diff --git a/modules.defs b/modules.defs
index f574d9d..555e32d 100644
--- a/modules.defs
+++ b/modules.defs
@@ -253,6 +253,7 @@
     '//protocols/p4runtime:onos-protocols-p4runtime-oar',
     '//protocols/gnmi:onos-protocols-gnmi-oar',
     '//protocols/xmpp/core:onos-protocols-xmpp-core-oar',
+    '//protocols/xmpp/pubsub:onos-protocols-xmpp-pubsub-oar',
 ]
 
 MODELS = [
diff --git a/protocols/xmpp/core/api/src/main/java/org/onosproject/xmpp/core/XmppController.java b/protocols/xmpp/core/api/src/main/java/org/onosproject/xmpp/core/XmppController.java
index 8b500a3..a16216d 100644
--- a/protocols/xmpp/core/api/src/main/java/org/onosproject/xmpp/core/XmppController.java
+++ b/protocols/xmpp/core/api/src/main/java/org/onosproject/xmpp/core/XmppController.java
@@ -46,18 +46,20 @@
     void removeXmppDeviceListener(XmppDeviceListener deviceListener);
 
     /**
-     * Register a listener for IQ stanza of XMPP protocol.
+     * Register a listener for IQ stanzas containing specific XML namespace.
      *
      * @param iqListener the listener to notify
+     * @param namespace the XML namespace to observe
      */
-    void addXmppIqListener(XmppIqListener iqListener);
+    void addXmppIqListener(XmppIqListener iqListener, String namespace);
 
     /**
-     * Unregister a listener for IQ stanza of XMPP protocol.
+     * Unregister a listener for IQ stanzas containing specific XML namespace.
      *
      * @param iqListener the listener to unregister
+     * @param namespace the XML namespace to observe
      */
-    void removeXmppIqListener(XmppIqListener iqListener);
+    void removeXmppIqListener(XmppIqListener iqListener, String namespace);
 
     /**
      * Register a listener for Message stanza of XMPP protocol.
diff --git a/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppControllerImpl.java b/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppControllerImpl.java
index 228aa47..44db54d 100644
--- a/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppControllerImpl.java
+++ b/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppControllerImpl.java
@@ -16,11 +16,14 @@
 
 package org.onosproject.xmpp.core.ctl;
 
+import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Maps;
-
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Multimaps;
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Modified;
 import org.apache.felix.scr.annotations.Property;
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
@@ -83,7 +86,7 @@
     // listener declaration
     protected Set<XmppDeviceListener> xmppDeviceListeners = new CopyOnWriteArraySet<XmppDeviceListener>();
 
-    protected Set<XmppIqListener> xmppIqListeners = new CopyOnWriteArraySet<XmppIqListener>();
+    Multimap<String, XmppIqListener> xmppIqListeners = Multimaps.synchronizedSetMultimap(HashMultimap.create());
     protected Set<XmppMessageListener> xmppMessageListeners = new CopyOnWriteArraySet<XmppMessageListener>();
     protected Set<XmppPresenceListener> xmppPresenceListeners = new CopyOnWriteArraySet<XmppPresenceListener>();
 
@@ -97,12 +100,19 @@
 
     @Activate
     public void activate(ComponentContext context) {
-        log.info("XmppControllerImpl started.");
         coreService.registerApplication(APP_ID, this::cleanup);
         cfgService.registerProperties(getClass());
         deviceFactory.init(agent);
         xmppServer.setConfiguration(context.getProperties());
         xmppServer.start(deviceFactory);
+        log.info("XmppControllerImpl started.");
+    }
+
+    @Modified
+    public void modified(ComponentContext context) {
+        xmppServer.stop();
+        xmppServer.setConfiguration(context.getProperties());
+        xmppServer.start(deviceFactory);
     }
 
     @Deactivate
@@ -135,13 +145,13 @@
     }
 
     @Override
-    public void addXmppIqListener(XmppIqListener iqListener) {
-        xmppIqListeners.add(iqListener);
+    public void addXmppIqListener(XmppIqListener iqListener, String namespace) {
+        xmppIqListeners.put(namespace, iqListener);
     }
 
     @Override
-    public void removeXmppIqListener(XmppIqListener iqListener) {
-        xmppIqListeners.remove(iqListener);
+    public void removeXmppIqListener(XmppIqListener iqListener, String namespace) {
+        xmppIqListeners.remove(namespace, iqListener);
     }
 
     @Override
@@ -199,19 +209,33 @@
         @Override
         public void processUpstreamEvent(XmppDeviceId deviceId, Packet packet) {
             if (packet instanceof IQ) {
-                for (XmppIqListener iqListener : xmppIqListeners) {
-                    iqListener.handleIqStanza((IQ) packet);
-                }
+                IQ iq = (IQ) packet;
+                String namespace = iq.getChildElement().getNamespace().getURI();
+                notifyIqListeners(iq, namespace);
             }
             if (packet instanceof Message) {
-                for (XmppMessageListener messageListener : xmppMessageListeners) {
-                    messageListener.handleMessageStanza((Message) packet);
-                }
+                notifyMessageListeners((Message) packet);
             }
             if (packet instanceof Presence) {
-                for (XmppPresenceListener presenceListener : xmppPresenceListeners) {
-                    presenceListener.handlePresenceStanza((Presence) packet);
-                }
+                notifyPresenceListeners((Presence) packet);
+            }
+        }
+
+        private void notifyPresenceListeners(Presence packet) {
+            for (XmppPresenceListener presenceListener : xmppPresenceListeners) {
+                presenceListener.handlePresenceStanza((Presence) packet);
+            }
+        }
+
+        private void notifyMessageListeners(Message message) {
+            for (XmppMessageListener messageListener : xmppMessageListeners) {
+                messageListener.handleMessageStanza(message);
+            }
+        }
+
+        private void notifyIqListeners(IQ iq, String namespace) {
+            for (XmppIqListener iqListener : xmppIqListeners.get(namespace)) {
+                iqListener.handleIqStanza(iq);
             }
         }
 
