Initial import of CFM and SOAM api

Change-Id: Icf5cc2d5fb34b75460e80e8cced0d70265bcd33b
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementCreate.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementCreate.java
new file mode 100644
index 0000000..f74ff04
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementCreate.java
@@ -0,0 +1,182 @@
+/*
+ * 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.soam.delay;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.cfm.Mep.Priority;
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MepId;
+import org.onosproject.incubator.net.l2monitoring.soam.DefaultMeasurementCreateBase;
+import org.onosproject.incubator.net.l2monitoring.soam.SoamConfigException;
+
+/**
+ * The default implementation of {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementCreate}.
+ */
+public class DefaultDelayMeasurementCreate extends DefaultMeasurementCreateBase
+                            implements DelayMeasurementCreate {
+
+    protected final DmType dmCfgType;
+    protected final Collection<MeasurementOption> measurementsEnabled;
+    protected final Short binsPerFdInterval;
+    protected final Short binsPerIfdvInterval;
+    protected final Short ifdvSelectionOffset;
+    protected final Short binsPerFdrInterval;
+    protected final Collection<DelayMeasurementThreshold> thresholds;
+
+    protected DefaultDelayMeasurementCreate(DefaultDmCreateBuilder builder) {
+        super(builder);
+        this.dmCfgType = builder.dmCfgType;
+        this.measurementsEnabled = builder.measurementsEnabled;
+        this.binsPerFdInterval = builder.binsPerFdInterval;
+        this.binsPerIfdvInterval = builder.binsPerIfdvInterval;
+        this.ifdvSelectionOffset = builder.ifdvSelectionOffset;
+        this.binsPerFdrInterval = builder.binsPerFdrInterval;
+        this.thresholds = builder.thresholds;
+    }
+
+    @Override
+    public DmType dmCfgType() {
+        return dmCfgType;
+    }
+
+    @Override
+    public Collection<MeasurementOption> measurementsEnabled() {
+        return measurementsEnabled;
+    }
+
+    @Override
+    public Short binsPerFdInterval() {
+        return binsPerFdInterval;
+    }
+
+    @Override
+    public Short binsPerIfdvInterval() {
+        return binsPerIfdvInterval;
+    }
+
+    @Override
+    public Short ifdvSelectionOffset() {
+        return ifdvSelectionOffset;
+    }
+
+    @Override
+    public Short binsPerFdrInterval() {
+        return binsPerFdrInterval;
+    }
+
+    @Override
+    public Collection<DelayMeasurementThreshold> thresholds() {
+        return thresholds;
+    }
+
+    public static DmCreateBuilder builder(DmType dmCfgType,
+            Version version, MepId remoteMepId, Priority priority)
+                    throws SoamConfigException {
+        return new DefaultDmCreateBuilder(dmCfgType, version, remoteMepId, priority);
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementCreate}.
+     */
+    protected static class DefaultDmCreateBuilder extends DefaultMeasCreateBaseBuilder
+                    implements DmCreateBuilder {
+        protected final DmType dmCfgType;
+
+        protected Collection<MeasurementOption> measurementsEnabled;
+        protected Short binsPerFdInterval;
+        protected Short binsPerIfdvInterval;
+        protected Short ifdvSelectionOffset;
+        protected Short binsPerFdrInterval;
+        protected Collection<DelayMeasurementThreshold> thresholds;
+
+        protected DefaultDmCreateBuilder(DmType dmCfgType, Version version,
+                MepId remoteMepId, Priority priority)
+                        throws SoamConfigException {
+            super(version, remoteMepId, priority);
+            this.dmCfgType = dmCfgType;
+            measurementsEnabled = new ArrayList<>();
+            thresholds = new ArrayList<>();
+        }
+
+        @Override
+        public DmCreateBuilder addToMeasurementsEnabled(
+                MeasurementOption measurementEnabled) {
+            this.measurementsEnabled.add(measurementEnabled);
+            return this;
+        }
+
+        @Override
+        public DmCreateBuilder binsPerFdInterval(Short binsPerFdInterval)
+                throws SoamConfigException {
+            if (binsPerFdInterval < 2 || binsPerFdInterval > 100) {
+                throw new SoamConfigException(
+                        "Bins Per Fd Interval must be between 2..100. Rejecting: " +
+                                binsPerFdInterval);
+            }
+            this.binsPerFdInterval = binsPerFdInterval;
+            return this;
+        }
+
+        @Override
+        public DmCreateBuilder binsPerIfdvInterval(Short binsPerIfdvInterval)
+                throws SoamConfigException {
+            if (binsPerIfdvInterval < 2 || binsPerIfdvInterval > 100) {
+                throw new SoamConfigException(
+                        "Bins Per Ifdv Interval must be between 2..100. Rejecting: " +
+                                binsPerIfdvInterval);
+            }
+            this.binsPerIfdvInterval = binsPerIfdvInterval;
+            return this;
+        }
+
+        @Override
+        public DmCreateBuilder ifdvSelectionOffset(Short ifdvSelectionOffset)
+                throws SoamConfigException {
+            if (ifdvSelectionOffset < 2 || ifdvSelectionOffset > 100) {
+                throw new SoamConfigException(
+                        "IFDV Selection Offset must be between 2..100. Rejecting: " +
+                                ifdvSelectionOffset);
+            }
+            this.ifdvSelectionOffset = ifdvSelectionOffset;
+            return this;
+        }
+
+        @Override
+        public DmCreateBuilder binsPerFdrInterval(Short binsPerFdrInterval)
+                throws SoamConfigException {
+            if (binsPerFdrInterval < 2 || binsPerFdrInterval > 100) {
+                throw new SoamConfigException(
+                        "Bins Per Fd Interval must be between 2..100. Rejecting: " +
+                                binsPerFdrInterval);
+            }
+            this.binsPerFdrInterval = binsPerFdrInterval;
+            return this;
+        }
+
+        @Override
+        public DmCreateBuilder addToThresholds(
+                DelayMeasurementThreshold threshold) {
+            this.thresholds.add(threshold);
+            return this;
+        }
+
+        @Override
+        public DelayMeasurementCreate build() {
+            return new DefaultDelayMeasurementCreate(this);
+        }
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementEntry.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementEntry.java
new file mode 100644
index 0000000..c53c63b
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementEntry.java
@@ -0,0 +1,211 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.cfm.Mep.Priority;
+import org.onosproject.incubator.net.l2monitoring.cfm.identifier.MepId;
+import org.onosproject.incubator.net.l2monitoring.soam.SoamConfigException;
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+import com.google.common.collect.Lists;
+
+/**
+ * The default implementation of {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementEntry}.
+ */
+public final class DefaultDelayMeasurementEntry
+    extends DefaultDelayMeasurementCreate implements DelayMeasurementEntry {
+
+    private final SoamId dmId;
+    private final SessionStatus sessionStatus;
+    private final Duration frameDelayTwoWay;
+    private final Duration frameDelayForward;
+    private final Duration frameDelayBackward;
+    private final Duration interFrameDelayVariationTwoWay;
+    private final Duration interFrameDelayVariationForward;
+    private final Duration interFrameDelayVariationBackward;
+    private final DelayMeasurementStatCurrent currentResult;
+    private final Collection<DelayMeasurementStatHistory> historicalResults;
+
+    private DefaultDelayMeasurementEntry(DefaultDmEntryBuilder builder) {
+        super(builder);
+        this.dmId = builder.dmId;
+        this.currentResult = builder.currentResult;
+        this.historicalResults = builder.historicalResults;
+
+        this.sessionStatus = builder.sessionStatus;
+        this.frameDelayTwoWay = builder.frameDelayTwoWay;
+        this.frameDelayForward = builder.frameDelayForward;
+        this.frameDelayBackward = builder.frameDelayBackward;
+        this.interFrameDelayVariationTwoWay = builder.interFrameDelayVariationTwoWay;
+        this.interFrameDelayVariationForward = builder.interFrameDelayVariationForward;
+        this.interFrameDelayVariationBackward = builder.interFrameDelayVariationBackward;
+    }
+
+    @Override
+    public SoamId dmId() {
+        return dmId;
+    }
+
+    @Override
+    public SessionStatus sessionStatus() {
+        return sessionStatus;
+    }
+
+    @Override
+    public Duration frameDelayTwoWay() {
+        return frameDelayTwoWay;
+    }
+
+    @Override
+    public Duration frameDelayForward() {
+        return frameDelayForward;
+    }
+
+    @Override
+    public Duration frameDelayBackward() {
+        return frameDelayBackward;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationTwoWay() {
+        return interFrameDelayVariationTwoWay;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationForward() {
+        return interFrameDelayVariationForward;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationBackward() {
+        return interFrameDelayVariationBackward;
+    }
+
+    @Override
+    public DelayMeasurementStatCurrent currentResult() {
+        return currentResult;
+    }
+
+    @Override
+    public Collection<DelayMeasurementStatHistory> historicalResults() {
+        if (historicalResults != null) {
+            return Lists.newArrayList(historicalResults);
+        }
+        return null;
+    }
+
+    public static DmEntryBuilder builder(SoamId dmId, DmType dmCfgType,
+            Version version, MepId remoteMepId, Priority priority)
+                    throws SoamConfigException {
+        return new DefaultDmEntryBuilder(dmId, dmCfgType, version,
+                remoteMepId, priority);
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementEntry}.
