diff --git a/core/api/src/main/java/org/onosproject/net/flow/DefaultTrafficTreatment.java b/core/api/src/main/java/org/onosproject/net/flow/DefaultTrafficTreatment.java
index 06c49ba..2dad08b 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/DefaultTrafficTreatment.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/DefaultTrafficTreatment.java
@@ -28,6 +28,7 @@
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.flow.instructions.Instruction;
 import org.onosproject.net.flow.instructions.Instructions;
+import org.onosproject.net.meter.MeterId;
 
 import java.util.Collections;
 import java.util.List;
@@ -50,6 +51,7 @@
 
     private static final DefaultTrafficTreatment EMPTY
             = new DefaultTrafficTreatment(Collections.emptyList());
+    private final Instructions.MeterInstruction meter;
 
     /**
      * Creates a new traffic treatment from the specified list of instructions.
@@ -63,6 +65,7 @@
         this.hasClear = false;
         this.table = null;
         this.meta = null;
+        this.meter = null;
     }
 
     /**
@@ -77,7 +80,8 @@
                                    List<Instruction> immediate,
                                    Instructions.TableTypeTransition table,
                                    boolean clear,
-                                   Instructions.MetadataInstruction meta) {
+                                   Instructions.MetadataInstruction meta,
+                                   Instructions.MeterInstruction meter) {
         this.immediate = ImmutableList.copyOf(checkNotNull(immediate));
         this.deferred = ImmutableList.copyOf(checkNotNull(deferred));
         this.all = new ImmutableList.Builder<Instruction>()
@@ -87,6 +91,7 @@
         this.table = table;
         this.meta = meta;
         this.hasClear = clear;
+        this.meter = meter;
     }
 
     @Override
@@ -119,6 +124,11 @@
         return meta;
     }
 
+    @Override
+    public Instructions.MeterInstruction metered() {
+        return meter;
+    }
+
     /**
      * Returns a new traffic treatment builder.
      *
@@ -193,12 +203,16 @@
 
         Instructions.MetadataInstruction meta;
 
+        Instructions.MeterInstruction meter;
+
         List<Instruction> deferred = Lists.newLinkedList();
 
         List<Instruction> immediate = Lists.newLinkedList();
 
         List<Instruction> current = immediate;
 
+
+
         // Creates a new builder
         private Builder() {
         }
@@ -233,6 +247,8 @@
                 case METADATA:
                     meta = (Instructions.MetadataInstruction) instruction;
                     break;
+                case METER:
+                    meter = (Instructions.MeterInstruction) instruction;
                 default:
                     throw new IllegalArgumentException("Unknown instruction type: " +
                                                                instruction.type());
@@ -343,6 +359,11 @@
         }
 
         @Override
+        public TrafficTreatment.Builder meter(MeterId meterId) {
+            return add(Instructions.meterTraffic(meterId));
+        }
+
+        @Override
         public Builder popVlan() {
             return add(Instructions.popVlan());
         }
@@ -420,7 +441,7 @@
             //        && table == null && !clear) {
             //    drop();
             //}
-            return new DefaultTrafficTreatment(deferred, immediate, table, clear, meta);
+            return new DefaultTrafficTreatment(deferred, immediate, table, clear, meta, meter);
         }
 
     }
diff --git a/core/api/src/main/java/org/onosproject/net/flow/TrafficTreatment.java b/core/api/src/main/java/org/onosproject/net/flow/TrafficTreatment.java
index d125a9f..042aeaf 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/TrafficTreatment.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/TrafficTreatment.java
@@ -24,6 +24,7 @@
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.flow.instructions.Instruction;
 import org.onosproject.net.flow.instructions.Instructions;
+import org.onosproject.net.meter.MeterId;
 
 import java.util.List;
 
@@ -75,6 +76,13 @@
     Instructions.MetadataInstruction writeMetadata();
 
     /**
+     * Returns the meter instruction if there is one.
+     *
+     * @return a meter instruction that may be null
+     */
+    Instructions.MeterInstruction metered();
+
+    /**
      * Builder of traffic treatment entities.
      */
     interface Builder {
@@ -243,6 +251,13 @@
          */
         Builder group(GroupId groupId);
 
+        /**
+         * Sets a meter to be used by this flow.
+         *
+         * @param meterId a meter id
+         * @return a treatment builder
+         */
+        Builder meter(MeterId meterId);
 