diff --git a/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppServer.java b/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppServer.java
index 3913d64..2bc96fd 100644
--- a/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppServer.java
+++ b/protocols/xmpp/core/ctl/src/main/java/org/onosproject/xmpp/core/ctl/XmppServer.java
@@ -108,7 +108,6 @@
     }
 
     private void configureBootstrap(ServerBootstrap bootstrap) {
-        bootstrap.option(ChannelOption.TCP_NODELAY, true);
         bootstrap.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
         bootstrap.option(ChannelOption.SO_RCVBUF, 2048);
     }
diff --git a/protocols/xmpp/core/ctl/src/test/java/org/onosproject/xmpp/core/ctl/XmppControllerImplTest.java b/protocols/xmpp/core/ctl/src/test/java/org/onosproject/xmpp/core/ctl/XmppControllerImplTest.java
index fb19ee1..75780e5 100644
--- a/protocols/xmpp/core/ctl/src/test/java/org/onosproject/xmpp/core/ctl/XmppControllerImplTest.java
+++ b/protocols/xmpp/core/ctl/src/test/java/org/onosproject/xmpp/core/ctl/XmppControllerImplTest.java
@@ -22,6 +22,9 @@
 import java.util.Hashtable;
 
 import com.google.common.collect.ImmutableSet;
+import org.dom4j.Element;
+import org.dom4j.Namespace;
+import org.dom4j.tree.DefaultElement;
 import org.easymock.EasyMock;
 import org.junit.After;
 import org.junit.Before;
@@ -69,6 +72,8 @@
     XmppDevice device3;
     XmppDeviceId jid3;
 
+    final String testNamespace = "testns";
+
     /**
      * Test harness for a device listener.
      */
@@ -133,7 +138,7 @@
         testXmppDeviceListener = new TestXmppDeviceListener();
         controller.addXmppDeviceListener(testXmppDeviceListener);
         testXmppIqListener = new TestXmppIqListener();
-        controller.addXmppIqListener(testXmppIqListener);
+        controller.addXmppIqListener(testXmppIqListener, testNamespace);
         testXmppMessageListener = new TestXmppMessageListener();
         controller.addXmppMessageListener(testXmppMessageListener);
         testXmppPresenceListener = new TestXmppPresenceListener();
@@ -166,7 +171,7 @@
     @After
     public void tearDown() {
         controller.removeXmppDeviceListener(testXmppDeviceListener);
-        controller.removeXmppIqListener(testXmppIqListener);
+        controller.removeXmppIqListener(testXmppIqListener, testNamespace);
         controller.removeXmppMessageListener(testXmppMessageListener);
         controller.removeXmppPresenceListener(testXmppPresenceListener);
         controller.deactivate();
@@ -215,7 +220,9 @@
     @Test
     public void handlePackets() {
         // IQ packets
-        Packet iq = new IQ();
+        IQ iq = new IQ();
+        Element element = new DefaultElement("pubsub", Namespace.get(testNamespace));
+        iq.setChildElement(element);
         agent.processUpstreamEvent(jid1, iq);
         assertThat(testXmppIqListener.handledIqs, hasSize(1));
         agent.processUpstreamEvent(jid2, iq);
diff --git a/protocols/xmpp/pom.xml b/protocols/xmpp/pom.xml
index 6a16076..1675916 100644
--- a/protocols/xmpp/pom.xml
+++ b/protocols/xmpp/pom.xml
@@ -10,14 +10,14 @@
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>onos-protocols-xmpp</artifactId>
-    <description>ONOS XMPP Protocol subsystem</description>
     <packaging>pom</packaging>
+    <description>ONOS XMPP Protocol subsystem</description>
 
     <modules>
         <module>core</module>
+        <module>pubsub</module>
     </modules>
 
