diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Model.js b/web/gui/src/main/webapp/app/view/topo2/topo2Model.js
new file mode 100644
index 0000000..fa40d65
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+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Model.js
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+/*
+ ONOS GUI -- Topology Force Module.
+ Visualization of the topology in an SVG layer, using a D3 Force Layout.
+ */
+
+(function () {
+    'use strict';
+
+    function Model(attributes) {
+
+        var attrs = attributes || {};
+        this.attributes = {};
+
+        attrs = angular.extend({}, attrs);
+        this.set(attrs);
+    }
+
+    Model.prototype = {
+
+        get: function (attr) {
+            return this.attributes[attr];
+        },
+
+        set: function(data) {
+            angular.extend(this.attributes, data);
+        },
+    };
+
+
+    Model.extend = function (protoProps, staticProps) {
+
+        var parent = this;
+        var child;
+
+        child = function () {
+            return parent.apply(this, arguments);
+        };
+
+        angular.extend(child, parent, staticProps);
+
+        // Set the prototype chain to inherit from `parent`, without calling
+        // `parent`'s constructor function and add the prototype properties.
+        child.prototype = angular.extend({}, parent.prototype, protoProps);
+        child.prototype.constructor = child;
+
+        // Set a convenience property in case the parent's prototype is needed
+        // later.
+        child.__super__ = parent.prototype;
+
+        return child;
+    };
+
+    angular.module('ovTopo2')
+        .factory('Topo2Model',
+        [
+            function () {
+                return Model;
+            }
+        ]);
+
+})();