);
 	            if (p != null) {
 	        		log.info("SwitchStorage:deletePort dpid:{} port:{} found and set INACTIVE", dpid, port);
-	        		//deletePortImpl(p);
 	        		p.setState("INACTIVE");
 	        		
 	        		// XXX for now delete devices when we change a port to prevent
@@ -492,12 +491,4 @@
 	    			new Object[] {port.getPortId(), state, desc});
 		}
 	}
-	
-	private void deletePortImpl(IPortObject port) {
-		if (port != null) {
-			op.removePort(port);
-	    	log.info("SwitchStorage:deletePortImpl port:{} done",
-	    			port.getPortId());
-		}
-	}
 }
\ No newline at end of file
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoLinkServiceImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoLinkServiceImpl.java
index b692e8e..f1f015a 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoLinkServiceImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoLinkServiceImpl.java
@@ -7,13 +7,15 @@
 import net.onrc.onos.graph.GraphDBOperation;
 import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.ISwitchObject;
 import net.onrc.onos.ofcontroller.core.INetMapTopologyService.ITopoLinkService;
-import net.onrc.onos.ofcontroller.core.internal.LinkStorageImpl.ExtractLink;
 
+import org.openflow.util.HexString;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.gremlin.java.GremlinPipeline;
+import com.tinkerpop.pipes.PipeFunction;
+import com.tinkerpop.pipes.transform.PathPipe;
 
 public class TopoLinkServiceImpl implements ITopoLinkService {
 	
@@ -31,7 +33,6 @@
  
 	@Override
 	public List<Link> getActiveLinks() {
-		// TODO Auto-generated method stub
 		op = new GraphDBOperation("");
 		op.commit(); //Commit to ensure we see latest data
 		Iterable<ISwitchObject> switches = op.getActiveSwitches();
@@ -56,7 +57,6 @@
 
 	@Override
 	public List<Link> getLinksOnSwitch(String dpid) {
-		// TODO Auto-generated method stub
 		List<Link> links = new ArrayList<Link>(); 
 		ISwitchObject sw = op.searchSwitch(dpid);
 		GremlinPipeline<Vertex, Link> pipe = new GremlinPipeline<Vertex, Link>();
@@ -73,5 +73,29 @@
 		return links;
 
 	}
-	
+
+	private class ExtractLink implements PipeFunction<PathPipe<Vertex>, Link> {
+		@Override
+		public Link compute(PathPipe<Vertex> pipe) {
+			long s_dpid = 0;
+			long d_dpid = 0;
+			short s_port = 0;
+			short d_port = 0;
+			
+			@SuppressWarnings("unchecked")
+			List<Vertex> V = pipe.next();
+			Vertex src_sw = V.get(0);
+			Vertex dest_sw = V.get(3);
+			Vertex src_port = V.get(1);
+			Vertex dest_port = V.get(2);
+			s_dpid = HexString.toLong((String) src_sw.getProperty("dpid"));
+			d_dpid = HexString.toLong((String) dest_sw.getProperty("dpid"));
+			s_port = (Short) src_port.getProperty("number");
+			d_port = (Short) dest_port.getProperty("number");
+			
+			Link l = new Link(s_dpid,s_port,d_dpid,d_port);
+			
+			return l;
+		}
+	}
 }
diff --git a/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/NetworkGraphPublisher.java b/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/NetworkGraphPublisher.java
index 50fe8f8..4b31667 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/NetworkGraphPublisher.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/floodlightlistener/NetworkGraphPublisher.java
@@ -39,7 +39,6 @@
 import net.onrc.onos.ofcontroller.core.ISwitchStorage;
 import net.onrc.onos.ofcontroller.core.INetMapStorage.DM_OPERATION;
 import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.ISwitchObject;
-import net.onrc.onos.ofcontroller.core.ISwitchStorage.SwitchState;
 import net.onrc.onos.ofcontroller.core.internal.DeviceStorageImpl;
 import net.onrc.onos.ofcontroller.core.internal.LinkStorageImpl;
 import net.onrc.onos.ofcontroller.core.internal.SwitchStorageImpl;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
index 1babafa..da407ab 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowDatabaseOperation.java
@@ -3,10 +3,8 @@
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.ArrayList;
-import java.util.Comparator;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.concurrent.ConcurrentLinkedQueue;
 
 import net.floodlightcontroller.util.MACAddress;
 
@@ -90,6 +88,8 @@
 	// - flowPath.flowPathType()
 	// - flowPath.flowPathUserState()
 	// - flowPath.flowPathFlags()
+	// - flowPath.idleTimeout()
+	// - flowPath.hardTimeout()
 	// - flowPath.dataPath().srcPort()
 	// - flowPath.dataPath().dstPort()
 	// - flowPath.matchSrcMac()
@@ -109,6 +109,8 @@
 	flowObj.setFlowPathType(flowPath.flowPathType().toString());
 	flowObj.setFlowPathUserState(flowPath.flowPathUserState().toString());
 	flowObj.setFlowPathFlags(flowPath.flowPathFlags().flags());
+	flowObj.setIdleTimeout(flowPath.idleTimeout());
+	flowObj.setHardTimeout(flowPath.hardTimeout());
 	flowObj.setSrcSwitch(flowPath.dataPath().srcPort().dpid().toString());
 	flowObj.setSrcPort(flowPath.dataPath().srcPort().port().value());
 	flowObj.setDstSwitch(flowPath.dataPath().dstPort().dpid().toString());
@@ -225,6 +227,8 @@
 	// - InPort edge
 	// - OutPort edge
 	//
+	// - flowEntry.idleTimeout()
+	// - flowEntry.hardTimeout()
 	// - flowEntry.dpid()
 	// - flowEntry.flowEntryUserState()
 	// - flowEntry.flowEntrySwitchState()
@@ -245,6 +249,8 @@
 	// - flowEntry.actions()
 	//
 	ISwitchObject sw = dbHandler.searchSwitch(flowEntry.dpid().toString());
+	flowEntryObj.setIdleTimeout(flowEntry.idleTimeout());
+	flowEntryObj.setHardTimeout(flowEntry.hardTimeout());
 	flowEntryObj.setSwitchDpid(flowEntry.dpid().toString());
 	flowEntryObj.setSwitch(sw);
 	if (flowEntry.flowEntryMatch().matchInPort()) {
@@ -509,6 +515,8 @@
 	String flowPathType = flowObj.getFlowPathType();
 	String flowPathUserState = flowObj.getFlowPathUserState();
 	Long flowPathFlags = flowObj.getFlowPathFlags();
+	Integer idleTimeout = flowObj.getIdleTimeout();
+	Integer hardTimeout = flowObj.getHardTimeout();
 	String srcSwitchStr = flowObj.getSrcSwitch();
 	Short srcPortShort = flowObj.getSrcPort();
 	String dstSwitchStr = flowObj.getDstSwitch();
@@ -519,6 +527,8 @@
 	    (flowPathType == null) ||
 	    (flowPathUserState == null) ||
 	    (flowPathFlags == null) ||
+	    (idleTimeout == null) ||
+	    (hardTimeout == null) ||
 	    (srcSwitchStr == null) ||
 	    (srcPortShort == null) ||
 	    (dstSwitchStr == null) ||
@@ -533,6 +543,8 @@
 	flowPath.setFlowPathType(FlowPathType.valueOf(flowPathType));
 	flowPath.setFlowPathUserState(FlowPathUserState.valueOf(flowPathUserState));
 	flowPath.setFlowPathFlags(new FlowPathFlags(flowPathFlags));
+	flowPath.setIdleTimeout(idleTimeout);
+	flowPath.setHardTimeout(hardTimeout);
 	flowPath.dataPath().srcPort().setDpid(new Dpid(srcSwitchStr));
 	flowPath.dataPath().srcPort().setPort(new Port(srcPortShort));
 	flowPath.dataPath().dstPort().setDpid(new Dpid(dstSwitchStr));
@@ -611,11 +623,15 @@
      */
     public static FlowEntry extractFlowEntry(IFlowEntry flowEntryObj) {
 	String flowEntryIdStr = flowEntryObj.getFlowEntryId();
+	Integer idleTimeout = flowEntryObj.getIdleTimeout();
+	Integer hardTimeout = flowEntryObj.getHardTimeout();
 	String switchDpidStr = flowEntryObj.getSwitchDpid();
 	String userState = flowEntryObj.getUserState();
 	String switchState = flowEntryObj.getSwitchState();
 