+     */
+    private static final class DefaultDmEntryBuilder extends DefaultDmCreateBuilder
+                                        implements DmEntryBuilder {
+        private final SoamId dmId;
+        private SessionStatus sessionStatus;
+        private Duration frameDelayTwoWay;
+        private Duration frameDelayForward;
+        private Duration frameDelayBackward;
+        private Duration interFrameDelayVariationTwoWay;
+        private Duration interFrameDelayVariationForward;
+        private Duration interFrameDelayVariationBackward;
+        private DelayMeasurementStatCurrent currentResult;
+        private Collection<DelayMeasurementStatHistory> historicalResults;
+
+        private DefaultDmEntryBuilder(SoamId dmId, DmType dmCfgType,
+                Version version, MepId remoteMepId, Priority priority)
+                        throws SoamConfigException {
+            super(dmCfgType, version, remoteMepId, priority);
+            if (dmId == null) {
+                throw new SoamConfigException("DmId is null");
+            }
+            this.dmId = dmId;
+            historicalResults = new ArrayList<>();
+        }
+
+        @Override
+        public DmEntryBuilder sessionStatus(SessionStatus sessionStatus) {
+            this.sessionStatus = sessionStatus;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder frameDelayTwoWay(Duration frameDelayTwoWay) {
+            this.frameDelayTwoWay = frameDelayTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder frameDelayForward(Duration frameDelayForward) {
+            this.frameDelayForward = frameDelayForward;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder frameDelayBackward(Duration frameDelayBackward) {
+            this.frameDelayBackward = frameDelayBackward;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder interFrameDelayVariationTwoWay(
+                Duration interFrameDelayVariationTwoWay) {
+            this.interFrameDelayVariationTwoWay = interFrameDelayVariationTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder interFrameDelayVariationForward(
+                Duration interFrameDelayVariationForward) {
+            this.interFrameDelayVariationForward = interFrameDelayVariationForward;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder interFrameDelayVariationBackward(
+                Duration interFrameDelayVariationBackward) {
+            this.interFrameDelayVariationBackward = interFrameDelayVariationBackward;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder currentResult(DelayMeasurementStatCurrent currentResult) {
+            this.currentResult = currentResult;
+            return this;
+        }
+
+        @Override
+        public DmEntryBuilder addToHistoricalResults(
+                DelayMeasurementStatHistory historicalResult) {
+            this.historicalResults.add(historicalResult);
+            return this;
+        }
+
+        @Override
+        public DelayMeasurementEntry build() {
+            return new DefaultDelayMeasurementEntry(this);
+        }
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStat.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStat.java
new file mode 100644
index 0000000..01f0bc4
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStat.java
@@ -0,0 +1,589 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.Map;
+
+import com.google.common.collect.Maps;
+
+/**
+ * Abstract default implementation of DelayMeasurementStat.
+ * {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStat}.
+ */
+public abstract class DefaultDelayMeasurementStat implements DelayMeasurementStat {
+
+    private final Duration elapsedTime;
+    private final boolean suspectStatus;
+    private final Duration frameDelayTwoWayMin;
+    private final Duration frameDelayTwoWayMax;
+    private final Duration frameDelayTwoWayAvg;
+    private final Duration frameDelayForwardMin;
+    private final Duration frameDelayForwardMax;
+    private final Duration frameDelayForwardAvg;
+    private final Duration frameDelayBackwardMin;
+    private final Duration frameDelayBackwardMax;
+    private final Duration frameDelayBackwardAvg;
+    private final Duration interFrameDelayVariationTwoWayMin;
+    private final Duration interFrameDelayVariationTwoWayMax;
+    private final Duration interFrameDelayVariationTwoWayAvg;
+    private final Duration interFrameDelayVariationForwardMin;
+    private final Duration interFrameDelayVariationForwardMax;
+    private final Duration interFrameDelayVariationForwardAvg;
+    private final Duration interFrameDelayVariationBackwardMin;
+    private final Duration interFrameDelayVariationBackwardMax;
+    private final Duration interFrameDelayVariationBackwardAvg;
+    private final Duration frameDelayRangeTwoWayMax;
+    private final Duration frameDelayRangeTwoWayAvg;
+    private final Duration frameDelayRangeForwardMax;
+    private final Duration frameDelayRangeForwardAvg;
+    private final Duration frameDelayRangeBackwardMax;
+    private final Duration frameDelayRangeBackwardAvg;
+    private final Integer soamPdusSent;
+    private final Integer soamPdusReceived;
+    private final Map<Duration, Integer> frameDelayTwoWayBins;
+    private final Map<Duration, Integer> frameDelayForwardBins;
+    private final Map<Duration, Integer> frameDelayBackwardBins;
+    private final Map<Duration, Integer> interFrameDelayVariationTwoWayBins;
+    private final Map<Duration, Integer> interFrameDelayVariationForwardBins;
+    private final Map<Duration, Integer> interFrameDelayVariationBackwardBins;
+    private final Map<Duration, Integer> frameDelayRangeTwoWayBins;
+    private final Map<Duration, Integer> frameDelayRangeForwardBins;
+    private final Map<Duration, Integer> frameDelayRangeBackwardBins;
+
+    protected DefaultDelayMeasurementStat(DefaultDmStatBuilder builder) {
+        this.elapsedTime = builder.elapsedTime;
+        this.suspectStatus = builder.suspectStatus;
+        this.frameDelayTwoWayMin = builder.frameDelayTwoWayMin;
+        this.frameDelayTwoWayMax = builder.frameDelayTwoWayMax;
+        this.frameDelayTwoWayAvg = builder.frameDelayTwoWayAvg;
+        this.frameDelayForwardMin = builder.frameDelayForwardMin;
+        this.frameDelayForwardMax = builder.frameDelayForwardMax;
+        this.frameDelayForwardAvg = builder.frameDelayForwardAvg;
+        this.frameDelayBackwardMin = builder.frameDelayBackwardMin;
+        this.frameDelayBackwardMax = builder.frameDelayBackwardMax;
+        this.frameDelayBackwardAvg = builder.frameDelayBackwardAvg;
+        this.interFrameDelayVariationTwoWayMin = builder.interFrameDelayVariationTwoWayMin;
+        this.interFrameDelayVariationTwoWayMax = builder.interFrameDelayVariationTwoWayMax;
+        this.interFrameDelayVariationTwoWayAvg = builder.interFrameDelayVariationTwoWayAvg;
+        this.interFrameDelayVariationForwardMin = builder.interFrameDelayVariationForwardMin;
+        this.interFrameDelayVariationForwardMax = builder.interFrameDelayVariationForwardMax;
+        this.interFrameDelayVariationForwardAvg = builder.interFrameDelayVariationForwardAvg;
+        this.interFrameDelayVariationBackwardMin = builder.interFrameDelayVariationBackwardMin;
+        this.interFrameDelayVariationBackwardMax = builder.interFrameDelayVariationBackwardMax;
+        this.interFrameDelayVariationBackwardAvg = builder.interFrameDelayVariationBackwardAvg;
+        this.frameDelayRangeTwoWayMax = builder.frameDelayRangeTwoWayMax;
+        this.frameDelayRangeTwoWayAvg = builder.frameDelayRangeTwoWayAvg;
+        this.frameDelayRangeForwardMax = builder.frameDelayRangeForwardMax;
+        this.frameDelayRangeForwardAvg = builder.frameDelayRangeForwardAvg;
+        this.frameDelayRangeBackwardMax = builder.frameDelayRangeBackwardMax;
+        this.frameDelayRangeBackwardAvg = builder.frameDelayRangeBackwardAvg;
+        this.soamPdusSent = builder.soamPdusSent;
+        this.soamPdusReceived = builder.soamPdusReceived;
+        this.frameDelayTwoWayBins = builder.frameDelayTwoWayBins;
+        this.frameDelayForwardBins = builder.frameDelayForwardBins;
+        this.frameDelayBackwardBins = builder.frameDelayBackwardBins;
+        this.interFrameDelayVariationTwoWayBins = builder.interFrameDelayVariationTwoWayBins;
+        this.interFrameDelayVariationForwardBins = builder.interFrameDelayVariationForwardBins;
+        this.interFrameDelayVariationBackwardBins = builder.interFrameDelayVariationBackwardBins;
+        this.frameDelayRangeTwoWayBins = builder.frameDelayRangeTwoWayBins;
+        this.frameDelayRangeForwardBins = builder.frameDelayRangeForwardBins;
+        this.frameDelayRangeBackwardBins = builder.frameDelayRangeBackwardBins;
+    }
+
+    @Override
+    public Duration elapsedTime() {
+        return elapsedTime;
+    }
+
+    @Override
+    public boolean suspectStatus() {
+        return suspectStatus;
+    }
+
+    @Override
+    public Duration frameDelayTwoWayMin() {
+        return frameDelayTwoWayMin;
+    }
+
+    @Override
+    public Duration frameDelayTwoWayMax() {
+        return frameDelayTwoWayMax;
+    }
+
+    @Override
+    public Duration frameDelayTwoWayAvg() {
+        return frameDelayTwoWayAvg;
+    }
+
+    @Override
+    public Duration frameDelayForwardMin() {
+        return frameDelayForwardMin;
+    }
+
+    @Override
+    public Duration frameDelayForwardMax() {
+        return frameDelayForwardMax;
+    }
+
+    @Override
+    public Duration frameDelayForwardAvg() {
+        return frameDelayForwardAvg;
+    }
+
+    @Override
+    public Duration frameDelayBackwardMin() {
+        return frameDelayBackwardMin;
+    }
+
+    @Override
+    public Duration frameDelayBackwardMax() {
+        return frameDelayBackwardMax;
+    }
+
+    @Override
+    public Duration frameDelayBackwardAvg() {
+        return frameDelayBackwardAvg;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationTwoWayMin() {
+        return interFrameDelayVariationTwoWayMin;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationTwoWayMax() {
+        return interFrameDelayVariationTwoWayMax;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationTwoWayAvg() {
+        return interFrameDelayVariationTwoWayAvg;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationForwardMin() {
+        return interFrameDelayVariationForwardMin;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationForwardMax() {
+        return interFrameDelayVariationForwardMax;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationForwardAvg() {
+        return interFrameDelayVariationForwardAvg;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationBackwardMin() {
+        return interFrameDelayVariationBackwardMin;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationBackwardMax() {
+        return interFrameDelayVariationBackwardMax;
+    }
+
+    @Override
+    public Duration interFrameDelayVariationBackwardAvg() {
+        return interFrameDelayVariationBackwardAvg;
+    }
+
+    @Override
+    public Duration frameDelayRangeTwoWayMax() {
+        return frameDelayRangeTwoWayMax;
+    }
+
+    @Override
+    public Duration frameDelayRangeTwoWayAvg() {
+        return frameDelayRangeTwoWayAvg;
+    }
+
+    @Override
+    public Duration frameDelayRangeForwardMax() {
+        return frameDelayRangeForwardMax;
+    }
+
+    @Override
+    public Duration frameDelayRangeForwardAvg() {
+        return frameDelayRangeForwardAvg;
+    }
+
+    @Override
+    public Duration frameDelayRangeBackwardMax() {
+        return frameDelayRangeBackwardMax;
+    }
+
+    @Override
+    public Duration frameDelayRangeBackwardAvg() {
+        return frameDelayRangeBackwardAvg;
+    }
+
+    @Override
+    public Integer soamPdusSent() {
+        return soamPdusSent;
+    }
+
+    @Override
+    public Integer soamPdusReceived() {
+        return soamPdusReceived;
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayTwoWayBins() {
+        if (frameDelayTwoWayBins != null) {
+            return Maps.newHashMap(frameDelayTwoWayBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayForwardBins() {
+        if (frameDelayForwardBins != null) {
+            return Maps.newHashMap(frameDelayForwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayBackwardBins() {
+        if (frameDelayBackwardBins != null) {
+            return Maps.newHashMap(frameDelayBackwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> interFrameDelayVariationTwoWayBins() {
+        if (interFrameDelayVariationTwoWayBins != null) {
+            return Maps.newHashMap(interFrameDelayVariationTwoWayBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> interFrameDelayVariationForwardBins() {
+        if (interFrameDelayVariationForwardBins != null) {
+            return Maps.newHashMap(interFrameDelayVariationForwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> interFrameDelayVariationBackwardBins() {
+        if (interFrameDelayVariationBackwardBins != null) {
+            return Maps.newHashMap(interFrameDelayVariationBackwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayRangeTwoWayBins() {
+        if (frameDelayRangeTwoWayBins != null) {
+            return Maps.newHashMap(frameDelayRangeTwoWayBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayRangeForwardBins() {
+        if (frameDelayRangeForwardBins != null) {
+            return Maps.newHashMap(frameDelayRangeForwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Map<Duration, Integer> frameDelayRangeBackwardBins() {
+        if (frameDelayRangeBackwardBins != null) {
+            return Maps.newHashMap(frameDelayRangeBackwardBins);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Abstract builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStat}.