         /**
          * Sets the next table type to transition to.
diff --git a/core/api/src/main/java/org/onosproject/net/flow/instructions/Instruction.java b/core/api/src/main/java/org/onosproject/net/flow/instructions/Instruction.java
index 7496e97..6f2cac6 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/instructions/Instruction.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/instructions/Instruction.java
@@ -40,6 +40,11 @@
         GROUP,
 
         /**
+         * Signifies that traffic should be metered according to a meter.
+         */
+        METER,
+
+        /**
          * Signifies that the traffic should be modified in L0 way.
          */
         L0MODIFICATION,
diff --git a/core/api/src/main/java/org/onosproject/net/flow/instructions/Instructions.java b/core/api/src/main/java/org/onosproject/net/flow/instructions/Instructions.java
index 3cacfa5..cd9ec96 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/instructions/Instructions.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/instructions/Instructions.java
@@ -34,6 +34,7 @@
 import org.onosproject.net.flow.instructions.L3ModificationInstruction.ModTtlInstruction;
 import org.onosproject.net.flow.instructions.L4ModificationInstruction.L4SubType;
 import org.onosproject.net.flow.instructions.L4ModificationInstruction.ModTransportPortInstruction;
+import org.onosproject.net.meter.MeterId;
 
 import java.util.Objects;
 
@@ -81,6 +82,11 @@
         return new GroupInstruction(groupId);
     }
 
+    public static MeterInstruction meterTraffic(final MeterId meterId) {
+        checkNotNull(meterId, "meter id cannot be null");
+        return new MeterInstruction(meterId);
+    }
+
     /**
      * Creates a l0 modification.
      *
@@ -528,6 +534,50 @@
     }
 