-
     <build>
         <plugins>
             <plugin>
diff --git a/protocols/xmpp/pubsub/BUCK b/protocols/xmpp/pubsub/BUCK
new file mode 100644
index 0000000..9a69e4c
--- /dev/null
+++ b/protocols/xmpp/pubsub/BUCK
@@ -0,0 +1,20 @@
+BUNDLES = [
+    '//protocols/xmpp/core/api:onos-protocols-xmpp-core-api',
+    '//protocols/xmpp/pubsub/api:onos-protocols-xmpp-pubsub-api',
+    '//protocols/xmpp/pubsub/ctl:onos-protocols-xmpp-pubsub-ctl',
+    '//lib:tinder-xmpp',
+    '//lib:concurrent-hashmap',
+    '//lib:gnu-idn',
+]
+
+onos_app(
+    app_name = 'org.onosproject.protocols.xmpp.pubsub',
+    title = 'XMPP Publish/Subscribe protocol extension subsystem',
+    category = 'Protocol',
+    url = 'http://onosproject.org',
+    description = 'XMPP Publish/Subscribe protocol extension subsystem',
+    included_bundles = BUNDLES,
+    required_apps = [
+        'org.onosproject.protocols.xmpp',
+    ]
+)
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/api/BUCK b/protocols/xmpp/pubsub/api/BUCK
new file mode 100644
index 0000000..d856754
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/BUCK
@@ -0,0 +1,9 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//core/api:onos-api',
+    '//lib:tinder-xmpp',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/api/pom.xml b/protocols/xmpp/pubsub/api/pom.xml
new file mode 100644
index 0000000..5357060
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/pom.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2018-present Open Networking Foundation
+  ~
+  ~ 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>onos-protocols-xmpp-pubsub</artifactId>
+        <groupId>org.onosproject</groupId>
+        <version>1.13.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>onos-protocols-xmpp-pubsub-api</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubConstants.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubConstants.java
new file mode 100644
index 0000000..a705263
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubConstants.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import com.google.common.collect.ImmutableMap;
+import org.xmpp.packet.PacketError;
+
+/**
+ * Constant values used across PubSub extension.
+ */
+public final class XmppPubSubConstants {
+
+    public static final String PUBSUB_NAMESPACE = "http://jabber.org/protocol/pubsub";
+    public static final String PUBSUB_EVENT_NS = "http://jabber.org/protocol/pubsub#event";
+    public static final String PUBSUB_ERROR_NS = "http://jabber.org/protocol/pubsub#errors";
+    public static final String PUBSUB_ELEMENT = "pubsub";
+    public static final ImmutableMap<PubSubApplicationCondition, PacketError.Condition>
+            APP_BASE_CONDITION_MAP = new ImmutableMap.Builder<PubSubApplicationCondition, PacketError.Condition>()
+            .put(PubSubApplicationCondition.ITEM_NOT_FOUND, PacketError.Condition.item_not_found)
+            .put(PubSubApplicationCondition.NOT_SUBSCRIBED, PacketError.Condition.unexpected_request)
+            .build();
+
+    public enum PubSubApplicationCondition {
+        NOT_SUBSCRIBED,
+        ITEM_NOT_FOUND
+    }
+
+    private XmppPubSubConstants() {
+    }
+
+    public enum Method {
+        SUBSCRIBE,
+        UNSUBSCRIBE,
+        PUBLISH,
+        RETRACT
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubController.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubController.java
new file mode 100644
index 0000000..ee6e340
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubController.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.xmpp.pubsub.model.XmppEventNotification;
+import org.onosproject.xmpp.pubsub.model.XmppPubSubError;
+
+/**
+ * Responsible for controlling Publish/Subscribe functionality of XMPP.
+ */
+public interface XmppPubSubController {
+
+    /**
+     * Method allows to send event notification to XMPP device.
+     *
+     * @param deviceId identifier of underlaying device
+     * @param eventNotification payload of event notification
+     */
+    void notify(DeviceId deviceId, XmppEventNotification eventNotification);
+
+    /**
+     * Method allows to send error notification to XMPP device.
+     *
+     * @param deviceId identifier of underlaying device
+     * @param error payload of error notification
+     */
+    void notifyError(DeviceId deviceId, XmppPubSubError error);
+
+    /**
+     * Register listener for Publish/Retract events.
+     *
+     * @param xmppPublishEventsListener listener to notify
+     */
+    void addXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener);
+
+    /**
+     * Unregister listener for Publish/Retract events.
+     *
+     * @param xmppPublishEventsListener listener to unregister
+     */
+    void removeXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener);
+
+    /**
+     * Register listener for Subscribe/Unsubscribe events.
+     *
+     * @param xmppSubscribeEventsListener listener to notify
+     */
+    void addXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener);
+
+    /**
+     * Unregister listener for Subscribe/Unsubscribe events.
+     *
+     * @param xmppSubscribeEventsListener listener to unregister
+     */
+    void removeXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener);
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubEvent.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubEvent.java
new file mode 100644
index 0000000..d4c3b76
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPubSubEvent.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+/**
+ * Abstracts event of XMPP Publish/Subscribe.
+ */
+public final class XmppPubSubEvent<S> {
+
+    /**
+     * Types of XMPP Publish/Subscribe messages.
+     */
+    public enum Type {
+        SUBSCRIBE,
+        UNSUBSCRIBE,
+        PUBLISH,
+        RETRACT
+    }
+
+    private final Type type;
+    private final S subject;
+
+    public XmppPubSubEvent(Type type, S subject) {
+        this.type = type;
+        this.subject = subject;
+    }
+
+    /**
+     * Returns the type of event.
+     *
+     * @return event type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns the subject of event.
+     *
+     * @return subject to which this event pertains
+     */
+    public S subject() {
+        return subject;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("type", type())
+                .add("subject", subject()).toString();
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java
new file mode 100644
index 0000000..406b1d6
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppPublishEventsListener.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import org.onosproject.xmpp.pubsub.model.XmppPublish;
