diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkPathManager.java b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkPathManager.java
index 7d6555a..b3c26ec 100644
--- a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkPathManager.java
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkPathManager.java
@@ -23,7 +23,7 @@
 import org.onosproject.net.Link;
 import org.onosproject.net.Path;
 import org.onosproject.net.host.HostService;
-import org.onosproject.net.topology.LinkWeight;
+import org.onosproject.net.topology.LinkWeigher;
 import org.onosproject.net.topology.PathService;
 import org.onosproject.net.topology.AbstractPathService;
 import org.onosproject.net.topology.TopologyService;
@@ -57,18 +57,18 @@
 
     @Override
     public Set<Path> getPaths(ElementId src, ElementId dst) {
-        return getPaths(src, dst, null);
+        return super.getPaths(src, dst, (LinkWeigher) null);
     }
 
     @Override
     public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst) {
-        return getDisjointPaths(src, dst, (LinkWeight) null);
+        return getDisjointPaths(src, dst, (LinkWeigher) null);
     }
 
     @Override
     public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst,
                                               Map<Link, Object> riskProfile) {
-        return getDisjointPaths(src, dst, null, riskProfile);
+        return getDisjointPaths(src, dst, (LinkWeigher) null, riskProfile);
     }
 
     @Override
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManager.java b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManager.java
index e361a3b..c55829d 100644
--- a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManager.java
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManager.java
@@ -28,6 +28,7 @@
 import org.onosproject.net.Path;
 import org.onosproject.net.topology.ClusterId;
 import org.onosproject.net.topology.DefaultGraphDescription;
+import org.onosproject.net.topology.LinkWeigher;
 import org.onosproject.net.topology.LinkWeight;
 import org.onosproject.net.topology.Topology;
 import org.onosproject.net.topology.TopologyCluster;
@@ -43,6 +44,7 @@
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onosproject.incubator.net.virtual.DefaultVirtualLink.PID;
+import static org.onosproject.net.topology.AdapterLinkWeigher.adapt;
 
 /**
  * Topology service implementation built on the virtual network service.
@@ -136,15 +138,23 @@
     }
 
     @Override
-    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst, LinkWeight weight) {
-        checkNotNull(src, DEVICE_ID_NULL);
-        checkNotNull(dst, DEVICE_ID_NULL);
-        checkNotNull(weight, LINK_WEIGHT_NULL);
-        return defaultTopology(topology).getPaths(src, dst, weight);
+    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst,
+                              LinkWeight weight) {
+        return getPaths(topology, src, dst, adapt(weight));
     }
 
     @Override
-    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst) {
+    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst,
+                              LinkWeigher weigher) {
+        checkNotNull(src, DEVICE_ID_NULL);
+        checkNotNull(dst, DEVICE_ID_NULL);
+        checkNotNull(weigher, LINK_WEIGHT_NULL);
+        return defaultTopology(topology).getPaths(src, dst, weigher);
+    }
+
+    @Override
+    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
+                                              DeviceId dst) {
         checkNotNull(src, DEVICE_ID_NULL);
         checkNotNull(dst, DEVICE_ID_NULL);
         return defaultTopology(topology).getDisjointPaths(src, dst);
@@ -153,14 +163,22 @@
     @Override
     public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
                                               DeviceId dst, LinkWeight weight) {
-        checkNotNull(src, DEVICE_ID_NULL);
-        checkNotNull(dst, DEVICE_ID_NULL);
-        checkNotNull(weight, LINK_WEIGHT_NULL);
-        return defaultTopology(topology).getDisjointPaths(src, dst, weight);
+        return getDisjointPaths(topology, src, dst, adapt(weight));
     }
 
     @Override
-    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
+    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
+                                              DeviceId dst,
+                                              LinkWeigher weigher) {
+        checkNotNull(src, DEVICE_ID_NULL);
+        checkNotNull(dst, DEVICE_ID_NULL);
+        checkNotNull(weigher, LINK_WEIGHT_NULL);
+        return defaultTopology(topology).getDisjointPaths(src, dst, weigher);
+    }
+
+    @Override
+    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
+                                              DeviceId dst,
                                               Map<Link, Object> riskProfile) {
         checkNotNull(src, DEVICE_ID_NULL);
         checkNotNull(dst, DEVICE_ID_NULL);
@@ -168,12 +186,22 @@
     }
 
     @Override
-    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src, DeviceId dst,
-                                              LinkWeight weight, Map<Link, Object> riskProfile) {
+    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
+                                              DeviceId dst, LinkWeight weight,
+                                              Map<Link, Object> riskProfile) {
+        return getDisjointPaths(topology, src, dst, adapt(weight), riskProfile);
+    }
+
+    @Override
+    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
+                                              DeviceId dst,
+                                              LinkWeigher weigher,
+                                              Map<Link, Object> riskProfile) {
         checkNotNull(src, DEVICE_ID_NULL);
         checkNotNull(dst, DEVICE_ID_NULL);
-        checkNotNull(weight, LINK_WEIGHT_NULL);
-        return defaultTopology(topology).getDisjointPaths(src, dst, weight, riskProfile);
+        checkNotNull(weigher, LINK_WEIGHT_NULL);
+        return defaultTopology(topology).getDisjointPaths(src, dst, weigher,
+                riskProfile);
     }
 
     @Override
diff --git a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManagerTest.java b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManagerTest.java
index 4e5a81c..11bfdc8 100644
--- a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManagerTest.java
+++ b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkTopologyManagerTest.java
@@ -42,6 +42,7 @@
 import org.onosproject.net.TestDeviceParams;
 import org.onosproject.net.intent.FakeIntentManager;
 import org.onosproject.net.intent.TestableIntentService;
+import org.onosproject.net.topology.LinkWeigher;
 import org.onosproject.net.topology.LinkWeight;
 import org.onosproject.net.topology.Topology;
 import org.onosproject.net.topology.TopologyCluster;
@@ -391,7 +392,8 @@
         VirtualDevice dstVirtualDevice = getVirtualDevice(virtualNetwork.id(), DID2);
 
         // test the getPaths() method using a null weight.
-        Set<Path> paths = topologyService.getPaths(topology, srcVirtualDevice.id(), dstVirtualDevice.id(), null);
+        Set<Path> paths = topologyService.getPaths(topology, srcVirtualDevice.id(),
+                dstVirtualDevice.id(), (LinkWeigher) null);
     }
 
     /**