diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java
new file mode 100644
index 0000000..f663980
--- /dev/null
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java
@@ -0,0 +1,222 @@
+/*
+ * 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.openstacknetworking.impl;
+
+import com.google.common.collect.ImmutableSet;
+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.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.openstacknetworking.api.InstancePort;
+import org.onosproject.openstacknetworking.api.InstancePortEvent;
+import org.onosproject.openstacknetworking.api.InstancePortStore;
+import org.onosproject.openstacknetworking.api.InstancePortStoreDelegate;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.MapEvent;
+import org.onosproject.store.service.MapEventListener;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.slf4j.Logger;
+
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.openstacknetworking.api.Constants.OPENSTACK_NETWORKING_APP_ID;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.ACTIVE;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.INACTIVE;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.MIGRATING;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_MIGRATION_ENDED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_MIGRATION_STARTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_DETECTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_UPDATED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_VANISHED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_RESTARTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_TERMINATED;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manages the inventory of openstack instance port using a {@code ConsistentMap}.
+ */
+@Service
+@Component(immediate = true)
+public class DistributedInstancePortStore
+        extends AbstractStore<InstancePortEvent, InstancePortStoreDelegate>
+        implements InstancePortStore {
+
+    protected final Logger log = getLogger(getClass());
+
+    private static final String ERR_NOT_FOUND = " does not exist";
+    private static final String ERR_DUPLICATE = " already exists";
+
+    private static final KryoNamespace SERIALIZER_INSTANCE_PORT = KryoNamespace.newBuilder()
+            .register(KryoNamespaces.API)
+            .register(InstancePort.class)
+            .register(DefaultInstancePort.class)
+            .register(InstancePort.State.class)
+            .build();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    private final ExecutorService eventExecutor = newSingleThreadExecutor(
+            groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+    private final MapEventListener<String, InstancePort>
+            instancePortMapListener = new InstancePortMapListener();
+
+    private ConsistentMap<String, InstancePort> instancePortStore;
+
+    @Activate
+    protected void activate() {
+        ApplicationId appId = coreService.registerApplication(OPENSTACK_NETWORKING_APP_ID);
+
+        instancePortStore = storageService.<String, InstancePort>consistentMapBuilder()
+                .withSerializer(Serializer.using(SERIALIZER_INSTANCE_PORT))
+                .withName("openstack-instanceport-store")
+                .withApplicationId(appId)
+                .build();
+        instancePortStore.addListener(instancePortMapListener);
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        instancePortStore.removeListener(instancePortMapListener);
+        eventExecutor.shutdown();
+
+        log.info("Stopped");
+    }
+
+    @Override
+    public void createInstancePort(InstancePort port) {
+        instancePortStore.compute(port.portId(), (id, existing) -> {
+            final String error = port.portId() + ERR_DUPLICATE;
+            checkArgument(existing == null, error);
+            return port;
+        });
+    }
+
+    @Override
+    public void updateInstancePort(InstancePort port) {
+        instancePortStore.compute(port.portId(), (id, existing) -> {
+            final String error = port.portId() + ERR_NOT_FOUND;
+            checkArgument(existing != null, error);
+            return port;
+        });
+    }
+
+    @Override
+    public InstancePort removeInstancePort(String portId) {
+        Versioned<InstancePort> port = instancePortStore.remove(portId);
+        return port == null ? null : port.value();
+    }
+
+    @Override
+    public InstancePort instancePort(String portId) {
+        return instancePortStore.asJavaMap().get(portId);
+    }
+
+    @Override
+    public Set<InstancePort> instancePorts() {
+        return ImmutableSet.copyOf(instancePortStore.asJavaMap().values());
+    }
+
+    @Override
+    public void clear() {
+        instancePortStore.clear();
+    }
+
+    private class InstancePortMapListener implements MapEventListener<String, InstancePort> {
+
+        @Override
+        public void event(MapEvent<String, InstancePort> event) {
+            switch (event.type()) {
+                case INSERT:
+                    log.debug("Instance port created");
+                    eventExecutor.execute(() ->
+                            notifyDelegate(new InstancePortEvent(
+                                    OPENSTACK_INSTANCE_PORT_DETECTED,
+                                    event.newValue().value()))
+                    );
+                    break;
+                case UPDATE:
+                    log.debug("Instance port updated");
+                    eventExecutor.execute(() -> {
+                            notifyDelegate(new InstancePortEvent(
+                                    OPENSTACK_INSTANCE_PORT_UPDATED,
+                                    event.newValue().value()));
+                            processInstancePortUpdate(event);
+                    });
+                    break;
+                case REMOVE:
+                    log.debug("Instance port removed");
+                    eventExecutor.execute(() ->
+                            notifyDelegate(new InstancePortEvent(
+                                    OPENSTACK_INSTANCE_PORT_VANISHED,
+                                    event.oldValue().value()))
+                    );
+                    break;
+                default:
+                    log.error("Unsupported instance port event type");
+                    break;
+            }
+        }
+
+        private void processInstancePortUpdate(MapEvent<String, InstancePort> event) {
+            InstancePort.State oldState = event.oldValue().value().state();
+            InstancePort.State newState = event.newValue().value().state();
+
+            if (oldState == ACTIVE && newState == MIGRATING) {
+                notifyDelegate(new InstancePortEvent(
+                        OPENSTACK_INSTANCE_MIGRATION_STARTED,
+                        event.newValue().value()));
+            }
+
+            if (oldState == MIGRATING && newState == ACTIVE) {
+                notifyDelegate(new InstancePortEvent(
+                        OPENSTACK_INSTANCE_MIGRATION_ENDED,
+                        event.newValue().value()));
+            }
+
+            if (oldState == ACTIVE && newState == INACTIVE) {
+                notifyDelegate(new InstancePortEvent(
+                        OPENSTACK_INSTANCE_TERMINATED,
+                        event.newValue().value()));
+            }
+
+            if (oldState == INACTIVE && newState == ACTIVE) {
+                notifyDelegate(new InstancePortEvent(
+                        OPENSTACK_INSTANCE_RESTARTED,
+                        event.newValue().value()));
+            }
+        }
+    }
+}