 	if ((flowEntryIdStr == null) ||
+	    (idleTimeout == null) ||
+	    (hardTimeout == null) ||
 	    (switchDpidStr == null) ||
 	    (userState == null) ||
 	    (switchState == null)) {
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowEventHandler.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowEventHandler.java
index 6c200fa..3538eb4 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowEventHandler.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowEventHandler.java
@@ -75,11 +75,14 @@
     // Transient state for processing the Flow Paths:
     //  - The Flow Paths that should be recomputed
     //  - The Flow Paths with modified Flow Entries
+    //  - The Flow Paths that we should check if installed in all switches
     //
     private Map<Long, FlowPath> shouldRecomputeFlowPaths =
 	new HashMap<Long, FlowPath>();
     private Map<Long, FlowPath> modifiedFlowPaths =
 	new HashMap<Long, FlowPath>();
+    private Map<Long, FlowPath> checkIfInstalledFlowPaths =
+	new HashMap<Long, FlowPath>();
 
     /**
      * Constructor for a given Flow Manager and Datagrid Service.
@@ -239,6 +242,12 @@
 	for (FlowPath flowPath : modifiedFlowPaths.values())
 	    flowPath.dataPath().removeDeletedFlowEntries();
 
+	//
+	// Check if Flow Paths have been installed into all switches,
+	// and generate the appropriate events.
+	//
+	checkInstalledFlowPaths(checkIfInstalledFlowPaths.values());
+
 	// Cleanup
 	topologyEvents.clear();
 	flowPathEvents.clear();
@@ -246,6 +255,44 @@
 	//
 	shouldRecomputeFlowPaths.clear();
 	modifiedFlowPaths.clear();
+	checkIfInstalledFlowPaths.clear();
+    }
+
+    /**
+     * Check if Flow Paths have been installed into all switches,
+     * and generate the appropriate events.
+     *
+     * @param flowPaths the flowPaths to process.
+     */
+    private void checkInstalledFlowPaths(Collection<FlowPath> flowPaths) {
+	List<FlowPath> installedFlowPaths = new LinkedList<FlowPath>();
+
+	Kryo kryo = kryoFactory.newKryo();
+
+	for (FlowPath flowPath : flowPaths) {
+	    boolean isInstalled = true;
+
+	    //
+	    // Check whether all Flow Entries have been installed
+	    //
+	    for (FlowEntry flowEntry : flowPath.flowEntries()) {
+		if (flowEntry.flowEntrySwitchState() !=
+		    FlowEntrySwitchState.FE_SWITCH_UPDATED) {
+		    isInstalled = false;
+		    break;
+		}
+	    }
+
+	    if (isInstalled) {
+		// Create a copy and add it to the list
+		FlowPath copyFlowPath = kryo.copy(flowPath);
+		installedFlowPaths.add(copyFlowPath);
+	    }
+	}
+	kryoFactory.deleteKryo(kryo);
+
+	// Generate an event for the installed Flow Path.
+	flowManager.notificationFlowPathsInstalled(installedFlowPaths);
     }
 
     /**
@@ -340,6 +387,9 @@
 		    }
 		    modifiedFlowPaths.put(flowPath.flowId().value(), flowPath);
 		    break;
+		case FP_TYPE_UNKNOWN:
+		    log.error("FlowPath event with unknown type");
+		    break;
 		}
 		allFlowPaths.put(flowPath.flowId().value(), flowPath);
 
@@ -526,10 +576,12 @@
 	    }
 
 	    //
-	    // Update the local Flow Entry.
+	    // Update the local Flow Entry, and keep state to check
+	    // if the Flow Path has been installed.
 	    //
 	    localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState());
 	    localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState());
+	    checkIfInstalledFlowPaths.put(flowPath.flowId().value(), flowPath);
 	    return localFlowEntry;
 	}
 
@@ -700,6 +752,12 @@
 	    newFlowEntry.setFlowId(new FlowId(flowPath.flowId().value()));
 
 	    //
+	    // Copy the Flow timeouts
+	    //
+	    newFlowEntry.setIdleTimeout(flowPath.idleTimeout());
+	    newFlowEntry.setHardTimeout(flowPath.hardTimeout());
+
+	    //
 	    // Allocate the FlowEntryMatch by copying the default one
 	    // from the FlowPath (if set).
 	    //
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
index 7ef49ef..41cf670 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
@@ -10,8 +10,6 @@
 import java.util.SortedMap;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
 
 import net.floodlightcontroller.core.IFloodlightProviderService;
 import net.floodlightcontroller.core.IOFSwitch;
@@ -23,15 +21,13 @@
 import net.onrc.onos.datagrid.IDatagridService;
 import net.onrc.onos.graph.GraphDBOperation;
 import net.onrc.onos.ofcontroller.core.INetMapStorage;
-import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IFlowEntry;
-import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IFlowPath;
 import net.onrc.onos.ofcontroller.floodlightlistener.INetworkGraphService;
 import net.onrc.onos.ofcontroller.flowmanager.web.FlowWebRoutable;
 import net.onrc.onos.ofcontroller.flowprogrammer.IFlowPusherService;
+import net.onrc.onos.ofcontroller.forwarding.IForwardingService;
 import net.onrc.onos.ofcontroller.topology.Topology;
 import net.onrc.onos.ofcontroller.util.*;
 
