diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/MaintenanceAssociation.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/MaintenanceAssociation.java
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+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/MaintenanceAssociation.java
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+/*
+ * 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;
+
+import java.time.Duration;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MaIdShort;
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MepId;
+import org.onosproject.incubator.net.l2monitoring.cfm.service.CfmConfigException;
+import org.onosproject.net.NetworkResource;
+
+/**
+ * A model of the Maintenance Association.
+ *
+ * See IEEE 802.1Q Section 12.14 CFM entities
+ * Direct child of {@link org.onosproject.incubator.net.l2monitoring.cfm.MaintenanceDomain}
+ */
+public interface MaintenanceAssociation extends NetworkResource {
+    /**
+     * Get the ID of the Maintenance Association.
+     * @return The id object
+     */
+    MaIdShort maId();
+
+    /**
+     * Get the CCM interval for the Maintenance Association.
+     * @return An enumerated value
+     */
+    CcmInterval ccmInterval();
+
+    /**
+     * A list of components each of which can be managed in a manner essentially equivalent to an 802.1Q bridge.
+     * @return A collection of Components
+     */
+    Collection<Component> componentList();
+
+    /**
+     * Create a new component collection.
+     * @param componentList A collection of component objects
+     * @return A new Maintenance Association
+     */
+    MaintenanceAssociation withComponentList(Collection<Component> componentList);
+
+    /**
+     * Get the list of the Remote Mep Ids.
+     * @return A list of Remote Mep Ids
+     */
+    Collection<MepId> remoteMepIdList();
+
+    /**
+     * Create a new Maintenance Association from the current with the specified RemoteMepId list.
+     * @param remoteMepIdList A list of RemoteMepIds
+     * @return A new Maintenance Association
+     */
+    MaintenanceAssociation withRemoteMepIdList(Collection<MepId> remoteMepIdList);
+
+    /**
+     * Numeric identifier.
+     * Some systems require to have a placeholder for a numeric identifier in
+     * addition to the MaId
+     * @return A short numeric id that's been assigned to the MA
+     */
+    short maNumericId();
+
+    /**
+     * Enumerated values from IEEE 802.1Q Table 21-16—CCM Interval field encoding.
+     */
+    public enum CcmInterval {
+        INVALID(0),
+        INTERVAL_3MS(3),
+        INVERVAL_10MS(10),
+        INVERVAL_100MS(100),
+        INTERVAL_1S(1000),
+        INTERVAL_10S(10000),
+        INTERVAL_1MIN(60000),
+        INTERVAL_10MIN(600000);
+
+        private final int millis;
+
+        CcmInterval(int millis) {
+            this.millis = millis;
+        }
+
+        public int millis() {
+            return millis;
+        }
+
+        public Duration duration() {
+            return Duration.ofMillis(millis);
+        }
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.cfm.MaintenanceAssociation}.
+     */
+    interface MaBuilder {
+
+        MaBuilder ccmInterval(CcmInterval ccmInterval);
+
+        MaBuilder addToRemoteMepIdList(MepId remoteMep);
+
+        MaBuilder addToComponentList(Component component);
+
+        MaBuilder maNumericId(short maNumericId);
+
+        MaintenanceAssociation build() throws CfmConfigException;
+    }
+}