     /**
+     * A meter instruction.
+     */
+    public static final class MeterInstruction implements Instruction {
+        private final MeterId meterId;
+
+        private MeterInstruction(MeterId meterId) {
+            this.meterId = meterId;
+        }
+
+        public MeterId meterId() {
+            return meterId;
+        }
+
+        @Override
+        public Type type() {
+            return Type.METER;
+        }
+
+        @Override
+        public String toString() {
+            return toStringHelper(type().toString())
+                    .add("meter ID", meterId.id()).toString();
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(type().ordinal(), meterId);
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj instanceof MeterInstruction) {
+                MeterInstruction that = (MeterInstruction) obj;
+                return Objects.equals(meterId, that.meterId);
+
+            }
+            return false;
+        }
+    }
+
+    /**
      *  Transition instruction.
      */
     public static class TableTypeTransition implements Instruction {
diff --git a/core/api/src/main/java/org/onosproject/net/meter/Band.java b/core/api/src/main/java/org/onosproject/net/meter/Band.java
new file mode 100644
index 0000000..2bfafad
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/Band.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * Represents a band used within a meter.
+ */
+public interface Band {
+
+    /**
+     * Specifies the type of band.
+     */
+    enum Type {
+        /**
+         * Simple rate limiter which drops packets
+         * when the rate is exceeded.
+         */
+        DROP,
+
+        /**
+         * defines a simple DiffServ policer that remark
+         * the drop precedence of the DSCP field in the
+         * IP header of the packets that exceed the band
+         * rate value.
+         */
+        REMARK
+    }
+
+    /**
+     * The rate at which this meter applies.
+     *
+     * @return the long value of the rate
+     */
+    long rate();
+
+    /**
+     * The burst size at which the meter applies.
+     *
+     * @return the long value of the size
+     */
+    long burst();
+
+    /**
+     * Only meaningful in the case of a REMARK band type.
+     * indicates by which amount the drop precedence of
+     * the packet should be increase if the band is exceeded.
+     *
+     * @return a short value
+     */
+    short dropPrecedence();
+
+    /**
+     * Signals the type of band to create.
+     *
+     * @return a band type
+     */
+    Type type();
+
+    /**
+     * Returns the packets seen by this band.
+     *
+     * @return a long value
+     */
+    long packets();
+
+    /**
+     * Return the bytes seen by this band.
+     *
+     * @return a byte counter
+     */
+    long bytes();
+
+    interface Builder {
+
+        /**
+         * Assigns a rate to this band. The units for this rate
+         * are defined in the encapsulating meter.
+         *
+         * @param rate a long value
+         * @return this
+         */
+        Builder withRate(long rate);
+
+        /**
+         * Assigns a burst size to this band. Only meaningful if
+         * the encapsulating meter is of burst type.
+         *
+         * @param burstSize a long value.
+         * @return this
+         */
+        Builder burstSize(long burstSize);
+
+        /**
+         * Assigns the drop precedence for this band. Only meaningful if
+         * the band is of REMARK type.
+         *
+         * @param prec a short value
+         * @return this
+         */
+        Builder dropPrecedence(short prec);
+
+        /**
+         * Assigns the @See Type of this band.
+         *
+         * @param type a band type
+         * @return this
+         */
+        Builder ofType(Type type);
+
+        /**
+         * Builds the band.
+         *
+         * @return a band
+         */
+        Band build();
+
+    }
+
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/BandEntry.java b/core/api/src/main/java/org/onosproject/net/meter/BandEntry.java
new file mode 100644
index 0000000..03145e9
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/BandEntry.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * Represents a stored band.
+ */
+public interface BandEntry extends Band {
+
+    /**
+     * Sets the number of packets seen by this band.
+     *
+     * @param packets a packet count
+     */
+    void setPackets(long packets);
+
+    /**
+     * Sets the number of bytes seen by this band.
+     *
+     * @param bytes a byte counter
+     */
+    void setBytes(long bytes);
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/DefaultBand.java b/core/api/src/main/java/org/onosproject/net/meter/DefaultBand.java
new file mode 100644
index 0000000..a3a4fc2
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/DefaultBand.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * A default implementation for a Band.
+ */
+public final class DefaultBand implements Band, BandEntry {
+
+    private final Type type;
+    private final long rate;
+    private final long burstSize;
+    private final short prec;
+    private long packets;
+    private long bytes;
+
+    public DefaultBand(Type type, long rate,
+                       long burstSize, short prec) {
+        this.type = type;
+        this.rate = rate;
+        this.burstSize = burstSize;
+        this.prec = prec;
+    }
+
+    @Override
+    public long rate() {
+        return rate;
+    }
+
+    @Override
+    public long burst() {
+        return burstSize;
+    }
+
+    @Override
+    public short dropPrecedence() {
