diff --git a/xos/core/models/service.py b/xos/core/models/service.py
index 7cc5cb7..2b450e0 100644
--- a/xos/core/models/service.py
+++ b/xos/core/models/service.py
@@ -168,16 +168,38 @@
 
                 # print "add instance", s
 
-    def get_vtn_dependencies(self):
-        provider_net_ids = []
+    def get_vtn_nets(self):
+        nets=[]
+        for slice in self.slices.all():
+            for ns in slice.networkslices.all():
+                if not ns.network:
+                    continue
+                for cn in ns.network.controllernetworks.all():
+                    if cn.net_id:
+                        net = {"name": ns.network.name, "net_id": cn.net_id}
+                        nets.append(net)
+        return nets
+
+    def get_vtn_dependencies_nets(self):
+        provider_nets = []
         for tenant in self.subscribed_tenants.all():
             if tenant.provider_service:
-                for slice in tenant.provider_service.slices.all():
-                    for ns in slice.networkslices.all():
-                        if ns.network:
-                            if not (ns.network.id) in provider_net_ids:
-                                provider_net_ids.append(ns.network_id)
-        return provider_net_ids
+                for net in tenant.provider_service.get_vtn_nets():
+                    if not net in provider_nets:
+                        provider_nets.append(net)
+        return provider_nets
+
+    def get_vtn_dependencies_ids(self):
+        return [x["net_id"] for x in self.get_vtn_dependencies_nets()]
+
+    def get_vtn_dependencies_names(self):
+        return [x["name"]+"_"+x["net_id"] for x in self.get_vtn_dependencies_nets()]
+
+    def get_vtn_ids(self):
+        return [x["net_id"] for x in self.get_vtn_nets()]
+
+    def get_vtn_names(self):
+        return [x["name"]+"_"+x["net_id"] for x in self.get_vtn_nets()]
 
 
 class ServiceAttribute(PlCoreBase):
diff --git a/xos/core/xoslib/methods/vtn.py b/xos/core/xoslib/methods/vtn.py
index 9c96fc5..a912613 100644
--- a/xos/core/xoslib/methods/vtn.py
+++ b/xos/core/xoslib/methods/vtn.py
@@ -30,19 +30,34 @@
     def get_urlpatterns(self):
         patterns = []
         patterns.append( self.list_url("services/$", {"get": "get_services"}, "services") )
+        patterns.append( self.list_url("services_names/$", {"get": "get_services_names"}, "services") )
         patterns.append( self.list_url("services/(?P<service>[a-zA-Z0-9\-_]+)/$", {"get": "get_service"}, "get_service") )
 
         return patterns
 
+    def get_services_names(self, request, pk=None):
+        result = {}
+        for service in Service.objects.all():
+           for id in service.get_vtn_names():
+               dependencies = service.get_vtn_dependencies_names()
+               if dependencies:
+                   result[id] = dependencies
+        return Response(result)
+
     def get_services(self, request, pk=None):
         result = {}
         for service in Service.objects.all():
-           result[service.id] = service.get_vtn_dependencies()
+           for id in service.get_vtn_ids():
+               dependencies = service.get_vtn_dependencies_ids()
+               if dependencies:
+                   result[id] = dependencies
         return Response(result)
 
     def get_service(self, request, pk=None, service=None):
-        result=Service.objects.get(pk = service).get_vtn_dependencies()
-        return Response(result)
+        for xos_service in Service.objects.all():
+            if service in xos_service.get_vtn_ids():
+                return Response(xos_service.get_vtn_dependencies_ids())
+        raise DoesNotExist()
 
     def list(self, request):
         raise Exception("Not Implemented")