+import org.onosproject.xmpp.pubsub.model.XmppRetract;
+
+/**
+ * Allows for providers interested in XMPP Publish/Retract events to be notified.
+ */
+public interface XmppPublishEventsListener {
+
+    /**
+     * Method for handling incoming XMPP Publish message.
+     *
+     * @param publishEvent event related to incoming XMPP Publish message
+     */
+    void handlePublish(XmppPublish publishEvent);
+
+    /**
+     * Method for handling incoming XMPP Retract message.
+     *
+     * @param retractEvent event related to incoming XMPP Retract message
+     */
+    void handleRetract(XmppRetract retractEvent);
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppSubscribeEventsListener.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppSubscribeEventsListener.java
new file mode 100644
index 0000000..4a5d42d
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/XmppSubscribeEventsListener.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub;
+
+import org.onosproject.xmpp.pubsub.model.XmppSubscribe;
+import org.onosproject.xmpp.pubsub.model.XmppUnsubscribe;
+
+/**
+ * Allows for providers interested in XMPP Subscribe/Unsubscribe events to be notified.
+ */
+public interface XmppSubscribeEventsListener {
+
+    /**
+     * Method for handling incoming XMPP Subscribe message.
+     *
+     * @param subscribeEvent event related to incoming XMPP Subscribe message
+     */
+    void handleSubscribe(XmppSubscribe subscribeEvent);
+
+    /**
+     * Method for handling incoming XMPP Unsubscribe message.
+     *
+     * @param unsubscribeEvent event related to incoming XMPP Unsubscribe message
+     */
+    void handleUnsubscribe(XmppUnsubscribe unsubscribeEvent);
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppEventNotification.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppEventNotification.java
new file mode 100644
index 0000000..a4e64b7
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppEventNotification.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.dom4j.Element;
+import org.xmpp.packet.Message;
+
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PUBSUB_EVENT_NS;
+
+/**
+ * Abstracts Event Notification message of XMPP PubSub protocol.
+ */
+public class XmppEventNotification extends Message {
+
+    /**
+     * Constructor for XmppEventNotification class. It generates representation
+     * of XMPP NOTIFY message.
+     *
+     * @param node node attribute of PubSub extension
+     * @param payload XML payload for XMPP NOTIFY message
+     */
+    public XmppEventNotification(String node, Element payload) {
+        super(docFactory.createDocument().addElement("message"));
+        this.addChildElement("event", PUBSUB_EVENT_NS);
+        Element items = docFactory.createElement("items");
+        items.addAttribute("node", node);
+        items.add(payload);
+        this.getElement().element("event").add(items);
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPubSubError.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPubSubError.java
new file mode 100644
index 0000000..dcf60d2
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPubSubError.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.xmpp.packet.PacketError;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.APP_BASE_CONDITION_MAP;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PUBSUB_ERROR_NS;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PubSubApplicationCondition;
+
+/**
+ * Abstracts Publish/Subscribe error message of XMPP PubSub protocol.
+ */
+public class XmppPubSubError {
+
+    private PacketError.Condition baseCondition;
+    private PubSubApplicationCondition applicationCondition;
+
+    public XmppPubSubError(PubSubApplicationCondition applicationCondition) {
+        this.applicationCondition = applicationCondition;
+        this.baseCondition = setBasedOnAppCondition();
+    }
+
+    private PacketError.Condition setBasedOnAppCondition() {
+        return APP_BASE_CONDITION_MAP.getOrDefault(this.applicationCondition,
+                                                   PacketError.Condition.undefined_condition);
+    }
+
+    public PacketError asPacketError() {
+        PacketError packetError = new PacketError(this.baseCondition);
+        if (applicationCondition != null) {
+            packetError.setApplicationCondition(applicationCondition.toString().toLowerCase(),
+                                                PUBSUB_ERROR_NS);
+        }
+        return packetError;
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPublish.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPublish.java
new file mode 100644
index 0000000..97dc2a7
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppPublish.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.dom4j.Element;
+import org.xmpp.packet.IQ;
+
+/**
+ * Abstracts Publish message of XMPP PubSub protocol.
+ */
+public class XmppPublish extends IQ {
+
+    private String jabberId;
+    private String nodeID;
+    private Element item;
+    private String itemID;
+    private Element itemEntry;
+    private String itemEntryNamespace;
+
+    /**
+     * Constructor for XmppPublish class.
+     * @param iq XMPP IQ stanza, which XmppPublish is based on.
+     */
+    public XmppPublish(IQ iq) {
+        super(iq.getElement());
+        this.jabberId = this.fromJID.toString();
+        this.nodeID = this.getChildElement().element("publish").attribute("node").getValue();
+        this.item = this.getChildElement().element("publish").element("item");
+        this.itemID = this.item.attribute("id").getValue();
+        this.itemEntry = this.item.element("entry");
+        this.itemEntryNamespace = this.itemEntry.getNamespaceURI();
+    }
+
+    public String getJabberId() {
+        return this.jabberId;
+    }
+
+    public String getNodeID() {
+        return this.nodeID;
+    }
+
+    public Element getItem() {
+        return this.item;
+    }
+
+    public String getItemID() {
+        return this.itemID;
+    }
+
+    public Element getItemEntry() {
+        return this.itemEntry;
+    }
+
+    public String getItemEntryNamespace() {
+        return this.itemEntryNamespace;
+    }
+
+    @Override
+    public String toString() {
+        return "Publish{" +
+                "JID=" + fromJID +
+                "NodeID=" + this.getNodeID() +
+                "Item=\n" + this.getItem().asXML() +
+                '}';
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppRetract.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppRetract.java
new file mode 100644
index 0000000..83308dd
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppRetract.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.xmpp.packet.IQ;
