diff --git a/core/common/src/main/java/org/onosproject/utils/Comparators.java b/core/common/src/main/java/org/onosproject/utils/Comparators.java
index f50ef1a..a2a1114 100644
--- a/core/common/src/main/java/org/onosproject/utils/Comparators.java
+++ b/core/common/src/main/java/org/onosproject/utils/Comparators.java
@@ -19,6 +19,10 @@
 import org.onosproject.core.Application;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.incubator.net.virtual.TenantId;
+import org.onosproject.incubator.net.virtual.VirtualDevice;
+import org.onosproject.incubator.net.virtual.VirtualNetwork;
+import org.onosproject.incubator.net.virtual.VirtualPort;
 import org.onosproject.net.key.DeviceKey;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.Element;
@@ -149,4 +153,32 @@
             return region1.id().toString().compareTo(region2.id().toString());
         }
     };
+
+    public static final Comparator<TenantId> TENANT_ID_COMPARATOR = new Comparator<TenantId>() {
+        @Override
+        public int compare(TenantId tenant1, TenantId tenant2) {
+            return tenant1.id().toString().compareTo(tenant2.id().toString());
+        }
+    };
+
+    public static final Comparator<VirtualNetwork> VIRTUAL_NETWORK_COMPARATOR = new Comparator<VirtualNetwork>() {
+        @Override
+        public int compare(VirtualNetwork virtualNetwork1, VirtualNetwork virtualNetwork2) {
+            return virtualNetwork1.tenantId().toString().compareTo(virtualNetwork2.tenantId().toString());
+        }
+    };
+
+    public static final Comparator<VirtualDevice> VIRTUAL_DEVICE_COMPARATOR = new Comparator<VirtualDevice>() {
+        @Override
+        public int compare(VirtualDevice virtualDevice1, VirtualDevice virtualDevice2) {
+            return virtualDevice1.id().toString().compareTo(virtualDevice2.id().toString());
+        }
+    };
+
+    public static final Comparator<VirtualPort> VIRTUAL_PORT_COMPARATOR = new Comparator<VirtualPort>() {
+        @Override
+        public int compare(VirtualPort virtualPort1, VirtualPort virtualPort2) {
+            return virtualPort1.number().toString().compareTo(virtualPort2.number().toString());
+        }
+    };
 }