+     */
+    protected abstract static class DefaultDmStatBuilder implements DmStatBuilder {
+
+        private final Duration elapsedTime;
+        private final boolean suspectStatus;
+        private Duration frameDelayTwoWayMin;
+        private Duration frameDelayTwoWayMax;
+        private Duration frameDelayTwoWayAvg;
+        private Duration frameDelayForwardMin;
+        private Duration frameDelayForwardMax;
+        private Duration frameDelayForwardAvg;
+        private Duration frameDelayBackwardMin;
+        private Duration frameDelayBackwardMax;
+        private Duration frameDelayBackwardAvg;
+        private Duration interFrameDelayVariationTwoWayMin;
+        private Duration interFrameDelayVariationTwoWayMax;
+        private Duration interFrameDelayVariationTwoWayAvg;
+        private Duration interFrameDelayVariationForwardMin;
+        private Duration interFrameDelayVariationForwardMax;
+        private Duration interFrameDelayVariationForwardAvg;
+        private Duration interFrameDelayVariationBackwardMin;
+        private Duration interFrameDelayVariationBackwardMax;
+        private Duration interFrameDelayVariationBackwardAvg;
+        private Duration frameDelayRangeTwoWayMax;
+        private Duration frameDelayRangeTwoWayAvg;
+        private Duration frameDelayRangeForwardMax;
+        private Duration frameDelayRangeForwardAvg;
+        private Duration frameDelayRangeBackwardMax;
+        private Duration frameDelayRangeBackwardAvg;
+        private Integer soamPdusSent;
+        private Integer soamPdusReceived;
+        private Map<Duration, Integer> frameDelayTwoWayBins;
+        private Map<Duration, Integer> frameDelayForwardBins;
+        private Map<Duration, Integer> frameDelayBackwardBins;
+        private Map<Duration, Integer> interFrameDelayVariationTwoWayBins;
+        private Map<Duration, Integer> interFrameDelayVariationForwardBins;
+        private Map<Duration, Integer> interFrameDelayVariationBackwardBins;
+        private Map<Duration, Integer> frameDelayRangeTwoWayBins;
+        private Map<Duration, Integer> frameDelayRangeForwardBins;
+        private Map<Duration, Integer> frameDelayRangeBackwardBins;
+
+        protected DefaultDmStatBuilder(Duration elapsedTime, boolean suspectStatus) {
+            this.elapsedTime = elapsedTime;
+            this.suspectStatus = suspectStatus;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayTwoWayMin(Duration frameDelayTwoWayMin) {
+            this.frameDelayTwoWayMin = frameDelayTwoWayMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayTwoWayMax(Duration frameDelayTwoWayMax) {
+            this.frameDelayTwoWayMax = frameDelayTwoWayMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayTwoWayAvg(Duration frameDelayTwoWayAvg) {
+            this.frameDelayTwoWayAvg = frameDelayTwoWayAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayForwardMin(Duration frameDelayForwardMin) {
+            this.frameDelayForwardMin = frameDelayForwardMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayForwardMax(Duration frameDelayForwardMax) {
+            this.frameDelayForwardMax = frameDelayForwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayForwardAvg(Duration frameDelayForwardAvg) {
+            this.frameDelayForwardAvg = frameDelayForwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayBackwardMin(Duration frameDelayBackwardMin) {
+            this.frameDelayBackwardMin = frameDelayBackwardMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayBackwardMax(Duration frameDelayBackwardMax) {
+            this.frameDelayBackwardMax = frameDelayBackwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayBackwardAvg(Duration frameDelayBackwardAvg) {
+            this.frameDelayBackwardAvg = frameDelayBackwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationTwoWayMin(Duration interFrameDelayVariationTwoWayMin) {
+            this.interFrameDelayVariationTwoWayMin = interFrameDelayVariationTwoWayMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationTwoWayMax(Duration interFrameDelayVariationTwoWayMax) {
+            this.interFrameDelayVariationTwoWayMax = interFrameDelayVariationTwoWayMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationTwoWayAvg(Duration interFrameDelayVariationTwoWayAvg) {
+            this.interFrameDelayVariationTwoWayAvg = interFrameDelayVariationTwoWayAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationForwardMin(Duration interFrameDelayVariationForwardMin) {
+            this.interFrameDelayVariationForwardMin = interFrameDelayVariationForwardMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationForwardMax(Duration interFrameDelayVariationForwardMax) {
+            this.interFrameDelayVariationForwardMax = interFrameDelayVariationForwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationForwardAvg(Duration interFrameDelayVariationForwardAvg) {
+            this.interFrameDelayVariationForwardAvg = interFrameDelayVariationForwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationBackwardMin(Duration interFrameDelayVariationBackwardMin) {
+            this.interFrameDelayVariationBackwardMin = interFrameDelayVariationBackwardMin;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationBackwardMax(Duration interFrameDelayVariationBackwardMax) {
+            this.interFrameDelayVariationBackwardMax = interFrameDelayVariationBackwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationBackwardAvg(Duration interFrameDelayVariationBackwardAvg) {
+            this.interFrameDelayVariationBackwardAvg = interFrameDelayVariationBackwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeTwoWayMax(Duration frameDelayRangeTwoWayMax) {
+            this.frameDelayRangeTwoWayMax = frameDelayRangeTwoWayMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeTwoWayAvg(Duration frameDelayRangeTwoWayAvg) {
+            this.frameDelayRangeTwoWayAvg = frameDelayRangeTwoWayAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeForwardMax(Duration frameDelayRangeForwardMax) {
+            this.frameDelayRangeForwardMax = frameDelayRangeForwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeForwardAvg(Duration frameDelayRangeForwardAvg) {
+            this.frameDelayRangeForwardAvg = frameDelayRangeForwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeBackwardMax(Duration frameDelayRangeBackwardMax) {
+            this.frameDelayRangeBackwardMax = frameDelayRangeBackwardMax;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeBackwardAvg(Duration frameDelayRangeBackwardAvg) {
+            this.frameDelayRangeBackwardAvg = frameDelayRangeBackwardAvg;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder soamPdusSent(Integer soamPdusSent) {
+            this.soamPdusSent = soamPdusSent;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder soamPdusReceived(Integer soamPdusReceived) {
+            this.soamPdusReceived = soamPdusReceived;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayTwoWayBins(Map<Duration, Integer> frameDelayTwoWayBins) {
+            this.frameDelayTwoWayBins = frameDelayTwoWayBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayForwardBins(Map<Duration, Integer> frameDelayForwardBins) {
+            this.frameDelayForwardBins = frameDelayForwardBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayBackwardBins(Map<Duration, Integer> frameDelayBackwardBins) {
+            this.frameDelayBackwardBins = frameDelayBackwardBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationTwoWayBins(
+                Map<Duration, Integer> interFrameDelayVariationTwoWayBins) {
+            this.interFrameDelayVariationTwoWayBins = interFrameDelayVariationTwoWayBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationForwardBins(
+                Map<Duration, Integer> interFrameDelayVariationForwardBins) {
+            this.interFrameDelayVariationForwardBins = interFrameDelayVariationForwardBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder interFrameDelayVariationBackwardBins(
+                Map<Duration, Integer> interFrameDelayVariationBackwardBins) {
+            this.interFrameDelayVariationBackwardBins = interFrameDelayVariationBackwardBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeTwoWayBins(Map<Duration, Integer> frameDelayRangeTwoWayBins) {
+            this.frameDelayRangeTwoWayBins = frameDelayRangeTwoWayBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeForwardBins(Map<Duration, Integer> frameDelayRangeForwardBins) {
+            this.frameDelayRangeForwardBins = frameDelayRangeForwardBins;
+            return this;
+        }
+
+        @Override
+        public DmStatBuilder frameDelayRangeBackwardBins(Map<Duration, Integer> frameDelayRangeBackwardBins) {
+            this.frameDelayRangeBackwardBins = frameDelayRangeBackwardBins;
+            return this;
+        }
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatCurrent.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatCurrent.java
new file mode 100644
index 0000000..7263134
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatCurrent.java
@@ -0,0 +1,68 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.time.Instant;
+
+/**
+ * The default implementation of DelayMeasurementStatCurrent.