-import org.openflow.protocol.OFType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -49,6 +45,7 @@
     protected FlowEventHandler flowEventHandler;
 
     protected IFlowPusherService pusher;
+    protected IForwardingService forwardingService;
     
     // Flow Entry ID generation state
     private static Random randomGenerator = new Random();
@@ -134,7 +131,8 @@
 	l.add(INetworkGraphService.class);
 	l.add(IDatagridService.class);
 	l.add(IRestApiService.class);
-		l.add(IFlowPusherService.class);
+	l.add(IFlowPusherService.class);
+	l.add(IForwardingService.class);
         return l;
     }
 
@@ -151,6 +149,7 @@
 	datagridService = context.getServiceImpl(IDatagridService.class);
 	restApi = context.getServiceImpl(IRestApiService.class);
 	pusher = context.getServiceImpl(IFlowPusherService.class);
+	forwardingService = context.getServiceImpl(IForwardingService.class);
 
 	this.init("");
     }
@@ -352,8 +351,25 @@
      * @param sw the switch the Flow Entry expired on.
      * @param flowEntryId the Flow Entry ID of the expired Flow Entry.
      */
-    public void flowEntryOnSwitchExpired(IOFSwitch sw, FlowEntryId flowEntryId) {
-	// TODO: Not implemented yet
+    public void flowEntryOnSwitchExpired(IOFSwitch sw,
+					 FlowEntryId flowEntryId) {
+	// Find the Flow Entry
+	FlowEntry flowEntry = datagridService.getFlowEntry(flowEntryId);
+	if (flowEntryId == null)
+	    return;		// Flow Entry not found
+
+	// Find the Flow Path
+	FlowPath flowPath = datagridService.getFlow(flowEntry.flowId());
+	if (flowPath == null)
+	    return;		// Flow Path not found
+
+	//
+	// Remove the Flow if the Flow Entry expired on the first switch
+	//
+	Dpid srcDpid = flowPath.dataPath().srcPort().dpid();
+	if (srcDpid.value() != sw.getId())
+	    return;
+	deleteFlow(flowPath.flowId());
     }
 
     /**
@@ -370,7 +386,6 @@
 	// Process all entries
 	//
 	for (Pair<IOFSwitch, FlowEntry> entry : entries) {
-	    IOFSwitch sw = entry.first;
 	    FlowEntry flowEntry = entry.second;
 
 	    //
@@ -391,11 +406,24 @@
 	    case FE_USER_DELETE:
 		datagridService.notificationSendFlowEntryRemoved(flowEntry.flowEntryId());
 		break;
+	    case FE_USER_UNKNOWN:
+		assert(false);
+		break;
 	    }
 	}
     }
 
     /**
+     * Generate a notification that a collection of Flow Paths has been
+     * installed in the network.
+     *
+     * @param flowPaths the collection of installed Flow Paths.
+     */
+    void notificationFlowPathsInstalled(Collection<FlowPath> flowPaths) {
+	forwardingService.flowsInstalled(flowPaths);
+    }
+
+    /**
      * Push modified Flow-related state as appropriate.
      *
      * @param modifiedFlowPaths the collection of modified Flow Paths.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowService.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowService.java
index a25602d..549a0fc 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowService.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/IFlowService.java
@@ -6,8 +6,6 @@
 import net.floodlightcontroller.core.IOFSwitch;
 import net.floodlightcontroller.core.module.IFloodlightService;
 import net.onrc.onos.ofcontroller.topology.Topology;
-import net.onrc.onos.ofcontroller.util.CallerId;
-import net.onrc.onos.ofcontroller.util.DataPathEndpoints;
 import net.onrc.onos.ofcontroller.util.FlowEntry;
 import net.onrc.onos.ofcontroller.util.FlowEntryId;
 import net.onrc.onos.ofcontroller.util.FlowId;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
index 461d231..a4f0a8c 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
@@ -42,9 +42,8 @@
 public class FlowProgrammer implements IFloodlightModule, 
 				       IOFMessageListener,
 				       IOFSwitchListener {
-    @SuppressWarnings("unused")
     // flag to enable FlowSynchronizer
-    private static final boolean enableFlowSync = false;
+    private static final boolean enableFlowSync = true;
     protected static Logger log = LoggerFactory.getLogger(FlowProgrammer.class);
     protected volatile IFloodlightProviderService floodlightProvider;
     protected volatile IControllerRegistryService registryService;
@@ -155,8 +154,10 @@
     public void addedSwitch(IOFSwitch sw) {
 	log.debug("Switch added: {}", sw.getId());
 
-	if (enableFlowSync && registryService.hasControl(sw.getId())) {
-	    synchronizer.synchronize(sw);
+	if (enableFlowSync) {
+		if (registryService.hasControl(sw.getId())) {
+		    synchronizer.synchronize(sw);
+		}
 	}
     }
 
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
index c3c7107..3f61248 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
@@ -34,7 +34,6 @@
 import net.onrc.onos.ofcontroller.util.FlowEntryAction.*;
 import net.onrc.onos.ofcontroller.util.FlowEntry;
 import net.onrc.onos.ofcontroller.util.FlowEntryActions;
-import net.onrc.onos.ofcontroller.util.FlowEntryId;
 import net.onrc.onos.ofcontroller.util.FlowEntryMatch;
 import net.onrc.onos.ofcontroller.util.FlowEntryUserState;
 import net.onrc.onos.ofcontroller.util.IPv4Net;
@@ -68,8 +67,6 @@
     protected static final int MAX_MESSAGE_SEND = 100;
 
     public static final short PRIORITY_DEFAULT = 100;
-    public static final short FLOWMOD_DEFAULT_IDLE_TIMEOUT = 0;	// infinity
-    public static final short FLOWMOD_DEFAULT_HARD_TIMEOUT = 0;	// infinite
 
 	public enum QueueState {
 		READY,
@@ -82,8 +79,9 @@
 	 * @author Naoki Shiota
 	 *
 	 */
-	@SuppressWarnings("serial")
 	private class SwitchQueue extends ArrayDeque<OFMessage> {
+		private static final long serialVersionUID = 1L;
+
 		QueueState state;
 		
 		// Max rate of sending message (bytes/ms). 0 implies no limitation.
@@ -722,8 +720,8 @@
 			}
 		}
 