+        return prec;
+    }
+
+    @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public long packets() {
+        return packets;
+    }
+
+    @Override
+    public long bytes() {
+        return bytes;
+    }
+
+    @Override
+    public void setPackets(long packets) {
+        this.packets = packets;
+    }
+
+    @Override
+    public void setBytes(long bytes) {
+        this.bytes = bytes;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static final class Builder implements Band.Builder {
+
+        private long rate;
+        private long burstSize;
+        private Short prec;
+        private Type type;
+
+        @Override
+        public Band.Builder withRate(long rate) {
+            this.rate = rate;
+            return this;
+        }
+
+        @Override
+        public Band.Builder burstSize(long burstSize) {
+            this.burstSize = burstSize;
+            return this;
+        }
+
+        @Override
+        public Band.Builder dropPrecedence(short prec) {
+            this.prec = prec;
+            return this;
+        }
+
+        @Override
+        public Band.Builder ofType(Type type) {
+            this.type = type;
+            return this;
+        }
+
+        @Override
+        public DefaultBand build() {
+            checkArgument(prec != null && type == Type.REMARK,
+                          "Only REMARK bands can have a precendence.");
+
+            return new DefaultBand(type, rate, burstSize, prec);
+        }
+
+
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/DefaultMeter.java b/core/api/src/main/java/org/onosproject/net/meter/DefaultMeter.java
new file mode 100644
index 0000000..611a23e
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/DefaultMeter.java
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.DeviceId;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * A default implementation of a meter.
+ */
+public final class DefaultMeter implements Meter, MeterEntry  {
+
+
+    private final MeterId id;
+    private final ApplicationId appId;
+    private final Unit unit;
+    private final boolean burst;
+    private final Collection<Band> bands;
+    private final DeviceId deviceId;
+
+    private MeterState state;
+    private long life;
+    private long refCount;
+    private long packets;
+    private long bytes;
+
+    private DefaultMeter(DeviceId deviceId, MeterId id, ApplicationId appId,
+                        Unit unit, boolean burst,
+                        Collection<Band> bands) {
+        this.deviceId = deviceId;
+        this.id = id;
+        this.appId = appId;
+        this.unit = unit;
+        this.burst = burst;
+        this.bands = bands;
+    }
+
+    @Override
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    @Override
+    public MeterId id() {
+        return id;
+    }
+
+    @Override
+    public ApplicationId appId() {
+        return appId;
+    }
+
+    @Override
+    public Unit unit() {
+        return unit;
+    }
+
+    @Override
+    public boolean isBurst() {
+        return burst;
+    }
+
+    @Override
+    public Collection<Band> bands() {
+        return bands;
+    }
+
+    @Override
+    public MeterState state() {
+        return state;
+    }
+
+    @Override
+    public long life() {
+        return life;
+    }
+
+    @Override
+    public long referenceCount() {
+        return refCount;
+    }
+
+    @Override
+    public long packetsSeen() {
+        return packets;
+    }
+
+    @Override
+    public long bytesSeen() {
+        return bytes;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    @Override
+    public void setState(MeterState state) {
+        this.state = state;
+    }
+
+    @Override
+    public void setLife(long life) {
+        this.life = life;
+    }
+
+    @Override
+    public void setReferenceCount(long count) {
+        this.refCount = count;
+    }
+
+    @Override
+    public void setProcessedPackets(long packets) {
+        this.packets = packets;
+    }
+
+    @Override
+    public void setProcessedBytes(long bytes) {
+        this.bytes = bytes;
+    }
+
+    public static final class Builder implements Meter.Builder {
+
+        private MeterId id;
+        private ApplicationId appId;
+        private Unit unit = Unit.KB_PER_SEC;
+        private boolean burst = false;
+        private Collection<Band> bands;
+        private DeviceId deviceId;
+
+
+        @Override
+        public Meter.Builder forDevice(DeviceId deviceId) {
+            this.deviceId = deviceId;
+            return this;
+        }
+
+        @Override
+        public Meter.Builder withId(long id) {
+            this.id = MeterId.meterId(id);
+            return this;
+        }
+
+        @Override
+        public Meter.Builder fromApp(ApplicationId appId) {
+            this.appId = appId;
+            return this;
+        }
+
+        @Override
+        public Meter.Builder withUnit(Unit unit) {
+            this.unit = unit;
+            return this;
+        }
+
+        @Override
+        public Meter.Builder burst() {
+            this.burst = true;
+            return this;
+        }
+
+        @Override
+        public Meter.Builder withBands(Collection<Band> bands) {
+            this.bands = Collections.unmodifiableCollection(bands);
+            return this;
+        }
+
+        @Override
+        public DefaultMeter build() {
+            checkNotNull(deviceId, "Must specify a device");
+            checkNotNull(bands, "Must have bands.");
+            checkArgument(bands.size() > 0, "Must have at least one band.");