+ * {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatCurrent}.
+ */
+public final class DefaultDelayMeasurementStatCurrent
+    extends DefaultDelayMeasurementStat
+    implements DelayMeasurementStatCurrent {
+
+    private final Instant startTime;
+
+    protected DefaultDelayMeasurementStatCurrent(DefaultDmStatCurrentBuilder builder) {
+        super(builder);
+        this.startTime = builder.startTime;
+    }
+
+    @Override
+    public Instant startTime() {
+        return startTime;
+    }
+
+    public static DmStatCurrentBuilder builder(Duration elapsedTime, boolean suspectStatus) {
+        return new DefaultDmStatCurrentBuilder(elapsedTime, suspectStatus);
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatCurrent}.
+     */
+    private static final class DefaultDmStatCurrentBuilder extends DefaultDmStatBuilder
+        implements DmStatCurrentBuilder {
+
+        private Instant startTime;
+
+        private DefaultDmStatCurrentBuilder(Duration elapsedTime, boolean suspectStatus) {
+            super(elapsedTime, suspectStatus);
+        }
+
+        @Override
+        public DmStatCurrentBuilder startTime(Instant startTime) {
+            this.startTime = startTime;
+            return this;
+        }
+
+        @Override
+        public DelayMeasurementStat build() {
+            return new DefaultDelayMeasurementStatCurrent(this);
+        }
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatHistory.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatHistory.java
new file mode 100644
index 0000000..4db3683
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementStatHistory.java
@@ -0,0 +1,80 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+/**
+ * The default implementation of DelayMeasurementStatHistory.
+ * {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatHistory}.
+ */
+public class DefaultDelayMeasurementStatHistory extends DefaultDelayMeasurementStat
+        implements DelayMeasurementStatHistory {
+
+    private final SoamId historyStatsId;
+    private final Instant endTime;
+
+    protected DefaultDelayMeasurementStatHistory(DefaultDmStatHistoryBuilder builder) {
+        super(builder);
+        this.historyStatsId = builder.historyStatsId;
+        this.endTime = builder.endTime;
+    }
+
+    @Override
+    public SoamId historyStatsId() {
+        return historyStatsId;
+    }
+
+    @Override
+    public Instant endTime() {
+        return endTime;
+    }
+
+    public static DmStatHistoryBuilder builder(SoamId historyStatsId,
+            Duration elapsedTime, boolean suspectStatus) {
+        return new DefaultDmStatHistoryBuilder(
+                historyStatsId, elapsedTime, suspectStatus);
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatHistory}.
+     */
+    private static final class DefaultDmStatHistoryBuilder
+        extends DefaultDmStatBuilder implements DmStatHistoryBuilder {
+        private final SoamId historyStatsId;
+        private Instant endTime;
+
+        private DefaultDmStatHistoryBuilder(SoamId historyStatsId,
+                Duration elapsedTime, boolean suspectStatus) {
+            super(elapsedTime, suspectStatus);
+            this.historyStatsId = historyStatsId;
+        }
+
+        @Override
+        public DmStatHistoryBuilder endTime(Instant endTime) {
+            this.endTime = endTime;
+            return this;
+        }
+
+        @Override
+        public DelayMeasurementStat build() {
+            return new DefaultDelayMeasurementStatHistory(this);
+        }
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementThreshold.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementThreshold.java
new file mode 100644
index 0000000..90a8c25
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DefaultDelayMeasurementThreshold.java
@@ -0,0 +1,458 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+/**
+ * The default implementation of DelayMeasurementThreshold.
+ * {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementThreshold}.
+ */
+public final class DefaultDelayMeasurementThreshold
+        implements DelayMeasurementThreshold {
+
+    private final SoamId threshId;
+    private final Collection<ThresholdOption> thresholdsEnabled;
+    private final Duration measuredFrameDelayTwoWay;
+    private final Duration maxFrameDelayTwoWay;
+    private final Duration averageFrameDelayTwoWay;
+    private final Duration measuredInterFrameDelayVariationTwoWay;
+    private final Duration maxInterFrameDelayVariationTwoWay;
+    private final Duration averageInterFrameDelayVariationTwoWay;
+    private final Duration maxFrameDelayRangeTwoWay;
+    private final Duration averageFrameDelayRangeTwoWay;
+    private final Duration measuredFrameDelayForward;
+    private final Duration maxFrameDelayForward;
+    private final Duration averageFrameDelayForward;
+    private final Duration measuredInterFrameDelayVariationForward;
+    private final Duration maxInterFrameDelayVariationForward;
+    private final Duration averageInterFrameDelayVariationForward;
+    private final Duration maxFrameDelayRangeForward;
+    private final Duration averageFrameDelayRangeForward;
+    private final Duration measuredFrameDelayBackward;
+    private final Duration maxFrameDelayBackward;
+    private final Duration averageFrameDelayBackward;
+    private final Duration measuredInterFrameDelayVariationBackward;
+    private final Duration maxInterFrameDelayVariationBackward;
+    private final Duration averageInterFrameDelayVariationBackward;
+    private final Duration maxFrameDelayRangeBackward;
+    private final Duration averageFrameDelayRangeBackward;
+
+    private DefaultDelayMeasurementThreshold(DefaultDmThresholdBuilder builder) {
+        this.threshId = builder.threshId;
+        this.thresholdsEnabled = builder.thresholdsEnabled;
+        this.measuredFrameDelayTwoWay = builder.measuredFrameDelayTwoWay;
+        this.maxFrameDelayTwoWay = builder.maxFrameDelayTwoWay;
+        this.averageFrameDelayTwoWay = builder.averageFrameDelayTwoWay;
+        this.measuredInterFrameDelayVariationTwoWay =
+                builder.measuredInterFrameDelayVariationTwoWay;
+        this.maxInterFrameDelayVariationTwoWay =
+                builder.maxInterFrameDelayVariationTwoWay;
+        this.averageInterFrameDelayVariationTwoWay =
+                builder.averageInterFrameDelayVariationTwoWay;
+        this.maxFrameDelayRangeTwoWay = builder.maxFrameDelayRangeTwoWay;
+        this.averageFrameDelayRangeTwoWay = builder.averageFrameDelayRangeTwoWay;
+        this.measuredFrameDelayForward = builder.measuredFrameDelayForward;
+        this.maxFrameDelayForward = builder.maxFrameDelayForward;
+        this.averageFrameDelayForward = builder.averageFrameDelayForward;
+        this.measuredInterFrameDelayVariationForward =
+                builder.measuredInterFrameDelayVariationForward;
+        this.maxInterFrameDelayVariationForward =
+                builder.maxInterFrameDelayVariationForward;
+        this.averageInterFrameDelayVariationForward =
+                builder.averageInterFrameDelayVariationForward;
+        this.maxFrameDelayRangeForward = builder.maxFrameDelayRangeForward;
+        this.averageFrameDelayRangeForward = builder.averageFrameDelayRangeForward;
+        this.measuredFrameDelayBackward = builder.measuredFrameDelayBackward;
+        this.maxFrameDelayBackward = builder.maxFrameDelayBackward;
+        this.averageFrameDelayBackward = builder.averageFrameDelayBackward;
+        this.measuredInterFrameDelayVariationBackward =
+                builder.measuredInterFrameDelayVariationBackward;
+        this.maxInterFrameDelayVariationBackward =
+                builder.maxInterFrameDelayVariationBackward;
+        this.averageInterFrameDelayVariationBackward =
+                builder.averageInterFrameDelayVariationBackward;
+        this.maxFrameDelayRangeBackward =
+                builder.maxFrameDelayRangeBackward;
+        this.averageFrameDelayRangeBackward =
+                builder.averageFrameDelayRangeBackward;
+    }
+
+    @Override
+    public SoamId threshId() {
+        return threshId;
+    }
+
+    @Override
+    public Collection<ThresholdOption> thresholdsEnabled() {
+        return thresholdsEnabled;
+    }
+
+    @Override
+    public Duration measuredFrameDelayTwoWay() {
+        return measuredFrameDelayTwoWay;
+    }
+
+    @Override
+    public Duration maxFrameDelayTwoWay() {
+        return maxFrameDelayTwoWay;
+    }
+
+    @Override
+    public Duration averageFrameDelayTwoWay() {
+        return averageFrameDelayTwoWay;
+    }
+
+    @Override
+    public Duration measuredInterFrameDelayVariationTwoWay() {
+        return measuredInterFrameDelayVariationTwoWay;
+    }
+
+    @Override
+    public Duration maxInterFrameDelayVariationTwoWay() {
+        return maxInterFrameDelayVariationTwoWay;
+    }
+
+    @Override
+    public Duration averageInterFrameDelayVariationTwoWay() {
+        return averageInterFrameDelayVariationTwoWay;
+    }
+
+    @Override
+    public Duration maxFrameDelayRangeTwoWay() {
+        return maxFrameDelayRangeTwoWay;
+    }
+
+    @Override
+    public Duration averageFrameDelayRangeTwoWay() {
+        return averageFrameDelayRangeTwoWay;
+    }
+
+    @Override
+    public Duration measuredFrameDelayForward() {
+        return measuredFrameDelayForward;
+    }
+
+    @Override
+    public Duration maxFrameDelayForward() {
+        return maxFrameDelayForward;
+    }
+
+    @Override
+    public Duration averageFrameDelayForward() {
+        return averageFrameDelayForward;
+    }
+
+    @Override
+    public Duration measuredInterFrameDelayVariationForward() {
+        return measuredInterFrameDelayVariationForward;
+    }
+
+    @Override
+    public Duration maxInterFrameDelayVariationForward() {
+        return maxInterFrameDelayVariationForward;
+    }
+
+    @Override
+    public Duration averageInterFrameDelayVariationForward() {
+        return averageInterFrameDelayVariationForward;
+    }
+
+    @Override
+    public Duration maxFrameDelayRangeForward() {
+        return maxFrameDelayRangeForward;
+    }
+
+    @Override
+    public Duration averageFrameDelayRangeForward() {
+        return averageFrameDelayRangeForward;
+    }
+
+    @Override
+    public Duration measuredFrameDelayBackward() {
+        return measuredFrameDelayBackward;
+    }
+
+    @Override
+    public Duration maxFrameDelayBackward() {
+        return maxFrameDelayBackward;
+    }
+
+    @Override
+    public Duration averageFrameDelayBackward() {
+        return averageFrameDelayBackward;
+    }
+
+    @Override
+    public Duration measuredInterFrameDelayVariationBackward() {
+        return measuredInterFrameDelayVariationBackward;
+    }
+
+    @Override
+    public Duration maxInterFrameDelayVariationBackward() {
+        return maxInterFrameDelayVariationBackward;
+    }
+
+    @Override
+    public Duration averageInterFrameDelayVariationBackward() {
+        return averageInterFrameDelayVariationBackward;
+    }
+
+    @Override
+    public Duration maxFrameDelayRangeBackward() {
+        return maxFrameDelayRangeBackward;
+    }
+
+    @Override
+    public Duration averageFrameDelayRangeBackward() {
+        return averageFrameDelayRangeBackward;
+    }
+
+    public static DmThresholdBuilder builder(SoamId threshId) {
+        return new DefaultDmThresholdBuilder(threshId);
+    }
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementThreshold}.
