diff --git a/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/Controller.java b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/Controller.java
new file mode 100644
index 0000000..cf3db9e
--- /dev/null
+++ b/ovsdb/ctl/src/main/java/org/onosproject/ovsdb/controller/impl/Controller.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.ovsdb.controller.impl;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.PooledByteBufAllocator;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.ServerChannel;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.handler.codec.string.StringEncoder;
+import io.netty.util.CharsetUtil;
+
+import java.net.InetSocketAddress;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import org.onlab.packet.IpAddress;
+import org.onosproject.ovsdb.controller.OvsdbConstant;
+import org.onosproject.ovsdb.controller.OvsdbNodeId;
+import org.onosproject.ovsdb.controller.driver.DefaultOvsdbClient;
+import org.onosproject.ovsdb.controller.driver.OvsdbAgent;
+import org.onosproject.ovsdb.controller.driver.OvsdbProviderService;
+import org.onosproject.ovsdb.rfc.jsonrpc.Callback;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The main controller class. Handles all setup and network listeners -
+ * Distributed ovsdbClient.
+ */
+public class Controller {
+    protected static final Logger log = LoggerFactory
+            .getLogger(Controller.class);
+
+    private int ovsdbPort = OvsdbConstant.OVSDBPORT;
+
+    private OvsdbAgent agent;
+    private Callback monitorCallback;
+
+    private final ExecutorService executorService = Executors
+            .newFixedThreadPool(10);
+
+    private EventLoopGroup bossGroup;
+    private EventLoopGroup workerGroup;
+    private Class<? extends ServerChannel> serverChannelClass;
+
+    /**
+     * Initialization.
+     */
+    private void initEventLoopGroup() {
+        bossGroup = new NioEventLoopGroup();
+        workerGroup = new NioEventLoopGroup();
+        serverChannelClass = NioServerSocketChannel.class;
+    }
+
+    /**
+     * Accepts incoming connections.
+     */
+    private void startAcceptingConnections() throws InterruptedException {
+        ServerBootstrap b = new ServerBootstrap();
+
+        b.group(bossGroup, workerGroup).channel(serverChannelClass)
+                .childHandler(new OnosCommunicationChannelInitializer());
+        b.option(ChannelOption.SO_BACKLOG, 128);
+        b.option(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, 32 * 1024);
+        b.option(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, 8 * 1024);
+        b.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
+        b.childOption(ChannelOption.SO_KEEPALIVE, true);
+        ChannelFuture cf = b.bind(ovsdbPort).sync();
+        cf.channel().closeFuture().sync();
+    }
+
+    /**
+     * Tells controller that we're ready to accept ovsdb node loop.
+     */
+    public void run() throws InterruptedException {
+        initEventLoopGroup();
+        startAcceptingConnections();
+    }
+
+    /**
+     * Adds channel pipiline to handle a new connected node.
+     */
+    private class OnosCommunicationChannelInitializer
+            extends ChannelInitializer<SocketChannel> {
+        protected void initChannel(SocketChannel channel) throws Exception {
+            log.info("New channel created");
+            channel.pipeline().addLast(new StringEncoder(CharsetUtil.UTF_8));
+            channel.pipeline().addLast(new MessageDecoder());
+            handleNewNodeConnection(channel);
+
+        }
+    }
+
+    /**
+     * Handles the new connection of a node.
+     *
+     * @param channel the channel to use.
+     */
+    private void handleNewNodeConnection(final Channel channel) {
+        executorService.execute(new Runnable() {
+            @Override
+            public void run() {
+                log.info("Handle new node connection");
+
+                IpAddress ipAddress = IpAddress
+                        .valueOf(((InetSocketAddress) channel.remoteAddress())
+                                .getAddress().getHostAddress());
+                long port = ((InetSocketAddress) channel.remoteAddress())
+                        .getPort();
+
+                log.info("Get connection from ip address {} : {}",
+                         ipAddress.toString(), port);
+
+                OvsdbNodeId nodeId = new OvsdbNodeId(ipAddress, port);
+                OvsdbProviderService ovsdbProviderService = getNodeInstance(nodeId,
+                                                                            agent,
+                                                                            monitorCallback,
+                                                                            channel);
+                ovsdbProviderService.setConnection(true);
+                OvsdbJsonRpcHandler ovsdbJsonRpcHandler = new OvsdbJsonRpcHandler(
+                                                                                  nodeId);
+                ovsdbJsonRpcHandler
+                        .setOvsdbProviderService(ovsdbProviderService);
+                channel.pipeline().addLast(ovsdbJsonRpcHandler);
+
+                ovsdbProviderService.nodeAdded();
+                ChannelFuture closeFuture = channel.closeFuture();
+                closeFuture
+                        .addListener(new ChannelConnectionListener(
+                                                                   ovsdbProviderService));
+            }
+        });
+    }
+
+    /**
+     * Gets an ovsdb client instance.
+     *
+     * @param nodeId data ovsdb node id
+     * @param agent OvsdbAgent
+     * @param monitorCallback Callback
+     * @param channel Channel
+     * @return OvsdbProviderService instance
+     */
+    protected OvsdbProviderService getNodeInstance(OvsdbNodeId nodeId,
+                                                   OvsdbAgent agent,
+                                                   Callback monitorCallback,
+                                                   Channel channel) {
+        OvsdbProviderService ovsdbProviderService = new DefaultOvsdbClient(
+                                                                           nodeId);
+        ovsdbProviderService.setAgent(agent);
+        ovsdbProviderService.setCallback(monitorCallback);
+        ovsdbProviderService.setChannel(channel);
+        return ovsdbProviderService;
+    }
+
+    /**
+     * Starts controller.
+     *
+     * @param agent OvsdbAgent
+     * @param monitorCallback Callback
+     */
+    public void start(OvsdbAgent agent, Callback monitorCallback) {
+        this.agent = agent;
+        this.monitorCallback = monitorCallback;
+        try {
+            this.run();
+        } catch (InterruptedException e) {
+            log.warn("Interrupted while waiting to start");
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    /**
+     * Stops controller.
+     *
+     */
+    public void stop() {
+        workerGroup.shutdownGracefully();
+        bossGroup.shutdownGracefully();
+    }
+}