-		fm.setIdleTimeout(FLOWMOD_DEFAULT_IDLE_TIMEOUT)
-				.setHardTimeout(FLOWMOD_DEFAULT_HARD_TIMEOUT)
+		fm.setIdleTimeout((short)flowEntry.idleTimeout())
+				.setHardTimeout((short)flowEntry.hardTimeout())
 				.setPriority(PRIORITY_DEFAULT)
 				.setBufferId(OFPacketOut.BUFFER_ID_NONE).setCookie(cookie)
 				.setCommand(flowModCommand).setMatch(match)
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowSynchronizer.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowSynchronizer.java
index 7d5527b..6ef44be 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowSynchronizer.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowSynchronizer.java
@@ -7,8 +7,10 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
+import java.util.concurrent.FutureTask;
 
 import org.openflow.protocol.OFFlowMod;
 import org.openflow.protocol.OFMatch;
@@ -44,26 +46,27 @@
 
     private GraphDBOperation dbHandler;
     protected IFlowPusherService pusher;
-    private Map<IOFSwitch, Thread> switchThreads; 
+    private Map<IOFSwitch, FutureTask<SyncResult>> switchThreads; 
 
     public FlowSynchronizer() {
 	dbHandler = new GraphDBOperation("");
-	switchThreads = new HashMap<IOFSwitch, Thread>();
+	switchThreads = new HashMap<IOFSwitch, FutureTask<SyncResult>>();
     }
 
     @Override
-    public void synchronize(IOFSwitch sw) {
+    public Future<SyncResult> synchronize(IOFSwitch sw) {
 	Synchronizer sync = new Synchronizer(sw);
-	Thread t = new Thread(sync);
-	switchThreads.put(sw, t);
-	t.start();
+	FutureTask<SyncResult> task = new FutureTask<SyncResult>(sync);
+	switchThreads.put(sw, task);
+	task.run();
+	return task;
     }
     
     @Override
     public void interrupt(IOFSwitch sw) {
-	Thread t = switchThreads.remove(sw);
+	FutureTask<SyncResult> t = switchThreads.remove(sw);
 	if(t != null) {
-	    t.interrupt();
+		t.cancel(true);
 	}	
     }
 
@@ -80,7 +83,7 @@
      * @author Brian
      *
      */
-	protected class Synchronizer implements Runnable {
+	protected class Synchronizer implements Callable<SyncResult> {
 	IOFSwitch sw;
 	ISwitchObject swObj;
 
@@ -90,14 +93,45 @@
 	    this.swObj = dbHandler.searchSwitch(dpid.toString());
 	}
 
+	double graphIDTime, switchTime, compareTime, graphEntryTime, extractTime, pushTime, totalTime;
 	@Override
-	public void run() {
+	public SyncResult call() {
 	    // TODO: stop adding other flow entries while synchronizing
 	    //pusher.suspend(sw);
+	    long start = System.nanoTime();
 	    Set<FlowEntryWrapper> graphEntries = getFlowEntriesFromGraph();
+	    long step1 = System.nanoTime();
 	    Set<FlowEntryWrapper> switchEntries = getFlowEntriesFromSwitch();
-	    compare(graphEntries, switchEntries);
+	    long step2 = System.nanoTime();
+	    SyncResult result = compare(graphEntries, switchEntries);
+	    long step3 = System.nanoTime();
+	    graphIDTime = (step1 - start); 
+	    switchTime = (step2 - step1);
+	    compareTime = (step3 - step2);
+	    totalTime = (step3 - start);
+	    outputTime();
 	    //pusher.resume(sw);
+	    
+	    return result;
+	}
+	
+	private void outputTime() {
+	    double div = Math.pow(10, 6); //convert nanoseconds to ms
+	    graphIDTime /= div;
+	    switchTime /= div;
+	    compareTime = (compareTime - graphEntryTime - extractTime - pushTime) / div;
+	    graphEntryTime /= div;
+	    extractTime /= div;
+	    pushTime /= div;
+	    totalTime /= div;
+	    log.debug("Sync time (ms):" +
+	    		  graphIDTime + "," +
+	     		  switchTime + "," + 
+	    		  compareTime + "," +
+	     		  graphEntryTime + "," +
+	    		  extractTime + "," + 
+	     		  pushTime + "," +
+	              totalTime);
 	}
 
 	/**
@@ -107,7 +141,7 @@
 	 * @param graphEntries Flow entries in GraphDB.
 	 * @param switchEntries Flow entries in switch.
 	 */
-	private void compare(Set<FlowEntryWrapper> graphEntries, Set<FlowEntryWrapper> switchEntries) {
+	private SyncResult compare(Set<FlowEntryWrapper> graphEntries, Set<FlowEntryWrapper> switchEntries) {
 	    int added = 0, removed = 0, skipped = 0;
 	    for(FlowEntryWrapper entry : switchEntries) {
 		if(graphEntries.contains(entry)) {
@@ -123,11 +157,16 @@
 	    for(FlowEntryWrapper entry : graphEntries) {
 		// add flow entry to switch
 		entry.addToSwitch(sw);
+		graphEntryTime += entry.dbTime;
+		extractTime += entry.extractTime;
+		pushTime += entry.pushTime;
 		added++;
 	    }	  
 	    log.debug("Flow entries added "+ added + ", " +
 		      "Flow entries removed "+ removed + ", " +
 		      "Flow entries skipped " + skipped);
+	    
+	    return new SyncResult(added, removed, skipped);
 	}
 
 	/**
@@ -216,6 +255,7 @@
 	 * Install this FlowEntry to a switch via FlowPusher.
 	 * @param sw Switch to which flow will be installed.
 	 */
+	double dbTime, extractTime, pushTime;
 	public void addToSwitch(IOFSwitch sw) {
 	    if (statisticsReply != null) {
 		log.error("Error adding existing flow entry {} to sw {}", 
@@ -223,6 +263,7 @@
 		return;
 	    }
 
+	    double startDB = System.nanoTime();
 	    // Get the Flow Entry state from the Network Graph
 	    IFlowEntry iFlowEntry = null;
 	    try {
@@ -237,7 +278,9 @@
 			  flowEntryId, sw.getId());
 		return;
 	    }
+	    dbTime = System.nanoTime() - startDB;
 
+	    double startExtract = System.nanoTime();
 	    FlowEntry flowEntry =
 		FlowDatabaseOperation.extractFlowEntry(iFlowEntry);
 	    if (flowEntry == null) {
@@ -245,8 +288,11 @@
 			  flowEntryId, sw.getId());
 		return;
 	    }
-
+	    extractTime = System.nanoTime() - startExtract;
+	    
+	    double startPush = System.nanoTime();
 	    pusher.pushFlowEntry(sw, flowEntry);
+	    pushTime = System.nanoTime() - startPush;
 	}
 	
 	/**
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/IFlowSyncService.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/IFlowSyncService.java
index 4e6efaf..4fe0857 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/IFlowSyncService.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/IFlowSyncService.java
@@ -1,7 +1,8 @@
 package net.onrc.onos.ofcontroller.flowprogrammer;
 
