diff --git a/apps/vpls/src/main/java/org/onosproject/vpls/config/impl/VplsConfigImpl.java b/apps/vpls/src/main/java/org/onosproject/vpls/config/impl/VplsConfigImpl.java
new file mode 100644
index 0000000..658a27d
--- /dev/null
+++ b/apps/vpls/src/main/java/org/onosproject/vpls/config/impl/VplsConfigImpl.java
@@ -0,0 +1,386 @@
+/*
+ * Copyright 2016-present 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.vpls.config.impl;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableSetMultimap;
+import com.google.common.collect.Maps;
+import com.google.common.collect.SetMultimap;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.packet.VlanId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.incubator.net.intf.InterfaceService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.EncapsulationType;
+import org.onosproject.net.config.ConfigFactory;
+import org.onosproject.net.config.NetworkConfigEvent;
+import org.onosproject.net.config.NetworkConfigListener;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.NetworkConfigService;
+import org.onosproject.net.config.basics.SubjectFactories;
+import org.onosproject.vpls.config.VplsAppConfig;
+import org.onosproject.vpls.config.VplsConfig;
+import org.onosproject.vpls.config.VplsConfigService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Implementation of VPLSConfigurationService which reads VPLS configuration
+ * from the network configuration service.
+ */
+@Component(immediate = true)
+@Service
+public class VplsConfigImpl implements VplsConfigService {
+    private static final String VPLS_APP = "org.onosproject.vpls";
+    private static final String VPLS = "vpls";
+    private static final String EMPTY = "";
+    private static final String CONFIG_NULL = "VPLS configuration not defined";
+    private static final String APP_ID_NULL = "VPLS application ID is null";
+    private static final String CONFIG_CHANGED = "VPLS configuration changed: {}";
+    private static final String CHECK_CONFIG =
+            "Checking the interface configuration";
+    private static final String NET_CONF_EVENT =
+            "Received NetworkConfigEvent {}";
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected NetworkConfigRegistry registry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected InterfaceService interfaceService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected NetworkConfigService configService;
+
+    private final Set<String> vplsAffectedByApi = new HashSet<>();
+
+    private VplsAppConfig vplsAppConfig = new VplsAppConfig();
+
+    private SetMultimap<String, String> ifacesOfVpls = HashMultimap.create();
+    private SetMultimap<String, String> oldIfacesOfVpls = HashMultimap.create();
+    private SetMultimap<String, Interface> vplsIfaces = HashMultimap.create();
+
+    private Map<String, EncapsulationType> vplsEncaps = Maps.newHashMap();
+
+    private final InternalNetworkConfigListener configListener =
+            new InternalNetworkConfigListener();
+
+    private ConfigFactory<ApplicationId, VplsAppConfig> vplsConfigFactory =
+            new ConfigFactory<ApplicationId, VplsAppConfig>(
+                    SubjectFactories.APP_SUBJECT_FACTORY, VplsAppConfig.class, VPLS) {
+                @Override
+                public VplsAppConfig createConfig() {
+                    return new VplsAppConfig();
+                }
+            };
+
+    private ApplicationId vplsAppId;
+
+    @Activate
+    protected void active() {
+        configService.addListener(configListener);
+        registry.registerConfigFactory(vplsConfigFactory);
+        loadConfiguration();
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected  void deactive() {
+        registry.unregisterConfigFactory(vplsConfigFactory);
+        configService.removeListener(configListener);
+        log.info("Stopped");
+    }
+
+    @Override
+    public void addVpls(String vplsName, Set<String> ifaces, String encap) {
+        EncapsulationType encapType = EncapsulationType.enumFromString(encap);
+
+        if (ifacesOfVpls.containsKey(vplsName)) {
+            if (ifaces.isEmpty()) {
+                return;
+            }
+            ifaces.forEach(iface -> vplsAppConfig.addIface(vplsName, iface));
+            vplsAppConfig.setEncap(vplsName, encapType);