+            checkNotNull(appId, "Must have an application id");
+            checkNotNull(id, "Must specify a meter id");
+            return new DefaultMeter(deviceId, id, appId, unit, burst, bands);
+        }
+
+
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/Meter.java b/core/api/src/main/java/org/onosproject/net/meter/Meter.java
new file mode 100644
index 0000000..5181c92
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/Meter.java
@@ -0,0 +1,179 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.DeviceId;
+
+import java.util.Collection;
+
+/**
+ * Represents a generalized meter to be deployed on a device.
+ */
+public interface Meter {
+
+    enum Unit {
+        /**
+         * Packets per second.
+         */
+        PKTS_PER_SEC,
+
+        /**
+         * Kilo bits per second.
+         */
+        KB_PER_SEC
+    }
+
+    /**
+     * The target device for this meter.
+     *
+     * @return a device id
+     */
+    DeviceId deviceId();
+
+    /**
+     * This meters id.
+     *
+     * @return a meter id
+     */
+    MeterId id();
+
+    /**
+     * The id of the application which created this meter.
+     *
+     * @return an application id
+     */
+    ApplicationId appId();
+
+    /**
+     * The unit used within this meter.
+     *
+     * @return the unit
+     */
+    Unit unit();
+
+    /**
+     * Signals whether this meter applies to bursts only.
+     *
+     * @return a boolean
+     */
+    boolean isBurst();
+
+    /**
+     * The collection of bands to apply on the dataplane.
+     *
+     * @return a collection of bands.
+     */
+    Collection<Band> bands();
+
+    /**
+     * Fetches the state of this meter.
+     *
+     * @return a meter state
+     */
+    MeterState state();
+
+    /**
+     * The lifetime in seconds of this meter.
+     *
+     * @return number of seconds
+     */
+    long life();
+
+    /**
+     * The number of flows pointing to this meter.
+     *
+     * @return a reference count
+     */
+    long referenceCount();
+
+    /**
+     * Number of packets processed by this meter.
+     *
+     * @return a packet count
+     */
+    long packetsSeen();
+
+    /**
+     * Number of bytes processed by this meter.
+     *
+     * @return a byte count
+     */
+    long bytesSeen();
+
+    /**
+     * A meter builder.
+     */
+    interface Builder {
+
+        /**
+         * Assigns the target device for this meter.
+         *
+         * @param deviceId a device id
+         * @return this
+         */
+        Builder forDevice(DeviceId deviceId);
+
+        /**
+         * Assigns the id to this meter.
+         *
+         * @param id a long
+         * @return this
+         */
+        Builder withId(long id);
+
+        /**
+         * Assigns the application that built this meter.
+         *
+         * @param appId an application id
+         * @return this
+         */
+        Builder fromApp(ApplicationId appId);
+
+        /**
+         * Assigns the @See Unit to use for this meter.
+         * Defaults to kb/s
+         *
+         * @param unit a unit
+         * @return this
+         */
+        Builder withUnit(Unit unit);
+
+        /**
+         * Sets this meter as applicable to burst traffic only.
+         * Defaults to false.
+         *
+         * @return this
+         */
+        Builder burst();
+
+        /**
+         * Assigns bands to this meter. There must be at least one band.
+         *
+         * @param bands a collection of bands
+         * @return this
+         */
+        Builder withBands(Collection<Band> bands);
+
+        /**
+         * Builds the meter based on the specified parameters.
+         *
+         * @return a meter
+         */
+        Meter build();
+    }
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterContext.java b/core/api/src/main/java/org/onosproject/net/meter/MeterContext.java
new file mode 100644
index 0000000..005c41c
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterContext.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * A context permitting the application to be notified when the
+ * meter installation has been successful.
+ */
+public interface MeterContext {
+
+    /**
+     * Invoked on successful installation of the meter.
+     *
+     * @param op a meter
+     */
+    default void onSuccess(Meter op) {}
+
+    /**
+     * Invoked when error is encountered while installing a meter.
+     *
+     * @param op a meter
+     * @param reason the reason why it failed
+     */
+    default void onError(Meter op, MeterFailReason reason) {}
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterEntry.java b/core/api/src/main/java/org/onosproject/net/meter/MeterEntry.java
new file mode 100644
index 0000000..178a564
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterEntry.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * Represents a stored meter.
+ */
+public interface MeterEntry extends Meter {
+
+    /**
+     * Updates the state of this meter.
+     *
+     * @param state a meter state
+     */
+    void setState(MeterState state);
+
+    /**
+     * Set the amount of time the meter has existed in seconds.
+     *
+     * @param life number of seconds
+     */
+    void setLife(long life);
+
+    /**
+     * Sets the number of flows which are using this meter.
+     *
+     * @param count a reference count.
+     */
+    void setReferenceCount(long count);
+
+    /**
+     * Updates the number of packets seen by this meter.
+     *
+     * @param packets a packet count.
+     */
+    void setProcessedPackets(long packets);
+
+    /**
+     * Updates the number of bytes seen by the meter.