+     */
+    private static final class DefaultDmThresholdBuilder implements DmThresholdBuilder {
+        private final SoamId threshId;
+        private Collection<ThresholdOption> thresholdsEnabled;
+        private Duration measuredFrameDelayTwoWay;
+        private Duration maxFrameDelayTwoWay;
+        private Duration averageFrameDelayTwoWay;
+        private Duration measuredInterFrameDelayVariationTwoWay;
+        private Duration maxInterFrameDelayVariationTwoWay;
+        private Duration averageInterFrameDelayVariationTwoWay;
+        private Duration maxFrameDelayRangeTwoWay;
+        private Duration averageFrameDelayRangeTwoWay;
+        private Duration measuredFrameDelayForward;
+        private Duration maxFrameDelayForward;
+        private Duration averageFrameDelayForward;
+        private Duration measuredInterFrameDelayVariationForward;
+        private Duration maxInterFrameDelayVariationForward;
+        private Duration averageInterFrameDelayVariationForward;
+        private Duration maxFrameDelayRangeForward;
+        private Duration averageFrameDelayRangeForward;
+        private Duration measuredFrameDelayBackward;
+        private Duration maxFrameDelayBackward;
+        private Duration averageFrameDelayBackward;
+        private Duration measuredInterFrameDelayVariationBackward;
+        private Duration maxInterFrameDelayVariationBackward;
+        private Duration averageInterFrameDelayVariationBackward;
+        private Duration maxFrameDelayRangeBackward;
+        private Duration averageFrameDelayRangeBackward;
+
+        protected DefaultDmThresholdBuilder(SoamId threshId) {
+            this.threshId = threshId;
+            this.thresholdsEnabled = new ArrayList<>();
+        }
+
+        @Override
+        public DmThresholdBuilder addToThresholdsEnabled(
+                ThresholdOption thresholdEnabled) {
+            this.thresholdsEnabled.add(thresholdEnabled);
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredFrameDelayTwoWay(
+                Duration measuredFrameDelayTwoWay) {
+            this.measuredFrameDelayTwoWay = measuredFrameDelayTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayTwoWay(
+                Duration maxFrameDelayTwoWay) {
+            this.maxFrameDelayTwoWay = maxFrameDelayTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayTwoWay(
+                Duration averageFrameDelayTwoWay) {
+            this.averageFrameDelayTwoWay = averageFrameDelayTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredInterFrameDelayVariationTwoWay(
+                Duration measuredInterFrameDelayVariationTwoWay) {
+            this.measuredInterFrameDelayVariationTwoWay =
+                    measuredInterFrameDelayVariationTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxInterFrameDelayVariationTwoWay(
+                Duration maxInterFrameDelayVariationTwoWay) {
+            this.maxInterFrameDelayVariationTwoWay =
+                    maxInterFrameDelayVariationTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageInterFrameDelayVariationTwoWay(
+                Duration averageInterFrameDelayVariationTwoWay) {
+            this.averageInterFrameDelayVariationTwoWay =
+                    averageInterFrameDelayVariationTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayRangeTwoWay(
+                Duration maxFrameDelayRangeTwoWay) {
+            this.maxFrameDelayRangeTwoWay = maxFrameDelayRangeTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayRangeTwoWay(
+                Duration averageFrameDelayRangeTwoWay) {
+            this.averageFrameDelayRangeTwoWay = averageFrameDelayRangeTwoWay;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredFrameDelayForward(
+                Duration measuredFrameDelayForward) {
+            this.measuredFrameDelayForward = measuredFrameDelayForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayForward(
+                Duration maxFrameDelayForward) {
+            this.maxFrameDelayForward = maxFrameDelayForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayForward(
+                Duration averageFrameDelayForward) {
+            this.averageFrameDelayForward = averageFrameDelayForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredInterFrameDelayVariationForward(
+                Duration measuredInterFrameDelayVariationForward) {
+            this.measuredInterFrameDelayVariationForward =
+                    measuredInterFrameDelayVariationForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxInterFrameDelayVariationForward(
+                Duration maxInterFrameDelayVariationForward) {
+            this.maxInterFrameDelayVariationForward =
+                    maxInterFrameDelayVariationForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageInterFrameDelayVariationForward(
+                Duration averageInterFrameDelayVariationForward) {
+            this.averageInterFrameDelayVariationForward =
+                    averageInterFrameDelayVariationForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayRangeForward(
+                Duration maxFrameDelayRangeForward) {
+            this.maxFrameDelayRangeForward = maxFrameDelayRangeForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayRangeForward(
+                Duration averageFrameDelayRangeForward) {
+            this.averageFrameDelayRangeForward = averageFrameDelayRangeForward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredFrameDelayBackward(
+                Duration measuredFrameDelayBackward) {
+            this.measuredFrameDelayBackward = measuredFrameDelayBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayBackward(
+                Duration maxFrameDelayBackward) {
+            this.maxFrameDelayBackward = maxFrameDelayBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayBackward(
+                Duration averageFrameDelayBackward) {
+            this.averageFrameDelayBackward = averageFrameDelayBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder measuredInterFrameDelayVariationBackward(
+                Duration measuredInterFrameDelayVariationBackward) {
+            this.measuredInterFrameDelayVariationBackward =
+                    measuredInterFrameDelayVariationBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxInterFrameDelayVariationBackward(
+                Duration maxInterFrameDelayVariationBackward) {
+            this.maxInterFrameDelayVariationBackward =
+                    maxInterFrameDelayVariationBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageInterFrameDelayVariationBackward(
+                Duration averageInterFrameDelayVariationBackward) {
+            this.averageInterFrameDelayVariationBackward =
+                    averageInterFrameDelayVariationBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder maxFrameDelayRangeBackward(
+                Duration maxFrameDelayRangeBackward) {
+            this.maxFrameDelayRangeBackward = maxFrameDelayRangeBackward;
+            return this;
+        }
+
+        @Override
+        public DmThresholdBuilder averageFrameDelayRangeBackward(
+                Duration averageFrameDelayRangeBackward) {
+            this.averageFrameDelayRangeBackward = averageFrameDelayRangeBackward;
+            return this;
+        }
+
+        @Override
+        public DelayMeasurementThreshold build() {
+            return new DefaultDelayMeasurementThreshold(this);
+        }
+    }
+
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementCreate.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementCreate.java
new file mode 100644
index 0000000..4934146
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementCreate.java
@@ -0,0 +1,226 @@
+/*
+ * 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.soam.delay;
+
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.soam.MeasurementCreateBase;
+import org.onosproject.incubator.net.l2monitoring.soam.SoamConfigException;
+
+/**
+ * A model of Delay Measurement from ITU Y.1731 Chapter 8.2, MEF 17, MEF 36.1 and MEF 39.
+ *
+ * In this model delay measurements entries are returned as a collection in the
+ * MepEntry. In this way Delay Measurements are created by calling on the
+ * Create Delay Measurement function, passing this DelayMeasurementCreate object
+ * and any other arguments needed.
+ * The Delay Measurement Entry is a result and not configured or
+ * persisted in ONOS, but instead is is passed on to some analytics system
+ */
+public interface DelayMeasurementCreate extends MeasurementCreateBase {
+    /**
+     * The type of Delay Measurement is to be performed.
+     * The exact PDUs to use are specified by this object in combination with version
+     * @return enumerated type
+     */
+    DmType dmCfgType();
+
+    /**
+     * A vector of bits that indicates the type of SOAM DM counters that are enabled.
+     * A present bit enables the specific SOAM DM counter.
+     * A not present bit disables the SOAM DM counter.
+     * If a particular SOAM DM counter is not supported the BIT value is not present.
+     * Not all SOAM DM counters are supported for all SOAM DM types.
+     * @return A collection of options
+     */
+    Collection<MeasurementOption> measurementsEnabled();
+
+    /**
+     * The number of measurement bins per Measurement Interval for Frame Delay measurements.
+     * At least 3 bins are to be supported; at least 10 bins are recommended to be supported
+     * @return the number of bins
+     */
+    Short binsPerFdInterval();
+
+    /**
+     * The number of measurement bins per Measurement Interval for Inter-Frame Delay Variation measurements.
+     * The minimum number of measurement bins to be supported is 2. The desired
+     * number of measurements bins to be supported is 10
+     * @return the number of bins
+     */
+    Short binsPerIfdvInterval();
+
+    /**
+     * The selection offset for Inter-Frame Delay Variation measurements.
+     * If this value is set to n, then the IFDV is calculated by taking the
+     * difference in frame delay between frame F and frame (F+n).
+     * reference: MEF-SOAM-PM-MIB.mefSoamDmCfgInterFrameDelayVariationSelectionOffset
+     * @return The selection offset
+     */
+    Short ifdvSelectionOffset();
+
+    /**
+     * The number of measurement bins per Measurement Interval for Frame Delay Range measurements.
+     * @return the number of bins
+     */
+    Short binsPerFdrInterval();
+
+    /**
+     * The Delay Measurement threshold configuration values for DM Performance Monitoring.
