diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/impl/CfmMdManager.java b/incubator/net/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/impl/CfmMdManager.java
new file mode 100644
index 0000000..5a125f5
--- /dev/null
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/impl/CfmMdManager.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2017-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.incubator.net.l2monitoring.cfm.impl;
+
+import java.util.Collection;
+import java.util.Optional;
+
+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.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.event.AbstractListenerManager;
+import org.onosproject.incubator.net.l2monitoring.cfm.DefaultMaintenanceDomain;
+import org.onosproject.incubator.net.l2monitoring.cfm.MaintenanceAssociation;
+import org.onosproject.incubator.net.l2monitoring.cfm.MaintenanceDomain;
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MaIdShort;
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MdId;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.CfmConfigException;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.CfmMdService;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.MdEvent;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.MdListener;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.MdStore;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.MdStoreDelegate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Manager of Cfm Md Service - persists Maintenance Domain in distributed store.
+ */
+@Component(immediate = true)
+@Service
+public class CfmMdManager extends AbstractListenerManager<MdEvent, MdListener>
+        implements CfmMdService {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+    private static final String APP_ID = "org.onosproject.app.cfm";
+
+    protected ApplicationId appId;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected MdStore store;
+
+    protected final MdStoreDelegate delegate = new InternalStoreDelegate();
+
+    @Activate
+    public void activate() {
+        appId = coreService.registerApplication(APP_ID);
+
+        eventDispatcher.addSink(MdEvent.class, listenerRegistry);
+        store.setDelegate(delegate);
+
+        log.info("CFM Service Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        eventDispatcher.removeSink(MdEvent.class);
+        store.unsetDelegate(delegate);
+        log.info("CFM Service Stopped");
+    }
+
+    @Override
+    public Collection<MaintenanceDomain> getAllMaintenanceDomain() {
+        log.debug("Retrieving all MDs from distributed store");
+        return store.getAllMaintenanceDomain();
+    }
+
+    @Override
+    public Optional<MaintenanceDomain> getMaintenanceDomain(MdId mdName) {
+        log.debug("Retrieving MD {} from distributed store", mdName);
+        return store.getMaintenanceDomain(mdName);
+    }
+
+    @Override
+    public boolean deleteMaintenanceDomain(MdId mdName) throws CfmConfigException {
+        log.info("Deleting MD {} from distributed store", mdName);
+        return store.deleteMaintenanceDomain(mdName);
+    }
+
+    @Override
+    public Collection<MaintenanceAssociation> getAllMaintenanceAssociation(MdId mdName) {
+        log.debug("Retrieving all MA of MD {} from distributed store", mdName);
+        return store.getMaintenanceDomain(mdName)
+                .orElseThrow(() -> new IllegalArgumentException("Unknown MD " + mdName))
+                .maintenanceAssociationList();
+    }
+
+    @Override
+    public Optional<MaintenanceAssociation> getMaintenanceAssociation(
+                                                MdId mdName, MaIdShort maName) {
+        log.debug("Retrieving MA {} of MD {} from distributed store", maName, mdName);
+        return store.getMaintenanceDomain(mdName)
+                .orElseThrow(() -> new IllegalArgumentException("Unknown MD " + mdName))
+                .maintenanceAssociationList()
+                .stream().filter(ma -> ma.maId().equals(maName))
+                .findFirst();
+    }
+
+    @Override
+    public boolean deleteMaintenanceAssociation(MdId mdName, MaIdShort maName) throws CfmConfigException {
+        log.info("Deleting MA {} of MD {} from distributed store", maName, mdName);
+        MaintenanceDomain.MdBuilder builder = DefaultMaintenanceDomain
+                .builder(store.getMaintenanceDomain(mdName)
+                .orElseThrow(() -> new IllegalArgumentException("Unknown MD: " + mdName)));
+
+        //Check the MA is present
+        if (!builder.checkMaExists(maName)) {
+            return false;
+        }
+
+        builder = builder.deleteFromMaList(maName);
+
+        store.createUpdateMaintenanceDomain(builder.build());
+        return true;
+    }
+
+    @Override
+    public boolean createMaintenanceDomain(MaintenanceDomain newMd) throws CfmConfigException {
+        log.info("Creating/Updating MD {} in distributed store", newMd.mdId());
+        return store.createUpdateMaintenanceDomain(newMd);
+    }
+
+    @Override
+    public boolean createMaintenanceAssociation(MdId mdName, MaintenanceAssociation newMa)
+            throws CfmConfigException {
+        log.info("Updating MD {} in distributed store by adding new MA {}", mdName, newMa.maId());
+        MaintenanceDomain.MdBuilder builder = DefaultMaintenanceDomain
+                .builder(store.getMaintenanceDomain(mdName)
+                .orElseThrow(() -> new IllegalArgumentException("Unknown MD: " + mdName)));
+
+        boolean replaced = false;
+        //Check the MA is present
+        if (builder.checkMaExists(newMa.maId())) {
+            builder = builder.deleteFromMaList(newMa.maId());
+            replaced = true;
+        }
+
+        builder.addToMaList(newMa);
+        store.createUpdateMaintenanceDomain(builder.build());
+        return replaced;
+    }
+
+    private class InternalStoreDelegate implements MdStoreDelegate {
+        @Override
+        public void notify(MdEvent event) {
+            log.debug("New MD event: {}", event.subject());
+            eventDispatcher.post(event);
+        }
+    }
+
+}