+import java.util.concurrent.Future;
+
 import net.floodlightcontroller.core.IOFSwitch;
-import net.floodlightcontroller.core.IOFSwitchListener;
 import net.floodlightcontroller.core.module.IFloodlightService;
 
 /**
@@ -11,7 +12,19 @@
  *
  */
 public interface IFlowSyncService extends IFloodlightService {
-    public void synchronize(IOFSwitch sw);
+    public Future<SyncResult> synchronize(IOFSwitch sw);
     
     public void interrupt(IOFSwitch sw);
+    
+    public class SyncResult {
+    	public final int flowAdded;
+    	public final int flowRemoved;
+    	public final int flowSkipped;
+    	
+    	public SyncResult(int added, int removed, int skipped) {
+    		flowAdded = added;
+    		flowRemoved = removed;
+    		flowSkipped = skipped;
+    	}
+    }
 }
diff --git a/src/main/java/net/onrc/onos/ofcontroller/forwarding/Forwarding.java b/src/main/java/net/onrc/onos/ofcontroller/forwarding/Forwarding.java
index f33f986..3725d5e 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/forwarding/Forwarding.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/forwarding/Forwarding.java
@@ -3,9 +3,11 @@
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import net.floodlightcontroller.core.FloodlightContext;
 import net.floodlightcontroller.core.IFloodlightProviderService;
@@ -46,28 +48,80 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class Forwarding implements IOFMessageListener, IFloodlightModule {
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Multimaps;
+
+public class Forwarding implements IOFMessageListener, IFloodlightModule,
+									IForwardingService {
 	private final static Logger log = LoggerFactory.getLogger(Forwarding.class);
 
 	private IFloodlightProviderService floodlightProvider;
 	private IFlowService flowService;
+	@SuppressWarnings("unused")
 	private IDatagridService datagridService;
 	
 	private IDeviceStorage deviceStorage;
 	private TopologyManager topologyService;
 	
-	public Forwarding() {
+	private Map<Path, Long> pendingFlows;
+	private Multimap<Long, PacketToPush> waitingPackets;
+	
+	public class PacketToPush {
+		public final OFPacketOut packet;
+		public final long dpid;
 		
+		public PacketToPush(OFPacketOut packet, long dpid) {
+			this.packet = packet;
+			this.dpid = dpid;
+		}
+	}
+	
+	public final class Path {
+		public final SwitchPort srcPort;
+		public final SwitchPort dstPort;
+		
+		public Path(SwitchPort src, SwitchPort dst) {
+			srcPort = new SwitchPort(new Dpid(src.dpid().value()), 
+					new Port(src.port().value()));
+			dstPort = new SwitchPort(new Dpid(dst.dpid().value()), 
+					new Port(dst.port().value()));
+		}
+		
+		@Override
+		public boolean equals(Object other) {
+			if (!(other instanceof Path)) {
+				return false;
+			}
+			
+			Path otherPath = (Path) other;
+			return srcPort.equals(otherPath.srcPort) && 
+					dstPort.equals(otherPath.dstPort);
+		}
+		
+		@Override
+		public int hashCode() {
+			int hash = 17;
+			hash = 31 * hash + srcPort.hashCode();
+			hash = 31 * hash + dstPort.hashCode();
+			return hash;
+		}
 	}
 	
 	@Override
 	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		return null;
+		List<Class<? extends IFloodlightService>> services = 
+				new ArrayList<Class<? extends IFloodlightService>>(1);
+		services.add(IForwardingService.class);
+		return services;
 	}
 
 	@Override
 	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		return null;
+		Map<Class<? extends IFloodlightService>, IFloodlightService> impls = 
+				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(1);
+		impls.put(IForwardingService.class, this);
+		return impls;
 	}
 
 	@Override
@@ -89,6 +143,10 @@
 		
 		floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
 		
+		pendingFlows = new ConcurrentHashMap<Path, Long>();
+		waitingPackets = Multimaps.synchronizedSetMultimap(
+				HashMultimap.<Long, PacketToPush>create());
+		
 		deviceStorage = new DeviceStorageImpl();
 		deviceStorage.init("");
 		topologyService = new TopologyManager();
@@ -141,7 +199,8 @@
 	}
 	
 	private void handlePacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
-		String destinationMac = HexString.toHexString(eth.getDestinationMACAddress()); 
+		String destinationMac = 
+				HexString.toHexString(eth.getDestinationMACAddress()); 
 		
 		IDeviceObject deviceObject = deviceStorage.getDeviceByMac(
 				destinationMac);
@@ -151,7 +210,7 @@
 			return;
 		}
 		
-		Iterator<IPortObject> ports = deviceObject.getAttachedPorts().iterator();
+		Iterator<IPortObject> ports = deviceObject.getAttachedPorts().iterator();	
 		if (!ports.hasNext()) {
 			log.debug("No attachment point found for device {}", destinationMac);
 			return;
@@ -171,46 +230,32 @@
 		MACAddress srcMacAddress = MACAddress.valueOf(eth.getSourceMACAddress());
 		MACAddress dstMacAddress = MACAddress.valueOf(eth.getDestinationMACAddress());
 		
-		if (flowExists(srcSwitchPort, srcMacAddress, 
-				dstSwitchPort, dstMacAddress)) {
-			log.debug("Not adding flow because it already exists");
+		
+		DataPath datapath = new DataPath();
+		datapath.setSrcPort(srcSwitchPort);
+		datapath.setDstPort(dstSwitchPort);
+		
+		
+		
+		Path pathspec = new Path(srcSwitchPort, dstSwitchPort);
+		// TODO check concurrency
+		Long existingFlowId = pendingFlows.get(pathspec);
+		
+		if (existingFlowId != null) {
+			log.debug("Found existing flow {}", 
+					HexString.toHexString(existingFlowId));
 			
-			// TODO check reverse flow as well
-			
-			DataPath shortestPath = 
-					topologyService.getDatabaseShortestPath(srcSwitchPort, dstSwitchPort);
-			
-			if (shortestPath == null || shortestPath.flowEntries().isEmpty()) {
-				log.warn("No path found between {} and {} - not handling packet",
-						srcSwitchPort, dstSwitchPort);
-				return;
-			}
-			
-			Port outPort = shortestPath.flowEntries().get(0).outPort();
-			forwardPacket(pi, sw, outPort.value());
+			// TODO do stuff.
+			OFPacketOut po = constructPacketOut(datapath, pi, sw);
+			waitingPackets.put(existingFlowId, new PacketToPush(po, sw.getId()));
 			return;
 		}
 		