+     * The main purpose of the threshold configuration list is to configure
+     * threshold alarm notifications indicating that a specific performance metric
+     * is not being met
+     * @return a collection of Thresholds
+     */
+    Collection<DelayMeasurementThreshold> thresholds();
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementCreate}.
+     */
+    public interface DmCreateBuilder extends MeasCreateBaseBuilder {
+
+        DmCreateBuilder addToMeasurementsEnabled(
+                MeasurementOption measurementEnabled);
+
+        DmCreateBuilder binsPerFdInterval(Short binsPerFdInterval)
+                throws SoamConfigException;
+
+        DmCreateBuilder binsPerIfdvInterval(Short binsPerIfdvInterval)
+                throws SoamConfigException;
+
+        DmCreateBuilder ifdvSelectionOffset(Short ifdvSelectionOffset)
+                throws SoamConfigException;
+
+        DmCreateBuilder binsPerFdrInterval(Short binsPerFdrInterval)
+                throws SoamConfigException;
+
+        DmCreateBuilder addToThresholds(DelayMeasurementThreshold threshold);
+
+        DelayMeasurementCreate build();
+    }
+
+    /**
+     * Enumerated options for Delay Measurement Types.
+     */
+    public enum DmType {
+        /**
+         * DMM SOAM PDU generated, DMR responses received (one-way or two-way measurements).
+         */
+        DMDMM,
+        /**
+         * 1DM SOAM PDU generated (one-way measurements are made by the receiver).
+         */
+        DM1DMTX,
+        /**
+         * 1DM SOAM PDU received and tracked (one-way measurements).
+         */
+        DM1DMRX
+    }
+
+    /**
+     * Supported Versions of Y.1731.
+     */
+    public enum Version {
+        Y17312008("Y.1731-2008"),
+        Y17312011("Y.1731-2011");
+
+        private String literal;
+        private Version(String literal) {
+            this.literal = literal;
+        }
+
+        public String literal() {
+            return literal;
+        }
+    }
+
+    /**
+     * Selection of Measurement types.
+     */
+    public enum MeasurementOption {
+        SOAM_PDUS_SENT,
+        SOAM_PDUS_RECEIVED,
+        FRAME_DELAY_TWO_WAY_BINS,
+        FRAME_DELAY_TWO_WAY_MIN,
+        FRAME_DELAY_TWO_WAY_MAX,
+        FRAME_DELAY_TWO_WAY_AVERAGE,
+        FRAME_DELAY_FORWARD_BINS,
+        FRAME_DELAY_FORWARD_MIN,
+        FRAME_DELAY_FORWARD_MAX,
+        FRAME_DELAY_FORWARD_AVERAGE,
+        FRAME_DELAY_BACKWARD_BINS,
+        FRAME_DELAY_BACKWARD_MIN,
+        FRAME_DELAY_BACKWARD_MAX,
+        FRAME_DELAY_BACKWARD_AVERAGE,
+        INTER_FRAME_DELAY_VARIATION_FORWARD_BINS,
+        INTER_FRAME_DELAY_VARIATION_FORWARD_MIN,
+        INTER_FRAME_DELAY_VARIATION_FORWARD_MAX,
+        INTER_FRAME_DELAY_VARIATION_FORWARD_AVERAGE,
+        INTER_FRAME_DELAY_VARIATION_BACKWARD_BINS,
+        INTER_FRAME_DELAY_VARIATION_BACKWARD_MIN,
+        INTER_FRAME_DELAY_VARIATION_BACKWARD_MAX,
+        INTER_FRAME_DELAY_VARIATION_BACKWARD_AVERAGE,
+        INTER_FRAME_DELAY_VARIATION_TWO_WAY_BINS,
+        INTER_FRAME_DELAY_VARIATION_TWO_WAY_MIN,
+        INTER_FRAME_DELAY_VARIATION_TWO_WAY_MAX,
+        INTER_FRAME_DELAY_VARIATION_TWO_WAY_AVERAGE,
+        FRAME_DELAY_RANGE_FORWARD_BINS,
+        FRAME_DELAY_RANGE_FORWARD_MAX,
+        FRAME_DELAY_RANGE_FORWARD_AVERAGE,
+        FRAME_DELAY_RANGE_BACKWARD_BINS,
+        FRAME_DELAY_RANGE_BACKWARD_MAX,
+        FRAME_DELAY_RANGE_BACKWARD_AVERAGE,
+        FRAME_DELAY_RANGE_TWO_WAY_BINS,
+        FRAME_DELAY_RANGE_TWO_WAY_MAX,
+        FRAME_DELAY_RANGE_TWO_WAY_AVERAGE,
+        MEASURED_STATS_FRAME_DELAY_TWO_WAY,
+        MEASURED_STATS_FRAME_DELAY_FORWARD,
+        MEASURED_STATS_FRAME_DELAY_BACKWARD,
+        MEASURED_STATS_INTER_FRAME_DELAY_VARIATION_TWO_WAY,
+        MEASURED_STATS_INTER_FRAME_DELAY_VARIATION_FORWARD,
+        MEASURED_STATS_INTER_FRAME_DELAY_VARIATION_BACKWARD;
+    }
+
+    /**
+     * Selection of Data Patterns.
+     */
+    public enum DataPattern {
+        ZEROES,
+        ONES;
+    }
+
+    /**
+     * Selection of Test TLV Patterns.
+     */
+    public enum TestTlvPattern {
+        /**
+         * This test pattern is a Null signal without CRC-32.
+         */
+        NULL_SIGNAL_WITHOUT_CRC_32,
+        /**
+         * This test pattern is a Null signal with CRC-32.
+         */
+        NULL_SIGNAL_WITH_CRC_32,
+        /**
+         * This test pattern is a PRBS 2^31-1 without CRC-32.
+         */
+        PRBS_2311_WITHOUT_CRC_32,
+        /**
+         * This test pattern is a PRBS 2^31-1 with CRC-32.
+         */
+        PRBS_2311_WITH_CRC_32;
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementEntry.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementEntry.java
new file mode 100644
index 0000000..3571922
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementEntry.java
@@ -0,0 +1,141 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+/**
+ * Delay Measurement from ITU Y.1731 Chapter 8.2, MEF 17, MEF 36.1 and MEF 39.
+ *
+ * This represents the result returned and includes the parameters used to
+ * configure the DM when it was created
+ */
+public interface DelayMeasurementEntry extends DelayMeasurementCreate {
+    /**
+     * This uniquely identifies a scheduled measurement.
+     * It is automatically generated by the server on creation of a new measurement
+     * @return the id
+     */
+    SoamId dmId();
+
+    /**
+     * The current status of the DM session.
+     * A value of 'active' indicates the current DM session is active,
+     * i.e. the current time lies between the start time and the stop time, and
+     * enabled is true. A value of 'not-active' indicates the current DM session
+     * is not active, i.e. it has not started yet, has stopped upon reaching the
+     * stop time, or is disabled
+     * @return the status
+     */
+    SessionStatus sessionStatus();
+
+    /**
+     * The two-way frame delay calculated by this MEP from the last received SOAM PDU.
+     * This object is undefined is measurement-type is dm1-transmitted or dm1-received
+     * @return The delay as a java duration
+     */
+    Duration frameDelayTwoWay();
+
+    /**
+     * The frame delay in the forward direction calculated by this MEP from the last received SOAM PDU.
+     * The value of this object may not be accurate in the absence of sufficiently
+     * precise clock synchronization.
+     * This object is undefined is measurement-type is dm1-transmitted
+     * @return The delay as a java duration
+     */
+    Duration frameDelayForward();
+
+    /**
+     * The frame delay in the backward direction calculated by this MEP from the last received SOAM PDU.
+     * The value of this object may not be accurate in the absence of sufficiently
+     * precise clock synchronization.
+     * This object is undefined is measurement-type is dm1-transmitted or dm1-received
+     * @return The delay as a java duration
+     */
+    Duration frameDelayBackward();
+
+    /**
+     * The last two-way inter-frame delay interval calculated by this MEP.
+     * The value of this object is undefined when measurement-type is dm1-transmitted or dm1-received
+     * @return The delay as a java duration
+     */
+    Duration interFrameDelayVariationTwoWay();
+
+    /**
+     * The last one-way inter-frame delay interval in the forward direction calculated by this MEP.
+     * The value of this object is undefined when measurement-type is dm1-transmitted
+     * @return The delay as a java duration
+     */
+    Duration interFrameDelayVariationForward();
+
+    /**
+     * The last one-way inter-frame delay interval in the backward direction calculated by this MEP.
+     * The value of this object is undefined when measurement-type is
+     * dm1-transmitted or dm1-received
+     * @return The delay as a java duration
+     */
+    Duration interFrameDelayVariationBackward();
+
+    /**
+     * The results for the current Measurement Interval in a SOAM Delay Measurement session.
+     * gathered during the interval indicated by measurement-interval.
+     * @return The current set of results
+     */
+    DelayMeasurementStatCurrent currentResult();
+
+    /**
+     * The results for history Measurement Intervals in a SOAM Delay Measurement session.
+     * @return A collection of history results
+     */
+    Collection<DelayMeasurementStatHistory> historicalResults();
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementEntry}.
+     */
+    public interface DmEntryBuilder extends DmCreateBuilder {
+        DmEntryBuilder sessionStatus(SessionStatus sessionStatus);
+
+        DmEntryBuilder frameDelayTwoWay(Duration frameDelayTwoWay);
+
+        DmEntryBuilder frameDelayForward(Duration frameDelayForward);
+
+        DmEntryBuilder frameDelayBackward(Duration frameDelayBackward);
+
+        DmEntryBuilder interFrameDelayVariationTwoWay(Duration interFrameDelayVariationTwoWay);
+
+        DmEntryBuilder interFrameDelayVariationForward(Duration interFrameDelayVariationForward);
+
+        DmEntryBuilder interFrameDelayVariationBackward(Duration interFrameDelayVariationBackward);
+
+        DmEntryBuilder currentResult(DelayMeasurementStatCurrent currentResult);
+
+        DmEntryBuilder addToHistoricalResults(
+                DelayMeasurementStatHistory historicalResult);
+
+        DelayMeasurementEntry build();
+    }
+
+    /**
+     * Session Status options.