+     *
+     * @param bytes a byte counter.
+     */
+    void setProcessedBytes(long bytes);
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterEvent.java b/core/api/src/main/java/org/onosproject/net/meter/MeterEvent.java
new file mode 100644
index 0000000..72f0a53
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterEvent.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Entity that represents Meter events.
+ */
+public class MeterEvent extends AbstractEvent<MeterEvent.Type, Meter> {
+
+
+    public enum Type {
+        /**
+         * A meter addition was requested.
+         */
+        METER_ADD_REQ,
+
+        /**
+         * A meter removal was requested.
+         */
+        METER_REM_REQ
+    }
+
+
+    /**
+     * Creates an event of a given type and for the specified meter and the
+     * current time.
+     *
+     * @param type  meter event type
+     * @param meter event subject
+     */
+    public MeterEvent(Type type, Meter meter) {
+        super(type, meter);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified meter and time.
+     *
+     * @param type  meter event type
+     * @param meter event subject
+     * @param time  occurrence time
+     */
+    public MeterEvent(Type type, Meter meter, long time) {
+        super(type, meter, time);
+    }
+
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterFailReason.java b/core/api/src/main/java/org/onosproject/net/meter/MeterFailReason.java
new file mode 100644
index 0000000..8683e2a
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterFailReason.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * Enum used to represent a meter failure condition.
+ */
+public enum MeterFailReason {
+    /**
+     * A meter with the same identifier already exists.
+     * Essentially a duplicate meter exists.
+     */
+    EXISTING_METER,
+
+    /**
+     * The device does not support any more meters.
+     */
+    OUT_OF_METERS,
+
+    /**
+     * The device does not support any more bands for this meter.
+     */
+    OUT_OF_BANDS,
+
+    /**
+     * The meter that was attempted to be modified is unknown.
+     */
+    UNKNOWN,
+
+    /**
+     * The operation for this meter installation timed out.
+     */
+    TIMEOUT,
+
+    /**
+     * Invalid meter definition.
+     */
+    INVALID_METER,
+
+    /**
+     * The target device is unknown.
+     */
+    UNKNOWN_DEVICE,
+
+    /**
+     * Unknown command.
+     */
+    UNKNOWN_COMMAND,
+
+    /**
+     * Unknown flags.
+     */
+    UNKNOWN_FLAGS,
+
+    /**
+     * Bad rate value.
+     */
+    BAD_RATE,
+
+    /**
+     * Bad burst size value.
+     */
+    BAD_BURST,
+
+    /**
+     * Bad band.
+     */
+    BAD_BAND,
+
+    /**
+     * Bad value value.
+     */
+    BAD_BAND_VALUE
+
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterId.java b/core/api/src/main/java/org/onosproject/net/meter/MeterId.java
new file mode 100644
index 0000000..f479ac5
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterId.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * A representation of a meter id.
+ * Uniquely identifies a meter system wide.
+ */
+public final class MeterId {
+
+    static final long MAX = 0xFFFF0000;
+
+    private final long id;
+
+    public static final MeterId SLOWPATH = new MeterId(0xFFFFFFFD);
+    public static final MeterId CONTROLLER = new MeterId(0xFFFFFFFE);
+    public static final MeterId ALL = new MeterId(0xFFFFFFFF);
+
+    private MeterId(long id) {
+        checkArgument(id <= MAX, "id cannot be larger than 0xFFFF0000");
+        this.id = id;
+    }
+
+    /**
+     * The integer representation of the meter id.
+     *
+     * @return a long
+     */
+    public long id() {
+        return id;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        MeterId meterId = (MeterId) o;
+
+        return id == meterId.id;
+
+    }
+
+    @Override
+    public int hashCode() {
+        return Long.hashCode(id);
+    }
+
+    public static MeterId meterId(long id) {
+        return new MeterId(id);
+
+    }
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterListener.java b/core/api/src/main/java/org/onosproject/net/meter/MeterListener.java
new file mode 100644
index 0000000..0a5e203
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterListener.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of receiving Meter related events.
+ */
+public interface MeterListener extends EventListener<MeterEvent> {
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterOperation.java b/core/api/src/main/java/org/onosproject/net/meter/MeterOperation.java
new file mode 100644
index 0000000..50e6fe9
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterOperation.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import com.google.common.base.MoreObjects;
+
+import java.util.Optional;
+
+/**
+ * Representation of an operation on the meter table.
+ */
+public class MeterOperation {
+
+    private final Optional<MeterContext> context;
+
+    /**
+     * Tyoe of meter operation.
+     */
+    public enum Type {
+        ADD,
+        REMOVE,
+        MODIFY
+    }
+
+    private final Meter meter;
+    private final Type type;
+
+
+    public MeterOperation(Meter meter, Type type, MeterContext context) {
+        this.meter = meter;
+        this.type = type;
+        this.context = Optional.ofNullable(context);
+    }
+
+    /**
+     * Returns the type of operation.
+     *
+     * @return type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns the meter.
+     *
+     * @return a meter
+     */
+    public Meter meter() {
+        return meter;