-		// Calculate a shortest path before pushing flow mods.
-		// This will be used later by the packet-out processing, but it uses
-		// the database so will be slow, and we should do it before flow mods.
-		DataPath shortestPath = 
-				topologyService.getDatabaseShortestPath(srcSwitchPort, dstSwitchPort);
-		
-		if (shortestPath == null || shortestPath.flowEntries().isEmpty()) {
-			log.warn("No path found between {} and {} - not handling packet",
-					srcSwitchPort, dstSwitchPort);
-			return;
-		}
 		
 		log.debug("Adding new flow between {} at {} and {} at {}",
 				new Object[]{srcMacAddress, srcSwitchPort, dstMacAddress, dstSwitchPort});
 		
 		
-		DataPath dataPath = new DataPath();
-		dataPath.setSrcPort(srcSwitchPort);
-		dataPath.setDstPort(dstSwitchPort);
-		
 		CallerId callerId = new CallerId("Forwarding");
 		
 		//FlowId flowId = new FlowId(flowService.getNextFlowEntryId());
@@ -226,18 +271,13 @@
 		// For now just forward IPv4 packets. This prevents accidentally
 		// forwarding other stuff like ARP.
 		flowPath.flowEntryMatch().enableEthernetFrameType(Ethernet.TYPE_IPv4);
-		flowPath.setDataPath(dataPath);
+		flowPath.setDataPath(datapath);
 			
-		FlowId flowId = flowService.addFlow(flowPath);
-		//flowService.addFlow(flowPath, flowId);
-		
-		
 		DataPath reverseDataPath = new DataPath();
 		// Reverse the ports for the reverse path
 		reverseDataPath.setSrcPort(dstSwitchPort);
 		reverseDataPath.setDstPort(srcSwitchPort);
 		
-		//FlowId reverseFlowId = new FlowId(flowService.getNextFlowEntryId());
 		// TODO implement copy constructor for FlowPath
 		FlowPath reverseFlowPath = new FlowPath();
 		//reverseFlowPath.setFlowId(reverseFlowId);
@@ -253,13 +293,25 @@
 		reverseFlowPath.dataPath().srcPort().dpid().toString();
 		
 		// TODO what happens if no path exists?
-		//flowService.addFlow(reverseFlowPath, reverseFlowId);
-		FlowId reverseFlowId = flowService.addFlow(reverseFlowPath);
+		FlowId flowId = new FlowId(flowService.getNextFlowEntryId());
+		FlowId reverseFlowId = new FlowId(flowService.getNextFlowEntryId());
 		
-		Port outPort = shortestPath.flowEntries().get(0).outPort();
-		forwardPacket(pi, sw, outPort.value());
+		flowPath.setFlowId(flowId);
+		reverseFlowPath.setFlowId(reverseFlowId);
+		
+		OFPacketOut po = constructPacketOut(datapath, pi, sw);
+		Path reversePathSpec = new Path(dstSwitchPort, srcSwitchPort);
+		
+		// Add to waiting lists
+		pendingFlows.put(pathspec, flowId.value());
+		pendingFlows.put(reversePathSpec, reverseFlowId.value());
+		waitingPackets.put(flowId.value(), new PacketToPush(po, sw.getId()));
+		
+		flowService.addFlow(reverseFlowPath);
+		flowService.addFlow(flowPath);
 	}
 	
+	/*
 	private boolean flowExists(SwitchPort srcPort, MACAddress srcMac, 
 			SwitchPort dstPort, MACAddress dstMac) {
 		for (FlowPath flow : datagridService.getAllFlows()) {
@@ -285,17 +337,18 @@
 		
 		return false;
 	}
+	*/
 
-	private void forwardPacket(OFPacketIn pi, IOFSwitch sw, short port) {
-		List<OFAction> actions = new ArrayList<OFAction>(1);
-		actions.add(new OFActionOutput(port));
+	private OFPacketOut constructPacketOut(DataPath datapath, OFPacketIn pi, 
+			IOFSwitch sw) {
+		//List<OFAction> actions = new ArrayList<OFAction>(1);
+		//actions.add(new OFActionOutput(port));
 		
 		OFPacketOut po = new OFPacketOut();
 		po.setInPort(OFPort.OFPP_NONE)
 		.setInPort(pi.getInPort())
-		.setActions(actions)
-		.setActionsLength((short)OFActionOutput.MINIMUM_LENGTH)
-		.setLengthU(OFPacketOut.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
+		.setActions(new ArrayList<OFAction>())
+		.setLengthU(OFPacketOut.MINIMUM_LENGTH);
 		
 		if (sw.getBuffers() == 0) {
 			po.setBufferId(OFPacketOut.BUFFER_ID_NONE)
@@ -306,11 +359,45 @@
 			po.setBufferId(pi.getBufferId());
 		}
 		
-		try {
-			sw.write(po, null);
-			sw.flush();
-		} catch (IOException e) {
-			log.error("Error writing packet out to switch: {}", e);
+		return po;
+	}
+
+	@Override
+	public void flowsInstalled(Collection<FlowPath> installedFlowPaths) {
+		for (FlowPath flowPath : installedFlowPaths) {
+			flowInstalled(flowPath);
+		}
+	}
+
+	private void flowInstalled(FlowPath installedFlowPath) {
+		// TODO check concurrency
+		// will need to sync and access both collections at once.
+		long flowId = installedFlowPath.flowId().value();
+		Collection<PacketToPush> packets = waitingPackets.removeAll(flowId);
+		
+		//remove pending flows entry
+		Path pathToRemove = new Path(installedFlowPath.dataPath().srcPort(),
+				installedFlowPath.dataPath().dstPort());
+		pendingFlows.remove(pathToRemove);
+		
+		for (PacketToPush packet : packets) {
+			IOFSwitch sw = floodlightProvider.getSwitches().get(packet.dpid);
+			
+			OFPacketOut po = packet.packet;
+			short outPort = 
+					installedFlowPath.flowEntries().get(0).outPort().value();
+			po.getActions().add(new OFActionOutput(outPort));
+			po.setActionsLength((short)
+					(po.getActionsLength() + OFActionOutput.MINIMUM_LENGTH));
+			po.setLengthU(po.getLengthU() + OFActionOutput.MINIMUM_LENGTH);
+			
+			try {
+				sw.write(packet.packet, null);
+				sw.flush();
+			} catch (IOException e) {
+				log.error("Error writing packet out to switch {}:", 
+						sw.getId(), e);
+			}
 		}
 	}
 }
diff --git a/src/main/java/net/onrc/onos/ofcontroller/forwarding/IForwardingService.java b/src/main/java/net/onrc/onos/ofcontroller/forwarding/IForwardingService.java
new file mode 100644
index 0000000..e5bd714
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/forwarding/IForwardingService.java
@@ -0,0 +1,25 @@
+package net.onrc.onos.ofcontroller.forwarding;
+
+import java.util.Collection;
+
+import net.floodlightcontroller.core.module.IFloodlightService;
+import net.onrc.onos.ofcontroller.util.FlowPath;
+
+/**
+ * Temporary interface that allows the Forwarding module to be
+ * notified when a flow has been installed by the FlowManager.
+ * 
+ * This should be refactored to a listener framework in the future.
+ * @author jono
+ *
+ */
+public interface IForwardingService extends IFloodlightService {
+	/**
+	 * Notify the Forwarding module that a collection of flows has been
+	 * installed in the network.
+	 *
+	 * @param installedFlowPaths the collection of FlowPaths that have
+	 * been installed in the network.
+	 */
+	public void flowsInstalled(Collection<FlowPath> installedFlowPaths);
+}
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpMessage.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpMessage.java
index 6ce5ade..ee8f23d 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpMessage.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpMessage.java
@@ -2,11 +2,7 @@
 
