diff --git a/core/net/src/main/java/org/onosproject/net/meter/impl/MeterManager.java b/core/net/src/main/java/org/onosproject/net/meter/impl/MeterManager.java
new file mode 100644
index 0000000..1173f1d
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/meter/impl/MeterManager.java
@@ -0,0 +1,380 @@
+/*
+ * Copyright 2015-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.net.meter.impl;
+
+import com.google.common.collect.Maps;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Property;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.util.TriConsumer;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.behaviour.MeterQuery;
+import org.onosproject.net.driver.DriverHandler;
+import org.onosproject.net.driver.DriverService;
+import org.onosproject.net.meter.DefaultMeter;
+import org.onosproject.net.meter.Meter;
+import org.onosproject.net.meter.MeterEvent;
+import org.onosproject.net.meter.MeterFailReason;
+import org.onosproject.net.meter.MeterFeatures;
+import org.onosproject.net.meter.MeterFeaturesKey;
+import org.onosproject.net.meter.MeterId;
+import org.onosproject.net.meter.MeterKey;
+import org.onosproject.net.meter.MeterListener;
+import org.onosproject.net.meter.MeterOperation;
+import org.onosproject.net.meter.MeterProvider;
+import org.onosproject.net.meter.MeterProviderRegistry;
+import org.onosproject.net.meter.MeterProviderService;
+import org.onosproject.net.meter.MeterRequest;
+import org.onosproject.net.meter.MeterService;
+import org.onosproject.net.meter.MeterState;
+import org.onosproject.net.meter.MeterStore;
+import org.onosproject.net.meter.MeterStoreDelegate;
+import org.onosproject.net.meter.MeterStoreResult;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.onosproject.store.service.AtomicCounter;
+import org.onosproject.store.service.StorageService;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.stream.Collectors;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static java.util.concurrent.Executors.newFixedThreadPool;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Provides implementation of the meter service APIs.
+ */
+@Component(immediate = true)
+@Service
+public class MeterManager
+        extends AbstractListenerProviderRegistry<MeterEvent, MeterListener, MeterProvider, MeterProviderService>
+        implements MeterService, MeterProviderRegistry {
+
+    private static final String METERCOUNTERIDENTIFIER = "meter-id-counter-%s";
+    private static final String NUM_THREAD = "numThreads";
+    private static final String WORKER_PATTERN = "installer-%d";
+    private static final String GROUP_THREAD_NAME = "onos/meter";
+
+    private static final int DEFAULT_NUM_THREADS = 4;
+    @Property(name = NUM_THREAD,
+            intValue = DEFAULT_NUM_THREADS,
+            label = "Number of worker threads")
+    private int numThreads = DEFAULT_NUM_THREADS;
+
+    private final Logger log = getLogger(getClass());
+    private final MeterStoreDelegate delegate = new InternalMeterStoreDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected MeterStore store;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DriverService driverService;
+
+    private Map<DeviceId, AtomicCounter> meterIdCounters
+            = Maps.newConcurrentMap();
+
+    private TriConsumer<MeterRequest, MeterStoreResult, Throwable> onComplete;
+
+    private ExecutorService executorService;
+
+    @Activate
+    public void activate() {
+        store.setDelegate(delegate);
+        eventDispatcher.addSink(MeterEvent.class, listenerRegistry);
+
+        onComplete = (request, result, error) -> {
+                request.context().ifPresent(c -> {
+                    if (error != null) {
+                        c.onError(request, MeterFailReason.UNKNOWN);
+                    } else {
+                        if (result.reason().isPresent()) {
+                            c.onError(request, result.reason().get());
+                        } else {
+                            c.onSuccess(request);
+                        }
+                    }
+                });
+
+            };
+
+        executorService = newFixedThreadPool(numThreads,
+                groupedThreads(GROUP_THREAD_NAME, WORKER_PATTERN, log));
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        store.unsetDelegate(delegate);
+        eventDispatcher.removeSink(MeterEvent.class);
+        executorService.shutdown();
+        log.info("Stopped");
+    }
+