+    }
+
+    /**
+     * Returns a context which allows application to
+     * be notified on the success value of this operation.
+     *
+     * @return a meter context
+     */
+    public Optional<MeterContext> context() {
+        return this.context;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("meter", meter)
+                .add("type", type)
+                .toString();
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterOperations.java b/core/api/src/main/java/org/onosproject/net/meter/MeterOperations.java
new file mode 100644
index 0000000..92b0c3a
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterOperations.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import com.google.common.collect.ImmutableList;
+
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Immutable collection of meter operation to be used between
+ * core and provider layers of group subsystem.
+ *
+ */
+public final class MeterOperations {
+    private final List<MeterOperation> operations;
+
+    /**
+     * Creates a immutable list of meter operation.
+     *
+     * @param operations list of meter operation
+     */
+    public MeterOperations(List<MeterOperation> operations) {
+        this.operations = ImmutableList.copyOf(checkNotNull(operations));
+    }
+
+    /**
+     * Returns immutable list of Meter operation.
+     *
+     * @return list of Meter operation
+     */
+    public List<MeterOperation> operations() {
+        return operations;
+    }
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterProvider.java b/core/api/src/main/java/org/onosproject/net/meter/MeterProvider.java
new file mode 100644
index 0000000..4655e23
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterProvider.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.Provider;
+
+/**
+ * Abstraction of a Meter provider.
+ */
+public interface MeterProvider extends Provider {
+
+    /**
+     * Performs a batch of meter operation on the specified device with the
+     * specified parameters.
+     *
+     * @param deviceId device identifier on which the batch of group
+     * operations to be executed
+     * @param meterOps immutable list of meter operation
+     */
+    void performMeterOperation(DeviceId deviceId,
+                               MeterOperations meterOps);
+
+
+    /**
+     * Performs a meter operation on the specified device with the
+     * specified parameters.
+     *
+     * @param deviceId device identifier on which the batch of group
+     * operations to be executed
+     * @param meterOp a meter operation
+     */
+    void performMeterOperation(DeviceId deviceId,
+                               MeterOperation meterOp);
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterProviderRegistry.java b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderRegistry.java
new file mode 100644
index 0000000..019ca19
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderRegistry.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+
+import org.onosproject.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction for a meter provider registry.
+ */
+public interface MeterProviderRegistry
+        extends ProviderRegistry<MeterProvider, MeterProviderService> {
+}
+
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java
new file mode 100644
index 0000000..85c0c43
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderService;
+
+import java.util.Collection;
+
+/**
+ * Service through which meter providers can inject information
+ * into the core.
+ */
+public interface MeterProviderService extends ProviderService<MeterProvider> {
+
+    /**
+     * Notifies the core that a meter operaton failed for a
+     * specific reason.
+     * @param operation the failed operation
+     * @param reason the failure reason
+     */
+    void meterOperationFailed(MeterOperation operation,
+                              MeterFailReason reason);
+
+    /**
+     * Pushes the collection of meters observed on the data plane as
+     * well as their associated statistics.
+     *
+     * @param deviceId a device id
+     * @param meterEntries a collection of meter entries
+     */
+    void pushMeterMetrics(DeviceId deviceId,
+                          Collection<Meter> meterEntries);
+
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterService.java b/core/api/src/main/java/org/onosproject/net/meter/MeterService.java
new file mode 100644
index 0000000..eaa2a50
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterService.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.event.ListenerService;
+
+/**
+ * Service for add/updating and removing meters. Meters are
+ * are assigned to flow to rate limit them and provide a certain
+ * quality of service.
+ */
+public interface MeterService
+        extends ListenerService<MeterEvent, MeterListener> {
+
+    /**
+     * Adds a meter to the system and performs it installation.
+     *
+     * @param meter a meter.
+     */
+    void addMeter(MeterOperation meter);
+
+    /**
+     * Updates a meter by adding statistic information to the meter.
+     *
+     * @param meter an updated meter
+     */
+    void updateMeter(MeterOperation meter);
+
+    /**
+     * Remove a meter from the system and the dataplane.
+     *
+     * @param meter a meter to remove
+     */
+    void removeMeter(MeterOperation meter);
+
+    /**
+     * Fetch the meter by the meter id.
+     *
+     * @param id a meter id
+     * @return a meter
+     */
+    Meter getMeter(MeterId id);
+
+    /**
+     * Allocate a meter id which must be used to create the meter.
+     *
+     * @return a meter id