 import java.io.Serializable;
 import java.net.InetAddress;
-import java.util.ArrayList;
-import java.util.List;
-
 import net.floodlightcontroller.util.MACAddress;
-import net.onrc.onos.ofcontroller.util.SwitchPort;
 
 public class ArpMessage implements Serializable {
 
@@ -25,9 +21,8 @@
 	private final long outSwitch; 
 	private final short outPort;
 	
-	
-	private final List<SwitchPort> switchPorts = new ArrayList<SwitchPort>();
-	
+
+
 	public enum Type {
 		REQUEST,
 		REPLY
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ProxyArpManager.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ProxyArpManager.java
index b2b3c48..c53e8e1 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ProxyArpManager.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ProxyArpManager.java
@@ -394,6 +394,7 @@
  
 	}
 	
+	@SuppressWarnings("unused")
 	private void handleArpReply(IOFSwitch sw, OFPacketIn pi, ARP arp){
 		if (log.isTraceEnabled()) {
 			log.trace("ARP reply recieved: {} => {}, on {}/{}", new Object[] { 
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/ITopologyNetService.java b/src/main/java/net/onrc/onos/ofcontroller/topology/ITopologyNetService.java
index 9585366..4269eac 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/ITopologyNetService.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/ITopologyNetService.java
@@ -1,7 +1,5 @@
 package net.onrc.onos.ofcontroller.topology;
 
-import java.util.Map;
-
 import net.floodlightcontroller.core.module.IFloodlightService;
 import net.onrc.onos.ofcontroller.util.DataPath;
 import net.onrc.onos.ofcontroller.util.SwitchPort;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java b/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
index dbf9ada..fc75591 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
@@ -265,6 +265,9 @@
 
 	    break;
 	}
+	case ELEMENT_UNKNOWN:
+	    // TODO: Adding "assert(false);" here can be dangerous
+	    break;
 	}
 
 	return isModified;
@@ -315,6 +318,9 @@
 	    }
 	    break;
 	}
+	case ELEMENT_UNKNOWN:
+	    // TODO: Adding "assert(false);" here can be dangerous
+	    break;
 	}
 
 	return isModified;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyElement.java b/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyElement.java
index b01c7d3..0fefa3a 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyElement.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyElement.java
@@ -1,8 +1,5 @@
 package net.onrc.onos.ofcontroller.topology;
 
-import java.util.Map;
-import java.util.TreeMap;
-
 /**
  * Class for storing information about a Topology Element: Switch, Port or
  * Link.
@@ -165,6 +162,8 @@
 	    return "Link=" +
 		Long.toHexString(fromSwitchDpid) + "/" + fromSwitchPort + "/" +
 		Long.toHexString(toSwitchDpid) + "/" + toSwitchPort;
+	case ELEMENT_UNKNOWN:
+	    return "Element=UNKNOWN";
 	}
 
 	assert(false);
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyManager.java b/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyManager.java
index c0e04f2..02e0ffb 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyManager.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/TopologyManager.java
@@ -225,8 +225,12 @@
 	    SwitchPort dest = flowPath.dataPath().dstPort();
 	    return ShortestPath.getTopologyShortestPath(topology, src, dest);
 	}
+
 	case FP_TYPE_EXPLICIT_PATH:
 	    return flowPath.dataPath();
+
+	case FP_TYPE_UNKNOWN:
+	    return null;
 	}
 
 	return null;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/web/RouteResource.java b/src/main/java/net/onrc/onos/ofcontroller/topology/web/RouteResource.java
index 0d33b27..d8997dc 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/web/RouteResource.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/web/RouteResource.java
@@ -2,7 +2,6 @@
 
 import net.onrc.onos.ofcontroller.flowmanager.IFlowService;
 import net.onrc.onos.ofcontroller.topology.ITopologyNetService;
-import net.onrc.onos.ofcontroller.topology.TopologyManager;
 import net.onrc.onos.ofcontroller.util.DataPath;
 import net.onrc.onos.ofcontroller.util.Dpid;
 import net.onrc.onos.ofcontroller.util.Port;
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntry.java b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntry.java
index 98dbd88..c8b206f 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntry.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntry.java
@@ -13,6 +13,8 @@
 public class FlowEntry {
     private FlowId flowId;			// FlowID of the Flow Entry
     private FlowEntryId flowEntryId;		// The Flow Entry ID
+    private int		idleTimeout;		// The Flow idle timeout
+    private int		hardTimeout;		// The Flow hard timeout
     private FlowEntryMatch flowEntryMatch;	// The Flow Entry Match
     private FlowEntryActions flowEntryActions;	// The Flow Entry Actions
     private Dpid dpid;				// The Switch DPID
@@ -174,6 +176,54 @@
     }
 
     /**
+     * Get the flow idle timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @return the flow idle timeout.
+     */
+    @JsonProperty("idleTimeout")
+    public int idleTimeout() { return idleTimeout; }
+
+    /**
+     * Set the flow idle timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @param idleTimeout the flow idle timeout to set.
+     */
+    @JsonProperty("idleTimeout")
+    public void setIdleTimeout(int idleTimeout) {
+	this.idleTimeout = 0xffff & idleTimeout;
+    }
+
+    /**
+     * Get the flow hard timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @return the flow hard timeout.
+     */
+    @JsonProperty("hardTimeout")
+    public int hardTimeout() { return hardTimeout; }
+
+    /**
+     * Set the flow hard timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @param hardTimeout the flow hard timeout to set.
+     */
+    @JsonProperty("hardTimeout")
+    public void setHardTimeout(int hardTimeout) {
+	this.hardTimeout = 0xffff & hardTimeout;
+    }
+
+    /**
      * Get the Flow Entry Match.
      *
      * @return the Flow Entry Match.
@@ -343,7 +393,8 @@
      * Convert the flow entry to a string.
      *
      * The string has the following form:
-     *  [flowEntryId=XXX flowEntryMatch=XXX flowEntryActions=XXX dpid=XXX
+     *  [flowEntryId=XXX idleTimeout=XXX hardTimeout=XXX
+     *   flowEntryMatch=XXX flowEntryActions=XXX dpid=XXX
      *   inPort=XXX outPort=XXX flowEntryUserState=XXX flowEntrySwitchState=XXX
      *   flowEntryErrorState=XXX]
      * @return the flow entry as a string.
@@ -359,10 +410,12 @@
 	if ( flowId != null ) {
 		ret.append(" flowId=" + this.flowId.toString());
 	}
+	ret.append(" idleTimeout=" + this.idleTimeout);
+	ret.append(" hardTimeout=" + this.hardTimeout);
 	if ( flowEntryMatch != null ) {
 		ret.append(" flowEntryMatch=" + this.flowEntryMatch.toString());
 	}
-	ret.append( " flowEntryActions=" + this.flowEntryActions.toString() );
+	ret.append(" flowEntryActions=" + this.flowEntryActions.toString() );
 	if ( dpid != null ) {
 		ret.append(" dpid=" + this.dpid.toString());
 	}
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryAction.java b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryAction.java
index a1163c8..e431f8a 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryAction.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/FlowEntryAction.java
@@ -43,6 +43,13 @@
 	private ActionValues(short value) {
 	    this.value = value;
 	}
+
+	/**
+	 * Get the value.
+	 *
+	 * @return the value.
+	 */
+	public short getValue() { return value; }
     }
 