+    @Override
+    protected MeterProviderService createProviderService(MeterProvider provider) {
+        return new InternalMeterProviderService(provider);
+    }
+
+    @Override
+    public Meter submit(MeterRequest request) {
+
+        MeterId id = allocateMeterId(request.deviceId());
+
+        Meter.Builder mBuilder = DefaultMeter.builder()
+                .forDevice(request.deviceId())
+                .fromApp(request.appId())
+                .withBands(request.bands())
+                .withId(id)
+                .withUnit(request.unit());
+
+        if (request.isBurst()) {
+            mBuilder.burst();
+        }
+        DefaultMeter m = (DefaultMeter) mBuilder.build();
+        m.setState(MeterState.PENDING_ADD);
+        store.storeMeter(m).whenComplete((result, error) ->
+                                                 onComplete.accept(request, result, error));
+        return m;
+    }
+
+    @Override
+    public void withdraw(MeterRequest request, MeterId meterId) {
+        Meter.Builder mBuilder = DefaultMeter.builder()
+                .forDevice(request.deviceId())
+                .fromApp(request.appId())
+                .withBands(request.bands())
+                .withId(meterId)
+                .withUnit(request.unit());
+
+        if (request.isBurst()) {
+            mBuilder.burst();
+        }
+
+        DefaultMeter m = (DefaultMeter) mBuilder.build();
+        m.setState(MeterState.PENDING_REMOVE);
+        store.deleteMeter(m).whenComplete((result, error) ->
+                                                  onComplete.accept(request, result, error));
+    }
+
+    @Override
+    public Meter getMeter(DeviceId deviceId, MeterId id) {
+        MeterKey key = MeterKey.key(deviceId, id);
+        return store.getMeter(key);
+    }
+
+    @Override
+    public Collection<Meter> getMeters(DeviceId deviceId) {
+        return store.getAllMeters().stream().filter(m ->
+                m.deviceId().equals(deviceId)).collect(Collectors.toList());
+    }
+
+    @Override
+    public Collection<Meter> getAllMeters() {
+        return store.getAllMeters();
+    }
+
+    private long queryMeters(DeviceId device) {
+            DriverHandler handler = driverService.createHandler(device);
+            if (handler == null || !handler.hasBehaviour(MeterQuery.class)) {
+                return 0L;
+            }
+            MeterQuery query = handler.behaviour(MeterQuery.class);
+            return query.getMaxMeters();
+    }
+
+    private MeterId allocateMeterId(DeviceId deviceId) {
+        // We first query the store for any previously removed meterId that could
+        // be reused. Receiving a value (not null) already means that meters
+        // are available for the device.
+        MeterId meterid = store.firstReusableMeterId(deviceId);
+        if (meterid != null) {
+            return meterid;
+        }
+        // If there was no reusable MeterId we have to generate a new value
+        // with an upper limit in maxMeters.
+        long maxMeters = store.getMaxMeters(MeterFeaturesKey.key(deviceId));
+        if (maxMeters == 0L) {
+            // MeterFeatures couldn't be retrieved, trying with queryMeters.
+            // queryMeters is implemented in FullMetersAvailable behaviour.
+            maxMeters = queryMeters(deviceId);
+        }
+
+        if (maxMeters == 0L) {
+            throw new IllegalStateException("Meters not supported by device " + deviceId);
+        }
+
+        final long mmeters = maxMeters;
+        long id = meterIdCounters.compute(deviceId, (k, v) -> {
+            if (v == null) {
+                return allocateCounter(k);
+            }
+            if (v.get() >= mmeters) {
+                throw new IllegalStateException("Maximum number of meters " +
+                        meterIdCounters.get(deviceId).get() +
+                        " reached for device " + deviceId);
+            }
+            return v;
+        }).incrementAndGet();
+
+        return MeterId.meterId(id);
+    }
+
+    private AtomicCounter allocateCounter(DeviceId deviceId) {
+        return storageService.getAtomicCounter(String.format(METERCOUNTERIDENTIFIER, deviceId));
+    }
+
+    private class InternalMeterProviderService
+            extends AbstractProviderService<MeterProvider>
+            implements MeterProviderService {
+
+        /**
+         * Creates a provider service on behalf of the specified provider.