+
+/**
+ * Abstracts Retract message of XMPP PubSub protocol.
+ */
+public class XmppRetract extends IQ {
+
+    private String jabberId;
+    private String nodeID;
+    private String itemID;
+
+    /**
+     * Constructor for XmppRetract class.
+     *
+     * @param iq XMPP IQ stanza, which XmppRetract is based on.
+     */
+    public XmppRetract(IQ iq)  {
+        super(iq.getElement());
+        this.jabberId = this.fromJID.toString();
+        this.nodeID = this.getChildElement().element("retract").attribute("node").getValue();
+        this.itemID = this.getChildElement().element("retract").element("item").attribute("id").getValue();
+    }
+
+    public String getJabberId() {
+        return this.jabberId;
+    }
+
+    public String getNodeID() {
+        return this.nodeID;
+    }
+
+    public String getItemID() {
+        return this.itemID;
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppSubscribe.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppSubscribe.java
new file mode 100644
index 0000000..c3040d5
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppSubscribe.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.xmpp.packet.IQ;
+
+/**
+ * Abstracts Subscribe message of XMPP PubSub protocol.
+ */
+public class XmppSubscribe extends IQ {
+
+    private String jabberId;
+    private String nodeID;
+
+    /**
+     * Constructor for XmppSubscribe class.
+     *
+     * @param iq XMPP IQ stanza, which XmppSubscribe is based on.
+     */
+    public XmppSubscribe(IQ iq)  {
+        super(iq.getElement());
+        this.jabberId = this.fromJID.toString();
+        this.nodeID = this.getChildElement().element("subscribe").attribute("node").getValue();
+    }
+
+    public String getJabberId() {
+        return this.jabberId;
+    }
+
+    public String getNodeID() {
+        return this.nodeID;
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppUnsubscribe.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppUnsubscribe.java
new file mode 100644
index 0000000..a256c61
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/XmppUnsubscribe.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.model;
+
+import org.xmpp.packet.IQ;
+
+/**
+ * Abstracts Unsubscribe message of XMPP PubSub protocol.
+ */
+public class XmppUnsubscribe extends IQ {
+
+    private String jabberId;
+    private String nodeID;
+
+    /**
+     * Constructor for XmppUnsubscribe class.
+     *
+     * @param iq XMPP IQ stanza, which XmppUnsubscribe is based on.
+     */
+    public XmppUnsubscribe(IQ iq)  {
+        super(iq.getElement());
+        this.jabberId = this.fromJID.toString();
+        this.nodeID = this.getChildElement().element("unsubscribe").attribute("node").getValue();
+    }
+
+    public String getJabberId() {
+        return this.jabberId;
+    }
+
+    public String getNodeID() {
+        return this.nodeID;
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/package-info.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/package-info.java
new file mode 100644
index 0000000..4196048
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/model/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 for implementation of XMPP Publish/Subscribe abstractions.
+ */
+package org.onosproject.xmpp.pubsub.model;
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/package-info.java b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/package-info.java
new file mode 100644
index 0000000..4021f65
--- /dev/null
+++ b/protocols/xmpp/pubsub/api/src/main/java/org/onosproject/xmpp/pubsub/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 for implementation of XMPP Publish/Subscribe APIs.
+ */
+package org.onosproject.xmpp.pubsub;
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/ctl/BUCK b/protocols/xmpp/pubsub/ctl/BUCK
new file mode 100644
index 0000000..e28ec52
--- /dev/null
+++ b/protocols/xmpp/pubsub/ctl/BUCK
@@ -0,0 +1,19 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//core/api:onos-api',
+    '//lib:tinder-xmpp',
+    '//lib:concurrent-hashmap',
+    '//lib:gnu-idn',
+    '//protocols/xmpp/pubsub/api:onos-protocols-xmpp-pubsub-api',
+    '//protocols/xmpp/core/api:onos-protocols-xmpp-core-api',
+]
+
+TEST_DEPS = [
+    '//lib:TEST',
+    '//core/api:onos-api-tests',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+    test_deps = TEST_DEPS,
+)
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/ctl/pom.xml b/protocols/xmpp/pubsub/ctl/pom.xml
new file mode 100644
index 0000000..d3d23fa
--- /dev/null
+++ b/protocols/xmpp/pubsub/ctl/pom.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2018-present Open Networking Foundation
+  ~
+  ~ 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>onos-protocols-xmpp-pubsub</artifactId>
+        <groupId>org.onosproject</groupId>
+        <version>1.13.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>onos-protocols-xmpp-pubsub-ctl</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-protocols-xmpp-pubsub-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-protocols-xmpp-core-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerImpl.java b/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerImpl.java
new file mode 100644
index 0000000..cb9900d
--- /dev/null
+++ b/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerImpl.java
@@ -0,0 +1,213 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.ctl;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.dom4j.Element;
+import org.onosproject.net.DeviceId;
+import org.onosproject.xmpp.core.XmppController;
+import org.onosproject.xmpp.core.XmppDeviceId;
+import org.onosproject.xmpp.core.XmppIqListener;
+import org.onosproject.xmpp.pubsub.XmppPubSubConstants;
+import org.onosproject.xmpp.pubsub.XmppPubSubController;
+import org.onosproject.xmpp.pubsub.XmppPublishEventsListener;
+import org.onosproject.xmpp.pubsub.XmppSubscribeEventsListener;
+import org.onosproject.xmpp.pubsub.model.XmppEventNotification;
+import org.onosproject.xmpp.pubsub.model.XmppPubSubError;
+import org.onosproject.xmpp.pubsub.model.XmppPublish;
+import org.onosproject.xmpp.pubsub.model.XmppRetract;
+import org.onosproject.xmpp.pubsub.model.XmppSubscribe;
+import org.onosproject.xmpp.pubsub.model.XmppUnsubscribe;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.xmpp.packet.IQ;
+import org.xmpp.packet.JID;
+
+import java.util.Set;
+import java.util.concurrent.CopyOnWriteArraySet;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PUBSUB_ELEMENT;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PUBSUB_NAMESPACE;
+
+/**
+ * The main class implementing XMPP Publish/Subscribe extension.
+ * It listens to IQ stanzas and generates PubSub events based on the payload.
+ */
+@Component(immediate = true)