+        } else {
+            vplsAppConfig.addVpls(new VplsConfig(vplsName, ifaces, encapType));
+        }
+
+        vplsAffectedByApi.add(vplsName);
+        applyConfig(vplsAppConfig);
+    }
+
+    @Override
+    public void removeVpls(String vplsName) {
+        if (ifacesOfVpls.containsKey(vplsName)) {
+            vplsAppConfig.removeVpls(vplsName);
+            vplsAffectedByApi.add(vplsName);
+            applyConfig(vplsAppConfig);
+        }
+    }
+
+    @Override
+    public void addIface(String vplsName, String iface) {
+        if (ifacesOfVpls.containsKey(vplsName)) {
+            vplsAppConfig.addIface(vplsName, iface);
+            vplsAffectedByApi.add(vplsName);
+            applyConfig(vplsAppConfig);
+        }
+    }
+
+    @Override
+    public void setEncap(String vplsName, String encap) {
+        EncapsulationType encapType = EncapsulationType.enumFromString(encap);
+
+        if (ifacesOfVpls.containsKey(vplsName)) {
+            vplsAppConfig.setEncap(vplsName, encapType);
+            vplsAffectedByApi.add(vplsName);
+            applyConfig(vplsAppConfig);
+        }
+    }
+
+    @Override
+    public void removeIface(String iface) {
+        if (ifacesOfVpls.containsValue(iface)) {
+            VplsConfig vpls = vplsAppConfig.vplsFromIface(iface);
+            vplsAppConfig.removeIface(vpls, iface);
+            vplsAffectedByApi.add(vpls.name());
+            applyConfig(vplsAppConfig);
+        }
+    }
+
+    @Override
+    public void cleanVplsConfig() {
+        ifacesOfVpls.entries().forEach(e -> {
+            vplsAppConfig.removeVpls(e.getKey());
+            vplsAffectedByApi.add(e.getKey());
+        });
+        applyConfig(vplsAppConfig);
+    }
+
+    @Override
+    public EncapsulationType encap(String vplsName) {
+        EncapsulationType encap = null;
+        if (vplsEncaps.containsKey(vplsName)) {
+            encap = vplsEncaps.get(vplsName);
+        }
+
+        return encap;
+    }
+
+    @Override
+    public Set<String> vplsAffectedByApi() {
+        Set<String> vplsNames = ImmutableSet.copyOf(vplsAffectedByApi);
+        vplsAffectedByApi.clear();
+        return vplsNames;
+    }
+
+    @Override
+    public Set<Interface> allIfaces() {
+        Set<Interface> allVplsInterfaces = new HashSet<>();
+        interfaceService.getInterfaces().forEach(allVplsInterfaces::add);
+        return allVplsInterfaces;
+    }
+
+    @Override
+    public Set<Interface> ifaces() {
+        Set<Interface> allVplsInterfaces = new HashSet<>();
+        vplsIfaces.values().forEach(allVplsInterfaces::add);
+        return allVplsInterfaces;
+    }
+
+    @Override
+    public Set<Interface> ifaces(String vplsName) {
+        Set<Interface> vplsInterfaces = new HashSet<>();
+        vplsIfaces.get(vplsName).forEach(vplsInterfaces::add);
+        return vplsInterfaces;
+    }
+
+    @Override
+    public Set<String> vplsNames() {
+        return ifacesOfVpls.keySet();
+    }
+
+    @Override
+    public Set<String> vplsNamesOld() {
+        return oldIfacesOfVpls.keySet();
+    }
+
+    @Override
+    public SetMultimap<String, Interface> ifacesByVplsName() {
+        return ImmutableSetMultimap.copyOf(vplsIfaces);
+    }
+
+    @Override
+    public SetMultimap<String, Interface> ifacesByVplsName(VlanId vlan,
+                                                           ConnectPoint connectPoint) {
+        String vplsName =
+                vplsIfaces.entries().stream()
+                        .filter(e -> e.getValue().connectPoint().equals(connectPoint))
+                        .filter(e -> e.getValue().vlan().equals(vlan))
+                        .map(Map.Entry::getKey)
+                        .findFirst()
+                        .orElse(null);
+        SetMultimap<String, Interface> result = HashMultimap.create();
+        if (vplsName != null && vplsIfaces.containsKey(vplsName)) {
+            vplsIfaces.get(vplsName)
+                    .forEach(intf -> result.put(vplsName, intf));
+            return result;
+        }
+        return null;
+    }
+
+    @Override
+    public Map<String, EncapsulationType> encapByVplsName() {
+        return ImmutableMap.copyOf(vplsEncaps);
+    }
+
+    /**
+     * Retrieves the VPLS configuration from network configuration.