+         *
+         * @param provider provider to which this service is being issued
+         */
+        protected InternalMeterProviderService(MeterProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void meterOperationFailed(MeterOperation operation,
+                                         MeterFailReason reason) {
+            store.failedMeter(operation, reason);
+        }
+
+        @Override
+        public void pushMeterMetrics(DeviceId deviceId, Collection<Meter> meterEntries) {
+            Collection<Meter> allMeters = store.getAllMeters(deviceId);
+
+            Map<MeterId, Meter> meterEntriesMap = meterEntries.stream()
+                    .collect(Collectors.toMap(Meter::id, Meter -> Meter));
+
+            // Look for meters defined in onos and missing in the device (restore)
+            allMeters.stream().forEach(m -> {
+                if ((m.state().equals(MeterState.PENDING_ADD) ||
+                        m.state().equals(MeterState.ADDED)) &&
+                        !meterEntriesMap.containsKey(m.id())) {
+                    // The meter is missing in the device. Reinstall!
+                    log.debug("Adding meter missing in device {} {}", deviceId, m);
+                    provider().performMeterOperation(deviceId,
+                            new MeterOperation(m, MeterOperation.Type.ADD));
+                }
+            });
+
+            // Look for meters defined in the device and not in onos (remove)
+            meterEntriesMap.entrySet().stream()
+                    .filter(md -> !allMeters.stream().anyMatch(m -> m.id().equals(md.getKey())))
+                    .forEach(mio -> {
+                        // The meter is missin in onos. Uninstall!
+                        log.debug("Remove meter in device not in onos {} {}", deviceId, mio.getKey());
+                        Meter meter = mio.getValue();
+                        provider().performMeterOperation(deviceId,
+                                new MeterOperation(meter, MeterOperation.Type.REMOVE));
+            });
+
+            meterEntries.stream()
+                    .filter(m -> allMeters.stream()
+                            .anyMatch(sm -> sm.deviceId().equals(deviceId) && sm.id().equals(m.id())))
+                    .forEach(m -> store.updateMeterState(m));
+
+            allMeters.forEach(m -> {
+                if (m.state() == MeterState.PENDING_ADD) {
+                    provider().performMeterOperation(m.deviceId(),
+                                                     new MeterOperation(m,
+                                                                        MeterOperation.Type.MODIFY));
+                } else if (m.state() == MeterState.PENDING_REMOVE) {
+                    store.deleteMeterNow(m);
+                }
+            });
+        }
+
+        @Override
+        public void pushMeterFeatures(DeviceId deviceId, MeterFeatures meterfeatures) {
+            store.storeMeterFeatures(meterfeatures);
+        }
+
+        @Override
+        public void deleteMeterFeatures(DeviceId deviceId) {
+            store.deleteMeterFeatures(deviceId);
+        }
+    }
+
+    private class InternalMeterStoreDelegate implements MeterStoreDelegate {
+
+        @Override
+        public void notify(MeterEvent event) {
+            DeviceId deviceId = event.subject().deviceId();
+            switch (event.type()) {
+                case METER_ADD_REQ:
+                    executorService.execute(new MeterInstaller(deviceId, event.subject(),
+                            MeterOperation.Type.ADD));
+                    break;
+                case METER_REM_REQ:
+                    executorService.execute(new MeterInstaller(deviceId, event.subject(),
+                            MeterOperation.Type.REMOVE));
+                    break;
+                case METER_ADDED:
+                    log.info("Meter added {}", event.subject());
+                    post(new MeterEvent(MeterEvent.Type.METER_ADDED, event.subject()));
+                    break;
+                case METER_REMOVED:
+                    log.info("Meter removed {}", event.subject());
+                    post(new MeterEvent(MeterEvent.Type.METER_REMOVED, event.subject()));
+                    break;
+                default:
+                    log.warn("Unknown meter event {}", event.type());
+            }
+
+        }
+    }
+    /**
+     * Task that passes the meter down to the provider.
+     */
+    private class MeterInstaller implements Runnable {
+        private final DeviceId deviceId;
+        private final Meter meter;
+        private final MeterOperation.Type op;
+
+        public MeterInstaller(DeviceId deviceId, Meter meter, MeterOperation.Type op) {
+            this.deviceId = checkNotNull(deviceId);
+            this.meter = checkNotNull(meter);
+            this.op = checkNotNull(op);
+        }
+
+        @Override
+        public void run() {
+            MeterProvider p = getProvider(this.deviceId);
+            if (p == null) {
+                log.error("Unable to recover {}'s provider", deviceId);
+                return;
+            }
+            p.performMeterOperation(deviceId, new MeterOperation(meter, op));
+        }
+    }
+
+}