diff --git a/core/net/src/main/java/org/onosproject/core/impl/CoreManager.java b/core/net/src/main/java/org/onosproject/core/impl/CoreManager.java
index 66fc9f9..733da9c 100644
--- a/core/net/src/main/java/org/onosproject/core/impl/CoreManager.java
+++ b/core/net/src/main/java/org/onosproject/core/impl/CoreManager.java
@@ -15,22 +15,14 @@
  */
 package org.onosproject.core.impl;
 
-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.Modified;
-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.metrics.MetricsService;
 import org.onlab.util.SharedExecutors;
 import org.onlab.util.SharedScheduledExecutors;
 import org.onlab.util.Tools;
+import org.onosproject.app.ApplicationIdStore;
 import org.onosproject.app.ApplicationService;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.core.ApplicationId;
-import org.onosproject.app.ApplicationIdStore;
 import org.onosproject.core.CoreService;
 import org.onosproject.core.IdBlockStore;
 import org.onosproject.core.IdGenerator;
@@ -38,6 +30,12 @@
 import org.onosproject.core.VersionService;
 import org.onosproject.event.EventDeliveryService;
 import org.osgi.service.component.ComponentContext;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Modified;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -52,46 +50,45 @@
 /**
  * Core service implementation.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = CoreService.class)
 public class CoreManager implements CoreService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected VersionService versionService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ApplicationIdStore applicationIdStore;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected IdBlockStore idBlockStore;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ApplicationService appService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ComponentConfigService cfgService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected EventDeliveryService eventDeliveryService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected MetricsService metricsService;
 
     private static final int DEFAULT_POOL_SIZE = 30;
-    @Property(name = "sharedThreadPoolSize", intValue = DEFAULT_POOL_SIZE,
-            label = "Configure shared pool maximum size ")
+    //@Property(name = "sharedThreadPoolSize", intValue = DEFAULT_POOL_SIZE,
+    //        label = "Configure shared pool maximum size ")
     private int sharedThreadPoolSize = DEFAULT_POOL_SIZE;
 
     private static final int DEFAULT_EVENT_TIME = 2000;
-    @Property(name = "maxEventTimeLimit", intValue = DEFAULT_EVENT_TIME,
-            label = "Maximum number of millis an event sink has to process an event")
+    //@Property(name = "maxEventTimeLimit", intValue = DEFAULT_EVENT_TIME,
+    //        label = "Maximum number of millis an event sink has to process an event")
     private int maxEventTimeLimit = DEFAULT_EVENT_TIME;
 
     private static final boolean DEFAULT_PERFORMANCE_CHECK = false;
-    @Property(name = "sharedThreadPerformanceCheck", boolValue = DEFAULT_PERFORMANCE_CHECK,
-            label = "Enable queue performance check on shared pool")
+    //@Property(name = "sharedThreadPerformanceCheck", boolValue = DEFAULT_PERFORMANCE_CHECK,
+    //        label = "Enable queue performance check on shared pool")
     private boolean calculatePoolPerformance = DEFAULT_PERFORMANCE_CHECK;