diff --git a/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java b/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java
new file mode 100644
index 0000000..99f291d
--- /dev/null
+++ b/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java
@@ -0,0 +1,45 @@
+package net.floodlightcontroller.core.internal;
+
+import java.util.List;
+
+import net.floodlightcontroller.core.INetMapTopologyService.ITopoSwitchService;
+
+public class TopoSwitchServiceImpl implements ITopoSwitchService {
+	
+	ThreadLocal<SwitchStorageImpl> store = new ThreadLocal<SwitchStorageImpl>() {
+		@Override
+		protected SwitchStorageImpl initialValue() {
+			SwitchStorageImpl swStore = new SwitchStorageImpl();
+			//TODO: Get the file path from global properties
+			swStore.init("/tmp/cassandra.titan");
+			return swStore;
+		}
+	};
+	
+	SwitchStorageImpl swStore = store.get();
+	
+	@Override
+	public List<String> GetActiveSwitches() {
+		// TODO Auto-generated method stub
+		return swStore.getActiveSwitches();
+	}
+
+	@Override
+	public List<String> GetAllSwitches() {
+		// TODO Auto-generated method stub
+		return swStore.getAllSwitches();
+	}
+
+	@Override
+	public List<String> GetInactiveSwitches() {
+		// TODO Auto-generated method stub
+		return swStore.getInactiveSwitches();
+	}
+
+	@Override
+	public List<String> GetPortsOnSwitch(String dpid) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+    
+}