+@Service
+public class XmppPubSubControllerImpl implements XmppPubSubController {
+
+    private static final Logger log =
+            LoggerFactory.getLogger(XmppPubSubControllerImpl.class);
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected XmppController xmppController;
+
+    protected Set<XmppPublishEventsListener> xmppPublishEventsListeners =
+            new CopyOnWriteArraySet<XmppPublishEventsListener>();
+    protected Set<XmppSubscribeEventsListener> xmppSubscribeEventsListeners =
+            new CopyOnWriteArraySet<XmppSubscribeEventsListener>();
+
+    protected XmppIqListener iqListener = new InternalXmppIqListener();
+
+    @Activate
+    public void activate() {
+        xmppController.addXmppIqListener(iqListener, PUBSUB_NAMESPACE);
+        log.info("Started.");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        xmppController.removeXmppIqListener(iqListener, PUBSUB_NAMESPACE);
+        log.info("Stopped");
+    }
+
+    @Override
+    public void notify(DeviceId deviceId, XmppEventNotification eventNotification) {
+        XmppDeviceId xmppDeviceId = asXmppDeviceId(deviceId);
+        xmppController.getDevice(xmppDeviceId).sendPacket(eventNotification);
+    }
+
+    @Override
+    public void notifyError(DeviceId deviceId, XmppPubSubError error) {
+        XmppDeviceId xmppDeviceId = asXmppDeviceId(deviceId);
+        xmppController.getDevice(xmppDeviceId).sendError(error.asPacketError());
+    }
+
+    private XmppDeviceId asXmppDeviceId(DeviceId deviceId) {
+        String[] parts = deviceId.toString().split(":");
+        JID jid = new JID(parts[1]);
+        return new XmppDeviceId(jid);
+    }
+
+    @Override
+    public void addXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener) {
+        xmppPublishEventsListeners.add(xmppPublishEventsListener);
+    }
+
+    @Override
+    public void removeXmppPublishEventsListener(XmppPublishEventsListener xmppPublishEventsListener) {
+        xmppPublishEventsListeners.remove(xmppPublishEventsListener);
+    }
+
+    @Override
+    public void addXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener) {
+        xmppSubscribeEventsListeners.add(xmppSubscribeEventsListener);
+    }
+
+    @Override
+    public void removeXmppSubscribeEventsListener(XmppSubscribeEventsListener xmppSubscribeEventsListener) {
+        xmppSubscribeEventsListeners.remove(xmppSubscribeEventsListener);
+    }
+
+    private class InternalXmppIqListener implements XmppIqListener {
+        @Override
+        public void handleIqStanza(IQ iq) {
+            if (isPubSub(iq)) {
+                notifyListeners(iq);
+            }
+        }
+    }
+
+    private void notifyListeners(IQ iq) {
+        XmppPubSubConstants.Method method = getMethod(iq);
+        checkNotNull(method);
+        switch (method) {
+            case SUBSCRIBE:
+                XmppSubscribe subscribe = new XmppSubscribe(iq);
+                notifyXmppSubscribe(subscribe);
+                break;
+            case UNSUBSCRIBE:
+                XmppUnsubscribe unsubscribe = new XmppUnsubscribe(iq);
+                notifyXmppUnsubscribe(unsubscribe);
+                break;
+            case PUBLISH:
+                XmppPublish publish = new XmppPublish(iq);
+                notifyXmppPublish(publish);
+                break;
+            case RETRACT:
+                XmppRetract retract = new XmppRetract(iq);
+                notifyXmppRetract(retract);
+                break;
+            default:
+                break;
+        }
+    }
+
+    private void notifyXmppRetract(XmppRetract retractEvent) {
+        for (XmppPublishEventsListener listener : xmppPublishEventsListeners) {
+            listener.handleRetract(retractEvent);
+        }
+    }
+
+    private void notifyXmppPublish(XmppPublish publishEvent) {
+        for (XmppPublishEventsListener listener : xmppPublishEventsListeners) {
+            listener.handlePublish(publishEvent);
+        }
+    }
+
+    private void notifyXmppUnsubscribe(XmppUnsubscribe unsubscribeEvent) {
+        for (XmppSubscribeEventsListener listener : xmppSubscribeEventsListeners) {
+            listener.handleUnsubscribe(unsubscribeEvent);
+        }
+    }
+
+    private void notifyXmppSubscribe(XmppSubscribe subscribeEvent) {
+        for (XmppSubscribeEventsListener listener : xmppSubscribeEventsListeners) {
+            listener.handleSubscribe(subscribeEvent);
+        }
+    }
+
+    private boolean isPubSub(IQ iq) {
+        Element pubsub = iq.getElement().element(PUBSUB_ELEMENT);
+        if (pubsub != null && pubsub.getNamespaceURI().equals(PUBSUB_NAMESPACE)) {
+            return true;
+        }
+        return false;
+    }
+
+    public static XmppPubSubConstants.Method getMethod(IQ iq) {
+        Element pubsubElement = iq.getChildElement();
+        Element methodElement = getChildElement(pubsubElement);
+        String name = methodElement.getName();
+        switch (name) {
+            case "subscribe":
+                return XmppPubSubConstants.Method.SUBSCRIBE;
+            case "unsubscribe":
+                return XmppPubSubConstants.Method.UNSUBSCRIBE;
+            case "publish":
+                return XmppPubSubConstants.Method.PUBLISH;
+            case "retract":
+                return XmppPubSubConstants.Method.RETRACT;
+            default:
+                break;
+        }
+        return null;
+    }
+
+    public static Element getChildElement(Element element) {
+        Element child = (Element) element.elements().get(0); // the first element is related to pubsub operation
+        return child;
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/package-info.java b/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/package-info.java
new file mode 100644
index 0000000..ad13be7
--- /dev/null
+++ b/protocols/xmpp/pubsub/ctl/src/main/java/org/onosproject/xmpp/pubsub/ctl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 for implementation of XMPP Publish/Subscribe elements.
+ */
+package org.onosproject.xmpp.pubsub.ctl;
\ No newline at end of file
diff --git a/protocols/xmpp/pubsub/ctl/src/test/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerTest.java b/protocols/xmpp/pubsub/ctl/src/test/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerTest.java
new file mode 100644
index 0000000..28f799d
--- /dev/null
+++ b/protocols/xmpp/pubsub/ctl/src/test/java/org/onosproject/xmpp/pubsub/ctl/XmppPubSubControllerTest.java
@@ -0,0 +1,341 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.xmpp.pubsub.ctl;
+
+import com.google.common.collect.Lists;
+import org.dom4j.Document;
+import org.dom4j.Element;
+import org.dom4j.Namespace;