     /**
@@ -1564,6 +1571,9 @@
 	case ACTION_ENQUEUE:
 	    ret += " action=" + actionEnqueue.toString();
 	    break;
+	case ACTION_VENDOR:
+	    ret += " action=VENDOR";
+	    break;
 	}
 	ret += "]";
 
@@ -1656,6 +1666,9 @@
 	    case ACTION_ENQUEUE:
 		actionEnqueue = new ActionEnqueue(decode);
 		break;
+	    case ACTION_VENDOR:
+		// TODO: Handle it as appropriate
+		break;
 	    }
 	} catch (IllegalArgumentException e) {
 	    throw new IllegalArgumentException("Invalid action string");
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/FlowPath.java b/src/main/java/net/onrc/onos/ofcontroller/util/FlowPath.java
index ab3edb1..7c87a10 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/util/FlowPath.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/FlowPath.java
@@ -18,7 +18,9 @@
     private FlowPathType flowPathType;	// The Flow Path type
     private FlowPathUserState flowPathUserState; // The Flow Path User state
     private FlowPathFlags flowPathFlags; // The Flow Path flags
-    private DataPath dataPath;		// The data path
+    private int		idleTimeout;	// The Flow idle timeout
+    private int		hardTimeout;	// The Flow hard timeout
+    private DataPath	dataPath;	// The data path
     private FlowEntryMatch flowEntryMatch; // Common Flow Entry Match for all
 					// Flow Entries
     private FlowEntryActions flowEntryActions; // The Flow Entry Actions for
@@ -45,6 +47,8 @@
 	this.setFlowPathType(FlowPathType.valueOf(flowObj.getFlowPathType()));
 	this.setFlowPathUserState(FlowPathUserState.valueOf(flowObj.getFlowPathUserState()));
 	this.setFlowPathFlags(new FlowPathFlags(flowObj.getFlowPathFlags()));
+	this.setIdleTimeout(flowObj.getIdleTimeout());
+	this.setHardTimeout(flowObj.getHardTimeout());
     	this.dataPath().srcPort().setDpid(new Dpid(flowObj.getSrcSwitch()));
     	this.dataPath().srcPort().setPort(new Port(flowObj.getSrcPort()));
     	this.dataPath().dstPort().setDpid(new Dpid(flowObj.getDstSwitch()));
@@ -295,6 +299,54 @@
     }
 
     /**
+     * Get the flow idle timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @return the flow idle timeout.
+     */
+    @JsonProperty("idleTimeout")
+    public int idleTimeout() { return idleTimeout; }
+
+    /**
+     * Set the flow idle timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @param idleTimeout the flow idle timeout to set.
+     */
+    @JsonProperty("idleTimeout")
+    public void setIdleTimeout(int idleTimeout) {
+	this.idleTimeout = 0xffff & idleTimeout;
+    }
+
+    /**
+     * Get the flow hard timeout in seconds.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @return the flow hard timeout.
+     */
+    @JsonProperty("hardTimeout")
+    public int hardTimeout() { return hardTimeout; }
+
+    /**
+     * Set the flow hard timeout.
+     *
+     * It should be an unsigned integer in the interval [0, 65535].
+     * If zero, the timeout is not set.
+     *
+     * @param hardTimeout the flow hard timeout to set.
+     */
+    @JsonProperty("hardTimeout")
+    public void setHardTimeout(int hardTimeout) {
+	this.hardTimeout = 0xffff & hardTimeout;
+    }
+
+    /**
      * Get the flow path's data path.
      *
      * @return the flow path's data path.
@@ -366,8 +418,8 @@
      *
      * The string has the following form:
      *  [flowId=XXX installerId=XXX flowPathType = XXX flowPathUserState = XXX
-     *   flowPathFlags=XXX dataPath=XXX flowEntryMatch=XXX
-     *   flowEntryActions=XXX]
+     *   flowPathFlags=XXX idleTimeout=XXX hardTimeout=XXX dataPath=XXX
+     *   flowEntryMatch=XXX flowEntryActions=XXX]
      *
      * @return the flow path as a string.
      */
@@ -378,6 +430,8 @@
 	ret += " flowPathType=" + this.flowPathType;
 	ret += " flowPathUserState=" + this.flowPathUserState;
 	ret += " flowPathFlags=" + this.flowPathFlags.toString();
+	ret += " idleTimeout=" + this.idleTimeout;
+	ret += " hardTimeout=" + this.hardTimeout;
 	if (dataPath != null)
 	    ret += " dataPath=" + this.dataPath.toString();
 	if (flowEntryMatch != null)
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/FlowPathFlags.java b/src/main/java/net/onrc/onos/ofcontroller/util/FlowPathFlags.java
index 4bbd399..595eb5f 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/util/FlowPathFlags.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/FlowPathFlags.java
@@ -112,8 +112,6 @@
 
 	// Test all flags
 	if ((this.flags & DISCARD_FIRST_HOP_ENTRY) != 0) {
-	    if (flagsStr != null)
-		flagsStr += ",";
 	    flagsStr += "DISCARD_FIRST_HOP_ENTRY";
 	}
 	if ((this.flags & KEEP_ONLY_FIRST_HOP_ENTRY) != 0) {
@@ -121,6 +119,8 @@
 		flagsStr += ",";
 	    flagsStr += "KEEP_ONLY_FIRST_HOP_ENTRY";
 	}
+	if (flagsStr != null)
+	    ret += flagsStr;
 	ret += "]";
 
 	return ret;