+     */
+    public enum SessionStatus {
+        ACTIVE,
+        NOT_ACTIVE;
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStat.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStat.java
new file mode 100644
index 0000000..c218c06
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStat.java
@@ -0,0 +1,356 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.Map;
+
+/**
+ * Abstract object as a base for DelayMeasurementStatCurrent and DelayMeasurementStatHistory interfaces.
+ */
+public interface DelayMeasurementStat {
+    /**
+     * The time that the current Measurement Interval has been running.
+     * @return A java duration
+     */
+    Duration elapsedTime();
+
+    /**
+     * The suspect flag for the current measurement interval in which the notification was generated.
+     * reference MEF-SOAM-PM-MIB.mefSoamPmNotificationObjSuspect";
+     * @return true if the measurement might include an error
+     */
+    boolean suspectStatus();
+
+    /**
+     * The minimum two-way frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayTwoWayMin();
+
+    /**
+     * The maximum two-way frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayTwoWayMax();
+
+    /**
+     * The average two-way frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayTwoWayAvg();
+
+    /**
+     * The minimum foward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayForwardMin();
+
+    /**
+     * The maximum forward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayForwardMax();
+
+    /**
+     * The average forward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayForwardAvg();
+
+    /**
+     * The minimum backward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayBackwardMin();
+
+    /**
+     * The maximum backward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayBackwardMax();
+
+    /**
+     * The average backward frame delay calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayBackwardAvg();
+
+    /**
+     * The minimum two-way inter-frame delay interval calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationTwoWayMin();
+
+    /**
+     * The maximum two-way inter-frame delay interval calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationTwoWayMax();
+
+    /**
+     * The average two-way inter-frame delay interval calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationTwoWayAvg();
+
+    /**
+     * The minimum one-way inter-frame delay interval in the forward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationForwardMin();
+
+    /**
+     * The maximum one-way inter-frame delay interval in the forward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationForwardMax();
+
+    /**
+     * The average one-way inter-frame delay interval in the forward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationForwardAvg();
+
+    /**
+     * The minimum one-way inter-frame delay interval in the backward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationBackwardMin();
+
+    /**
+     * The maximum one-way inter-frame delay interval in the backward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationBackwardMax();
+
+    /**
+     * The average one-way inter-frame delay interval in the backward direction.
+     * calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration interFrameDelayVariationBackwardAvg();
+
+    /**
+     * The maximum two-way Frame Delay Range calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayRangeTwoWayMax();
+
+    /**
+     * The average two-way Frame Delay Range calculated by this MEP for this Measurement Interval.
+     * @return A java duration
+     */
+    Duration frameDelayRangeTwoWayAvg();
+
+    /**
+     * The maximum one-way Frame Delay Range in the forward direction.
+     * calculated by this MEP for this Measurement Interval
+     * @return A java duration
+     */
+    Duration frameDelayRangeForwardMax();
+
+    /**
+     * The average one-way Frame Delay Range in the forward direction.
+     * calculated by this MEP for this Measurement Interval
+     * @return A java duration
+     */
+    Duration frameDelayRangeForwardAvg();
+
+    /**
+     * The maximum one-way Frame Delay Range in the backward direction.
+     * calculated by this MEP for this Measurement Interval
+     * @return A java duration
+     */
+    Duration frameDelayRangeBackwardMax();
+
+    /**
+     * The average one-way Frame Delay Range in the backward direction.
+     * calculated by this MEP for this Measurement Interval
+     * @return A java duration
+     */
+    Duration frameDelayRangeBackwardAvg();
+
+    /**
+     * The count of the number of SOAM PDUs sent during this Measurement Interval.
+     * @return the count as an integer
+     */
+    Integer soamPdusSent();
+
+    /**
+     * The count of the number of SOAM PDUs received during this Measurement Interval.
+     * @return the count as an integer
+     */
+    Integer soamPdusReceived();
+
+    /**
+     * Bins calculated for two-way Frame Delay measurements.
+     * calculated by this MEP for this Measurement interval.
+     *
+     * The reply contains a set of counts of packets per bin
+     * The bin is defined by the durations given as the lower limit and the next
+     * size being the upper limit. For the largest duration, the count is of packets
+     * of that size up to infinity
+     *
+     * For example, if there are 4 elements in the result
+     * PT0.000S 4 - This means there are 4 packets in the 0-20ms bin
+     * PT0.020S 6 - This means there are 6 packets in the 20-30ms bin
+     * PT0.030S 8 - This means there are 8 packets in the 30-50ms bin
+     * PT0.050S 10 - This means there are 10 packets in the 50ms-infinity bin
+     *
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayTwoWayBins();
+
+    /**
+     * Bins calculated for one-way Frame Delay measurements in the Forward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayForwardBins();
+
+    /**
+     * Bins calculated for one-way Frame Delay measurements in the Backward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayBackwardBins();
+
+    /**
+     * Bins calculated for two-way Inter Frame Delay Variation measurements.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> interFrameDelayVariationTwoWayBins();
+
+    /**
+     * Bins calculated for one-way Inter Frame Delay Variation measurements in the Forward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> interFrameDelayVariationForwardBins();
+
+    /**
+     * Bins calculated for one-way Inter Frame Delay Variation measurements in the Backward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> interFrameDelayVariationBackwardBins();
+
+    /**
+     * Bins calculated for two-way Frame Delay Range measurements.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayRangeTwoWayBins();
+
+    /**
+     * Bins calculated for one-way Frame Delay Range measurements in the Forward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayRangeForwardBins();
+
+    /**
+     * Bins calculated for one-way Frame Delay Range measurements in the Backward direction.
+     * calculated by this MEP for this Measurement interval.
+     * @return A map of counts per time periods
+     */
+    Map<Duration, Integer> frameDelayRangeBackwardBins();
+
+    /**
+     * Abstract Builder interface for DelayMeasurementStat.
+     * {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStat}.
+     */
+    interface DmStatBuilder {
+        DmStatBuilder frameDelayTwoWayMin(Duration frameDelayTwoWayMin);
+
+        DmStatBuilder frameDelayTwoWayMax(Duration frameDelayTwoWayMax);
+
+        DmStatBuilder frameDelayTwoWayAvg(Duration frameDelayTwoWayAvg);
+
+        DmStatBuilder frameDelayForwardMin(Duration frameDelayForwardMin);
+
+        DmStatBuilder frameDelayForwardMax(Duration frameDelayForwardMax);
+
+        DmStatBuilder frameDelayForwardAvg(Duration frameDelayForwardAvg);
+
+        DmStatBuilder frameDelayBackwardMin(Duration frameDelayBackwardMin);
+
+        DmStatBuilder frameDelayBackwardMax(Duration frameDelayBackwardMax);
+
+        DmStatBuilder frameDelayBackwardAvg(Duration frameDelayBackwardAvg);
+
+        DmStatBuilder interFrameDelayVariationTwoWayMin(Duration interFrameDelayVariationTwoWayMin);
+
+        DmStatBuilder interFrameDelayVariationTwoWayMax(Duration interFrameDelayVariationTwoWayMax);
+
+        DmStatBuilder interFrameDelayVariationTwoWayAvg(Duration interFrameDelayVariationTwoWayAvg);
+
+        DmStatBuilder interFrameDelayVariationForwardMin(Duration interFrameDelayVariationForwardMin);
+
+        DmStatBuilder interFrameDelayVariationForwardMax(Duration interFrameDelayVariationForwardMax);
+
+        DmStatBuilder interFrameDelayVariationForwardAvg(Duration interFrameDelayVariationForwardAvg);
+
+        DmStatBuilder interFrameDelayVariationBackwardMin(Duration interFrameDelayVariationBackwardMin);
+
+        DmStatBuilder interFrameDelayVariationBackwardMax(Duration interFrameDelayVariationBackwardMax);
+
+        DmStatBuilder interFrameDelayVariationBackwardAvg(Duration interFrameDelayVariationBackwardAvg);
+
+        DmStatBuilder frameDelayRangeTwoWayMax(Duration frameDelayRangeTwoWayMax);
+
+        DmStatBuilder frameDelayRangeTwoWayAvg(Duration frameDelayRangeTwoWayAvg);
+
+        DmStatBuilder frameDelayRangeForwardMax(Duration frameDelayRangeForwardMax);
+
+        DmStatBuilder frameDelayRangeForwardAvg(Duration frameDelayRangeForwardAvg);
+
+        DmStatBuilder frameDelayRangeBackwardMax(Duration frameDelayRangeBackwardMax);
+
+        DmStatBuilder frameDelayRangeBackwardAvg(Duration frameDelayRangeBackwardAvg);
+
+        DmStatBuilder soamPdusSent(Integer soamPdusSent);
+
+        DmStatBuilder soamPdusReceived(Integer soamPdusReceived);
+
+        DmStatBuilder frameDelayTwoWayBins(Map<Duration, Integer> frameDelayTwoWayBins);
+
+        DmStatBuilder frameDelayForwardBins(Map<Duration, Integer> frameDelayForwardBins);
+
+        DmStatBuilder frameDelayBackwardBins(Map<Duration, Integer> frameDelayBackwardBins);
+
+        DmStatBuilder interFrameDelayVariationTwoWayBins(Map<Duration, Integer> interFrameDelayVariationTwoWayBins);
+
+        DmStatBuilder interFrameDelayVariationForwardBins(Map<Duration, Integer> interFrameDelayVariationForwardBins);
+
+        DmStatBuilder interFrameDelayVariationBackwardBins(Map<Duration, Integer> interFrameDelayVariationBackwardBins);
+
+        DmStatBuilder frameDelayRangeTwoWayBins(Map<Duration, Integer> frameDelayRangeTwoWayBins);
+
+        DmStatBuilder frameDelayRangeForwardBins(Map<Duration, Integer> frameDelayRangeForwardBins);
+
+        DmStatBuilder frameDelayRangeBackwardBins(Map<Duration, Integer> frameDelayRangeBackwardBins);
+
+        DelayMeasurementStat build();
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatCurrent.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatCurrent.java
new file mode 100644
index 0000000..f9bb25f
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatCurrent.java
@@ -0,0 +1,36 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Instant;
+
+/**
+ * Object for representing Delay Measurement Current Stats.