+import org.dom4j.tree.DefaultElement;
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.net.DeviceId;
+import org.onosproject.xmpp.core.XmppController;
+import org.onosproject.xmpp.core.XmppDevice;
+import org.onosproject.xmpp.core.XmppDeviceId;
+import org.onosproject.xmpp.core.XmppDeviceListener;
+import org.onosproject.xmpp.core.XmppIqListener;
+import org.onosproject.xmpp.core.XmppMessageListener;
+import org.onosproject.xmpp.core.XmppPresenceListener;
+import org.onosproject.xmpp.core.XmppSession;
+import org.onosproject.xmpp.pubsub.XmppPubSubConstants;
+import org.onosproject.xmpp.pubsub.XmppPublishEventsListener;
+import org.onosproject.xmpp.pubsub.XmppSubscribeEventsListener;
+import org.onosproject.xmpp.pubsub.model.XmppEventNotification;
+import org.onosproject.xmpp.pubsub.model.XmppPubSubError;
+import org.onosproject.xmpp.pubsub.model.XmppPublish;
+import org.onosproject.xmpp.pubsub.model.XmppRetract;
+import org.onosproject.xmpp.pubsub.model.XmppSubscribe;
+import org.onosproject.xmpp.pubsub.model.XmppUnsubscribe;
+import org.xmpp.packet.IQ;
+import org.xmpp.packet.Packet;
+import org.xmpp.packet.PacketError;
+
+import java.net.InetSocketAddress;
+import java.util.List;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.hamcrest.CoreMatchers.nullValue;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.onosproject.xmpp.pubsub.XmppPubSubConstants.PubSubApplicationCondition.ITEM_NOT_FOUND;
+
+/**
+ * Test class for XmppPubSubController class.
+ */
+public class XmppPubSubControllerTest {
+
+    private String nodeAttribute = "test";
+    private String node = "node";
+    private String toJid = "xmpp@onosproject.org";
+    private String fromJid = "test@xmpp.org";
+    private String pubSub = "pubsub";
+    private String publish = "publish";
+    private String retract = "retract";
+    private String subscribe = "subscribe";
+    private String unsubscribe = "unsubscribe";
+    private String item = "item";
+    private String id = "id";
+    private String itemId = "id-000";
+    private String entry = "entry";
+    private String testNamespace = "jabber:test:item";
+
+
+    XmppPubSubControllerImpl pubSubController;
+    XmppControllerAdapter xmppControllerAdapter;
+    XmppDeviceAdapter testDevice;
+
+    TestXmppPublishEventsListener testXmppPublishEventsListener;
+    TestXmppSubscribeEventsListener testXmppSubscribeEventsListener;
+
+    static class TestXmppPublishEventsListener implements XmppPublishEventsListener {
+
+        final List<XmppPublish> handledPublishMsgs = Lists.newArrayList();
+        final List<XmppRetract> handledRetractMsgs = Lists.newArrayList();
+
+        @Override
+        public void handlePublish(XmppPublish publishEvent) {
+            handledPublishMsgs.add(publishEvent);
+        }
+
+        @Override
+        public void handleRetract(XmppRetract retractEvent) {
+            handledRetractMsgs.add(retractEvent);
+        }
+    }
+
+    static class TestXmppSubscribeEventsListener implements XmppSubscribeEventsListener {
+
+        final List<XmppSubscribe> handledSubscribeMsgs = Lists.newArrayList();
+        final List<XmppUnsubscribe> handledUnsubscribeMsgs = Lists.newArrayList();
+
+
+        @Override
+        public void handleSubscribe(XmppSubscribe subscribeEvent) {
+            handledSubscribeMsgs.add(subscribeEvent);
+        }
+
+        @Override
+        public void handleUnsubscribe(XmppUnsubscribe unsubscribeEvent) {
+            handledUnsubscribeMsgs.add(unsubscribeEvent);
+        }
+    }
+
+    @Before
+    public void setUp() {
+        testDevice = new XmppDeviceAdapter();
+        xmppControllerAdapter = new XmppControllerAdapter();
+        pubSubController = new XmppPubSubControllerImpl();
+        pubSubController.xmppController = xmppControllerAdapter;
+        testXmppPublishEventsListener = new TestXmppPublishEventsListener();
+        testXmppSubscribeEventsListener = new TestXmppSubscribeEventsListener();
+        pubSubController.activate();
+    }
+
+    @Test
+    public void testActivate() {
+        assertThat(xmppControllerAdapter.iqListener, is(notNullValue()));
+    }
+
+    @Test
+    public void testDeactivate() {
+        pubSubController.deactivate();
+        assertThat(xmppControllerAdapter.iqListener, is(nullValue()));
+    }
+
+    @Test
+    public void testAddRemoveListeners() {
+        pubSubController.addXmppPublishEventsListener(testXmppPublishEventsListener);
+        assertThat(pubSubController.xmppPublishEventsListeners.size(), is(1));
+        pubSubController.addXmppSubscribeEventsListener(testXmppSubscribeEventsListener);
+        assertThat(pubSubController.xmppSubscribeEventsListeners.size(), is(1));
+        pubSubController.removeXmppPublishEventsListener(testXmppPublishEventsListener);
+        assertThat(pubSubController.xmppPublishEventsListeners.size(), is(0));
+        pubSubController.removeXmppSubscribeEventsListener(testXmppSubscribeEventsListener);
+        assertThat(pubSubController.xmppSubscribeEventsListeners.size(), is(0));
+    }
+
+    @Test
+    public void testNotifyEvent() {
+        XmppEventNotification eventNotification = new XmppEventNotification(nodeAttribute,
+                                                                            new DefaultElement(nodeAttribute));
+        pubSubController.notify(DeviceId.NONE, eventNotification);
+        assertThat(testDevice.sentPackets.size(), is(1));
+        assertThat(testDevice.sentPackets.get(0), is(eventNotification));
+    }
+
+    @Test
+    public void testNotifyError() {
+        XmppPubSubError xmppPubSubError =
+                new XmppPubSubError(ITEM_NOT_FOUND);
+        pubSubController.notifyError(DeviceId.NONE, xmppPubSubError);
+        assertThat(testDevice.sentErrors.size(), is(1));
+    }
+
+    @Test
+    public void testHandlePubSubMessages() {
+        pubSubController.addXmppPublishEventsListener(testXmppPublishEventsListener);
+        pubSubController.addXmppSubscribeEventsListener(testXmppSubscribeEventsListener);
+        XmppSubscribe xmppSubscribe = buildXmppSubscribe();
+        xmppControllerAdapter.iqListener.handleIqStanza(xmppSubscribe);
+        assertThat(testXmppSubscribeEventsListener.handledSubscribeMsgs.size(), is(1));
+        XmppUnsubscribe xmppUnsubscribe = buildXmppUnsubscribe();
+        xmppControllerAdapter.iqListener.handleIqStanza(xmppUnsubscribe);
+        assertThat(testXmppSubscribeEventsListener.handledUnsubscribeMsgs.size(), is(1));
+        XmppPublish xmppPublish = buildXmppPublish();
+        xmppControllerAdapter.iqListener.handleIqStanza(xmppPublish);
+        assertThat(testXmppPublishEventsListener.handledPublishMsgs.size(), is(1));