+     */
+    private void loadConfiguration() {
+        loadAppId();
+
+        vplsAppConfig = configService.getConfig(vplsAppId, VplsAppConfig.class);
+
+        if (vplsAppConfig == null) {
+            log.warn(CONFIG_NULL);
+            configService.addConfig(vplsAppId, VplsAppConfig.class);
+            return;
+        }
+
+        oldIfacesOfVpls = ifacesOfVpls;
+        ifacesOfVpls = getConfigInterfaces();
+        vplsIfaces = getConfigCPointsFromIfaces();
+        vplsEncaps = getConfigEncap();
+
+        log.debug(CONFIG_CHANGED, ifacesOfVpls);
+    }
+
+    /**
+     * Retrieves the application identifier from core service.
+     */
+    private void loadAppId() {
+        vplsAppId = coreService.getAppId(VPLS_APP);
+        if (vplsAppId == null) {
+            log.warn(APP_ID_NULL);
+        }
+    }
+
+    /**
+     * Applies a given configuration to the VPLS application.
+     */
+    private void applyConfig(VplsAppConfig vplsAppConfig) {
+        loadAppId();
+        configService.applyConfig(vplsAppId, VplsAppConfig.class, vplsAppConfig.node());
+    }
+
+    /**
+     * Retrieves the VPLS names and related encapsulation types from the
+     * configuration.
+     *
+     * @return a map of VPLS names and associated encapsulation types
+     */
+    private Map<String, EncapsulationType> getConfigEncap() {
+        Map<String, EncapsulationType> configEncap = new HashMap<>();
+
+        vplsAppConfig.vplss().forEach(vpls -> {
+            configEncap.put(vpls.name(), vpls.encap());
+        });
+
+        return configEncap;
+    }
+
+    /**
+     * Retrieves the VPLS names and related interfaces names from the configuration.
+     *
+     * @return a map of VPLS names and related interface names
+     */
+    private SetMultimap<String, String> getConfigInterfaces() {
+        SetMultimap<String, String> confIntfByVpls =
+                HashMultimap.create();
+
+        vplsAppConfig.vplss().forEach(vpls -> {
+            if (vpls.ifaces().isEmpty()) {
+                confIntfByVpls.put(vpls.name(), EMPTY);
+            } else {
+                vpls.ifaces().forEach(iface -> confIntfByVpls.put(vpls.name(), iface));
+            }
+        });
+
+        return confIntfByVpls;
+    }
+
+    /**
+     * Retrieves the VPLS names and related interfaces from the configuration.
+     *
+     * @return a map of VPLS names and related interfaces
+     */
+    private SetMultimap<String, Interface> getConfigCPointsFromIfaces() {
+        log.debug(CHECK_CONFIG);
+
+        SetMultimap<String, Interface> confCPointsByIntf =
+                HashMultimap.create();
+
+        ifacesOfVpls.entries().forEach(vpls -> {
+            interfaceService.getInterfaces()
+                    .stream()
+                    .filter(intf -> intf.ipAddressesList().isEmpty())
+                    .filter(intf -> intf.name().equals(vpls.getValue()))
+                    .forEach(intf -> confCPointsByIntf.put(vpls.getKey(), intf));
+        });
+
+        return confCPointsByIntf;
+    }
+
+    /**
+     * Listener for VPLS configuration events.
+     */
+    private class InternalNetworkConfigListener implements NetworkConfigListener {
+        @Override
+        public void event(NetworkConfigEvent event) {
+            if (event.configClass() == VplsConfigService.CONFIG_CLASS) {
+                log.debug(NET_CONF_EVENT, event.configClass());
+                switch (event.type()) {
+                    case CONFIG_ADDED:
+                    case CONFIG_UPDATED:
+                    case CONFIG_REMOVED:
+                        loadConfiguration();
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+    }
+}
\ No newline at end of file