+ */
+public interface DelayMeasurementStatCurrent extends DelayMeasurementStat {
+    /**
+     * The time that the current Measurement Interval started.
+     * @return The start time as a java Instant
+     */
+    Instant startTime();
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatCurrent}.
+     */
+    public interface DmStatCurrentBuilder extends DmStatBuilder {
+        DmStatCurrentBuilder startTime(Instant startTime);
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatHistory.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatHistory.java
new file mode 100644
index 0000000..c55c66a
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementStatHistory.java
@@ -0,0 +1,44 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Instant;
+
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+/**
+ * Object for representing Delay Measurement History Stats.
+ */
+public interface DelayMeasurementStatHistory extends DelayMeasurementStat {
+    /**
+     * The identifier of the historic measurement.
+     * @return The id
+     */
+    SoamId historyStatsId();
+
+    /**
+     * The time that the historic Measurement Interval ended.
+     * @return A java Instant
+     */
+    Instant endTime();
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementStatHistory}.
+     */
+    public interface DmStatHistoryBuilder extends DmStatBuilder {
+        DmStatHistoryBuilder endTime(Instant endTime);
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementThreshold.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementThreshold.java
new file mode 100644
index 0000000..78ae5d4
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/DelayMeasurementThreshold.java
@@ -0,0 +1,298 @@
+/*
+ * 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.soam.delay;
+
+import java.time.Duration;
+import java.util.Collection;
+
+import org.onosproject.incubator.net.l2monitoring.soam.SoamId;
+
+/**
+ * Object to represent a Delay Measurement Threshold.
+ */
+public interface DelayMeasurementThreshold {
+    /**
+     * The identifier or the scheduled measurement.
+     * @return The id
+     */
+    SoamId threshId();
+
+    /**
+     * A vector of bits that indicates the type of SOAM LM thresholds notifications that are enabled.
+     * A present bit enables the specific SOAM LM threshold notification and
+     * when the specific counter is enabled and the threshold is crossed a
+     * notification is generated.
+     * A not present bit disables the specific SOAM LM threshold notification. If
+     * a particular SOAM LM threshold is not supported the BIT value is not present.
+     * @return A collection of bit options
+     */
+    Collection<ThresholdOption> thresholdsEnabled();
+
+    /**
+     * The measurement two-way delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredFrameDelayTwoWay();
+
+    /**
+     * The maximum two-way delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayTwoWay();
+
+    /**
+     * The average two-way delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayTwoWay();
+
+    /**
+     * The measurement two-way IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredInterFrameDelayVariationTwoWay();
+
+    /**
+     * The maximum two-way IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxInterFrameDelayVariationTwoWay();
+
+    /**
+     * The average two-way IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageInterFrameDelayVariationTwoWay();
+
+    /**
+     * The maximum two-way Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayRangeTwoWay();
+
+    /**
+     * The average two-way Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayRangeTwoWay();
+
+    /**
+     * The measurement forward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredFrameDelayForward();
+
+    /**
+     * The maximum forward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayForward();
+
+    /**
+     * The average forward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayForward();
+
+    /**
+     * The measurement IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredInterFrameDelayVariationForward();
+
+    /**
+     * The maximum IFDV threshold  used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxInterFrameDelayVariationForward();
+
+    /**
+     * The average IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageInterFrameDelayVariationForward();
+
+    /**
+     * The maximum Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayRangeForward();
+
+    /**
+     * The average Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayRangeForward();
+
+    /**
+     * The measurement backward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredFrameDelayBackward();
+
+    /**
+     * The maximum backward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayBackward();
+
+    /**
+     * The average backward delay threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayBackward();
+
+    /**
+     * The measurement backward IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration measuredInterFrameDelayVariationBackward();
+
+    /**
+     * The maximum backward IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxInterFrameDelayVariationBackward();
+
+    /**
+     * The average backward IFDV threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageInterFrameDelayVariationBackward();
+
+    /**
+     * The maximum backward Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration maxFrameDelayRangeBackward();
+
+    /**
+     * The average backward Frame Delay Range threshold used to determine if a threshold notification is generated.
+     * @return A java duration
+     */
+    Duration averageFrameDelayRangeBackward();
+
+    /**
+     * Builder for {@link org.onosproject.incubator.net.l2monitoring.soam.delay.DelayMeasurementThreshold}.
+     */
+    public interface DmThresholdBuilder {
+        DmThresholdBuilder addToThresholdsEnabled(
+                ThresholdOption thresholdEnabled);
+
+        DmThresholdBuilder measuredFrameDelayTwoWay(
+                Duration measuredFrameDelayTwoWay);
+
+        DmThresholdBuilder maxFrameDelayTwoWay(Duration maxFrameDelayTwoWay);
+
+        DmThresholdBuilder averageFrameDelayTwoWay(Duration averageFrameDelayTwoWay);
+
+        DmThresholdBuilder measuredInterFrameDelayVariationTwoWay(
+                Duration measuredInterFrameDelayVariationTwoWay);
+
+        DmThresholdBuilder maxInterFrameDelayVariationTwoWay(
+                Duration maxInterFrameDelayVariationTwoWay);
+
+        DmThresholdBuilder averageInterFrameDelayVariationTwoWay(
+                Duration averageInterFrameDelayVariationTwoWay);
+
+        DmThresholdBuilder maxFrameDelayRangeTwoWay(
+                Duration maxFrameDelayRangeTwoWay);
+
+        DmThresholdBuilder averageFrameDelayRangeTwoWay(
+                Duration averageFrameDelayRangeTwoWay);
+
+        DmThresholdBuilder measuredFrameDelayForward(
+                Duration averageFrameDelayRangeTwoWay);
+
+        DmThresholdBuilder maxFrameDelayForward(
+                Duration maxFrameDelayForward);
+
+        DmThresholdBuilder averageFrameDelayForward(
+                Duration averageFrameDelayForward);
+
+        DmThresholdBuilder measuredInterFrameDelayVariationForward(
+                Duration measuredInterFrameDelayVariationForward);
+
+        DmThresholdBuilder maxInterFrameDelayVariationForward(
+                Duration maxInterFrameDelayVariationForward);
+
+        DmThresholdBuilder averageInterFrameDelayVariationForward(
+                Duration averageInterFrameDelayVariationForward);
+
+        DmThresholdBuilder maxFrameDelayRangeForward(
+                Duration maxFrameDelayRangeForward);
+
+        DmThresholdBuilder averageFrameDelayRangeForward(
+                Duration averageFrameDelayRangeForward);
+
+        DmThresholdBuilder measuredFrameDelayBackward(
+                Duration measuredFrameDelayBackward);
+
+        DmThresholdBuilder maxFrameDelayBackward(
+                Duration maxFrameDelayBackward);
+
+        DmThresholdBuilder averageFrameDelayBackward(
+                Duration averageFrameDelayBackward);
+
+        DmThresholdBuilder measuredInterFrameDelayVariationBackward(
+                Duration measuredInterFrameDelayVariationBackward);
+
+        DmThresholdBuilder maxInterFrameDelayVariationBackward(
+                Duration maxInterFrameDelayVariationBackward);
+
+        DmThresholdBuilder averageInterFrameDelayVariationBackward(
+                Duration averageInterFrameDelayVariationBackward);
+
+        DmThresholdBuilder maxFrameDelayRangeBackward(
+                Duration maxFrameDelayRangeBackward);
+
+        DmThresholdBuilder averageFrameDelayRangeBackward(
+                Duration averageFrameDelayRangeBackward);
+
+        public DelayMeasurementThreshold build();
+
+    }
+
+    /**
+     * Selection of Threshold choices.
+     */
+    public enum ThresholdOption {
+        MEASURED_FRAME_DELAY_TWO_WAY,
+        MAX_FRAME_DELAY_TWO_WAY,
+        AVERAGE_FRAME_DELAY_TWO_WAY,
+        MEASURED_INTER_FRAME_DELAY_VARIATION_TWO_WAY,
+        MAX_INTER_FRAME_DELAY_VARIATION_TWO_WAY,
+        AVERAGE_INTER_FRAME_DELAY_VARIATION_TWO_WAY,
+        MAX_FRAME_DELAY_RANGE_TWO_WAY,
+        AVERAGE_FRAME_DELAY_RANGE_TWO_WAY,
+        MEASURED_FRAME_DELAY_FORWARD,
+        MAX_FRAME_DELAY_FORWARD,
+        AVERAGE_FRAME_DELAY_FORWARD,
+        MEASURED_INTER_FRAME_DELAY_VARIATION_FORWARD,
+        MAX_INTER_FRAME_DELAY_VARIATION_FORWARD,
+        AVERAGE_INTER_FRAME_DELAY_VARIATION_FORWARD,
+        MAX_FRAME_DELAY_RANGE_FORWARD,
+        AVERAGE_FRAME_DELAY_RANGE_FORWARD,
+        MEASURED_FRAME_DELAY_BACKWARD,
+        MAX_FRAME_DELAY_BACKWARD,
+        AVERAGE_FRAME_DELAY_BACKWARD,
+        MEASURED_INTER_FRAME_DELAY_VARIATION_BACKWARD,
+        MAX_INTER_FRAME_DELAY_VARIATION_BACKWARD,
+        AVERAGE_INTER_FRAME_DELAY_VARIATION_BACKWARD,
+        MAX_FRAME_DELAY_RANGE_BACKWARD,
+        AVERAGE_FRAME_DELAY_RANGE_BACKWARD;
+    }
+}
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/package-info.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/package-info.java
new file mode 100644
index 0000000..310eb12
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/soam/delay/package-info.java
@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+/**
+ * Implementation of Service Operation and Maintenance related to Frame delay measurement.
+ *
+ * From ITU Y.1731 (ETH-DM) and MEF 17 Frame Delay Performance and Frame Delay Variation Performance
+ * MEF 36.1 Service OAM SNMP MIB for Performance Monitoring,  MEF 39 Service OAM Performance Monitoring YANG Module
+ */
+package org.onosproject.incubator.net.l2monitoring.soam.delay;
\ No newline at end of file