+        XmppRetract xmppRetract = buildXmppRetract();
+        xmppControllerAdapter.iqListener.handleIqStanza(xmppRetract);
+        assertThat(testXmppPublishEventsListener.handledRetractMsgs.size(), is(1));
+    }
+
+    private XmppSubscribe buildXmppSubscribe() {
+        IQ iq = new IQ(IQ.Type.set);
+        iq.setTo(toJid);
+        iq.setFrom(fromJid);
+        Element element = new DefaultElement(pubSub, Namespace.get(XmppPubSubConstants.PUBSUB_NAMESPACE));
+        Element childElement = new DefaultElement(subscribe);
+        childElement.addAttribute(node, nodeAttribute);
+        element.add(childElement);
+        iq.setChildElement(element);
+        XmppSubscribe xmppSubscribe = new XmppSubscribe(iq);
+        return xmppSubscribe;
+    }
+
+    private XmppUnsubscribe buildXmppUnsubscribe() {
+        IQ iq = new IQ(IQ.Type.set);
+        iq.setTo(toJid);
+        iq.setFrom(fromJid);
+        Element element = new DefaultElement(pubSub, Namespace.get(XmppPubSubConstants.PUBSUB_NAMESPACE));
+        Element childElement = new DefaultElement(unsubscribe);
+        childElement.addAttribute(node, nodeAttribute);
+        element.add(childElement);
+        iq.setChildElement(element);
+        XmppUnsubscribe xmppUnsubscribe = new XmppUnsubscribe(iq);
+        return xmppUnsubscribe;
+    }
+
+    private XmppPublish buildXmppPublish() {
+        IQ iq = new IQ(IQ.Type.set);
+        iq.setTo(toJid);
+        iq.setFrom(fromJid);
+        Element element = new DefaultElement(pubSub, Namespace.get(XmppPubSubConstants.PUBSUB_NAMESPACE));
+        Element publishElement = new DefaultElement(publish).addAttribute(node, nodeAttribute);
+        Element itemElement = new DefaultElement(item).addAttribute(id, itemId);
+        Element entryElement = new DefaultElement(entry, Namespace.get(testNamespace));
+        itemElement.add(entryElement);
+        publishElement.add(itemElement);
+        element.add(publishElement);
+        iq.setChildElement(element);
+        XmppPublish xmppPublish = new XmppPublish(iq);
+        return xmppPublish;
+    }
+
+    private XmppRetract buildXmppRetract() {
+        IQ iq = new IQ(IQ.Type.set);
+        iq.setTo(toJid);
+        iq.setFrom(fromJid);
+        Element element = new DefaultElement(pubSub, Namespace.get(XmppPubSubConstants.PUBSUB_NAMESPACE));
+        Element retractElement = new DefaultElement(retract).addAttribute(node, nodeAttribute);
+        Element itemElement = new DefaultElement(item).addAttribute(id, itemId);
+        retractElement.add(itemElement);
+        element.add(retractElement);
+        iq.setChildElement(element);
+        XmppRetract xmppRetract = new XmppRetract(iq);
+        return xmppRetract;
+    }
+
+
+    private class XmppControllerAdapter implements XmppController {
+
+        XmppIqListener iqListener;
+
+        @Override
+        public XmppDevice getDevice(XmppDeviceId xmppDeviceId) {
+            return testDevice;
+        }
+
+        @Override
+        public void addXmppDeviceListener(XmppDeviceListener deviceListener) {
+
+        }
+
+        @Override
+        public void removeXmppDeviceListener(XmppDeviceListener deviceListener) {
+
+        }
+
+        @Override
+        public void addXmppIqListener(XmppIqListener iqListener, String namespace) {
+            this.iqListener = iqListener;
+        }
+
+        @Override
+        public void removeXmppIqListener(XmppIqListener iqListener, String namespace) {
+            this.iqListener = null;
+        }
+
+        @Override
+        public void addXmppMessageListener(XmppMessageListener messageListener) {
+
+        }
+
+        @Override
+        public void removeXmppMessageListener(XmppMessageListener messageListener) {
+
+        }
+
+        @Override
+        public void addXmppPresenceListener(XmppPresenceListener presenceListener) {
+
+        }
+
+        @Override
+        public void removeXmppPresenceListener(XmppPresenceListener presenceListener) {
+
+        }
+    }
+
+    private class XmppDeviceAdapter implements XmppDevice {
+
+        final List<Packet> sentPackets = Lists.newArrayList();
+        final List<PacketError> sentErrors = Lists.newArrayList();
+
+        @Override
+        public XmppSession getSession() {
+            return null;
+        }
+
+        @Override
+        public InetSocketAddress getIpAddress() {
+            return null;
+        }
+
+        @Override
+        public void registerConnectedDevice() {
+
+        }
+
+        @Override
+        public void disconnectDevice() {
+
+        }
+
+        @Override
+        public void sendPacket(Packet packet) {
+            sentPackets.add(packet);
+        }
+
+        @Override
+        public void writeRawXml(Document document) {
+
+        }
+
+        @Override
+        public void handlePacket(Packet packet) {
+
+        }
+
+        @Override
+        public void sendError(PacketError packetError) {
+            sentErrors.add(packetError);
+        }
+
+    }
+
+}
diff --git a/protocols/xmpp/pubsub/pom.xml b/protocols/xmpp/pubsub/pom.xml
new file mode 100644
index 0000000..4024009
--- /dev/null
+++ b/protocols/xmpp/pubsub/pom.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2018-present Open Networking Foundation
+  ~
+  ~ 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>onos-protocols-xmpp</artifactId>
+        <groupId>org.onosproject</groupId>
+        <version>1.13.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>onos-protocols-xmpp-pubsub</artifactId>
+    <packaging>pom</packaging>
+    <modules>
+        <module>api</module>
+        <module>ctl</module>
+    </modules>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.igniterealtime</groupId>
+            <artifactId>tinder</artifactId>
+            <version>1.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/providers/xmpp/device/src/test/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProviderTest.java b/providers/xmpp/device/src/test/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProviderTest.java
index f87694d..15f10a7 100644
--- a/providers/xmpp/device/src/test/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProviderTest.java
+++ b/providers/xmpp/device/src/test/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProviderTest.java
@@ -232,12 +232,12 @@
         }
 
         @java.lang.Override
-        public void addXmppIqListener(XmppIqListener iqListener) {
+        public void addXmppIqListener(XmppIqListener iqListener, String namespace) {
 
         }
 
         @java.lang.Override
-        public void removeXmppIqListener(XmppIqListener iqListener) {
+        public void removeXmppIqListener(XmppIqListener iqListener, String namespace) {
 
         }