+     */
+    MeterId allocateMeterId();
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterState.java b/core/api/src/main/java/org/onosproject/net/meter/MeterState.java
new file mode 100644
index 0000000..3b93609
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterState.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+/**
+ * Represents the state of the meter as seen by the store.
+ */
+public enum MeterState {
+
+    /**
+     * The meter is in the process of being added.
+     */
+    PENDING_ADD,
+
+    /**
+     * THe meter has been added.
+     */
+    ADDED,
+
+    /**
+     * The meter is in the process of being removed.
+     */
+    PENDING_REMOVE,
+
+    /**
+     * The meter has been removed.
+     */
+    REMOVED,
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterStore.java b/core/api/src/main/java/org/onosproject/net/meter/MeterStore.java
new file mode 100644
index 0000000..c5d57d5
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterStore.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.store.Store;
+
+import java.util.Collection;
+import java.util.concurrent.CompletableFuture;
+
+/**
+ * Entity that stores and distributed meter objects.
+ */
+public interface MeterStore extends Store<MeterEvent, MeterStoreDelegate> {
+
+    /**
+     * Adds a meter to the store.
+     *
+     * @param meter a meter
+     * @return a future indicating the result of the store operation
+     */
+    CompletableFuture<MeterStoreResult> storeMeter(Meter meter);
+
+    /**
+     * Deletes a meter from the store.
+     *
+     * @param meter a meter
+     * @return a future indicating the result of the store operation
+     */
+    CompletableFuture<MeterStoreResult> deleteMeter(Meter meter);
+
+    /**
+     * Updates a meter whose meter id is the same as the passed meter.
+     *
+     * @param meter a new meter
+     * @return a future indicating the result of the store operation
+     */
+    CompletableFuture<MeterStoreResult> updateMeter(Meter meter);
+
+    /**
+     * Updates a given meter's state with the provided state.
+     *
+     * @param meter a meter
+     */
+    void updateMeterState(Meter meter);
+
+    /**
+     * Obtains a meter matching the given meter id.
+     *
+     * @param meterId a meter id
+     * @return a meter
+     */
+    Meter getMeter(MeterId meterId);
+
+    /**
+     * Returns all meters stored in the store.
+     *
+     * @return a collection of meters
+     */
+    Collection<Meter> getAllMeters();
+
+    /**
+     * Update the store by deleting the failed meter.
+     * Notifies the delegate that the meter failed to allow it
+     * to nofity the app.
+     *
+     * @param op a failed meter operation
+     * @param reason a failure reason
+     */
+    void failedMeter(MeterOperation op, MeterFailReason reason);
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterStoreDelegate.java b/core/api/src/main/java/org/onosproject/net/meter/MeterStoreDelegate.java
new file mode 100644
index 0000000..9bfeb42
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Meter store delegate abstraction.
+ */
+public interface MeterStoreDelegate extends StoreDelegate<MeterEvent> {
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterStoreResult.java b/core/api/src/main/java/org/onosproject/net/meter/MeterStoreResult.java
new file mode 100644
index 0000000..7a26746
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterStoreResult.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.meter;
+
+import java.util.Optional;
+
+/**
+ * An entity used to indicate whether the store operation passed.
+ */
+public final class MeterStoreResult {
+
+
+    private final Type type;
+    private final Optional<MeterFailReason> reason;
+
+    public enum Type {
+        SUCCESS,
+        FAIL
+    }
+
+    private MeterStoreResult(Type type, MeterFailReason reason) {
+        this.type = type;
+        this.reason = Optional.ofNullable(reason);
+    }
+
+    public Type type() {
+        return type;
+    }
+
+    public Optional<MeterFailReason> reason() {
+        return reason;
+    }
+
+    /**
+     * A successful store opertion.
+     *
+     * @return a meter store result
+     */
+    public static MeterStoreResult success() {
+        return new MeterStoreResult(Type.SUCCESS, null);
+    }
+
+    /**
+     * A failed store operation.
+     *
+     * @param reason a failure reason
+     * @return a meter store result
+     */
+    public static MeterStoreResult fail(MeterFailReason reason) {
+        return new MeterStoreResult(Type.FAIL, reason);
+    }
+
+}
diff --git a/core/api/src/main/java/org/onosproject/net/meter/package-info.java b/core/api/src/main/java/org/onosproject/net/meter/package-info.java
new file mode 100644
index 0000000..258634d
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/meter/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.
+ */
+
+/**
+ * Flow meter model and related services.
+ */
+package org.onosproject.net.meter;
\ No newline at end of file
diff --git a/core/api/src/test/java/org/onosproject/net/intent/IntentTestsMocks.java b/core/api/src/test/java/org/onosproject/net/intent/IntentTestsMocks.java
index 550406f..ac4ecff 100644
--- a/core/api/src/test/java/org/onosproject/net/intent/IntentTestsMocks.java
+++ b/core/api/src/test/java/org/onosproject/net/intent/IntentTestsMocks.java
@@ -124,6 +124,11 @@
         public MetadataInstruction writeMetadata() {
             return null;
         }
+
+        @Override
+        public Instructions.MeterInstruction metered() {
+            return null;
+        }
     }
 
     /**