diff --git a/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/DefaultNetworkLink.java b/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/DefaultNetworkLink.java
new file mode 100644
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--- /dev/null
+++ b/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/DefaultNetworkLink.java
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2016 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.
+ */
+package org.onosproject.tetopology.management.api.link;
+
+import java.util.List;
+
+import org.onosproject.tetopology.management.api.KeyId;
+import org.onosproject.tetopology.management.api.node.TerminationPointKey;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.base.Objects;
+
+/**
+ * NetworkLink implementation.
+ * <p>
+ * The Set/Get methods below are defined to accept and pass references because
+ * the object class is treated as a "composite" object class that holds
+ * references to various member objects and their relationships, forming a
+ * data tree. Internal routines of the TE topology manager may use the
+ * following example methods to construct and manipulate any piece of data in
+ * the data tree:
+ *<pre>
+ * newNode.getTe().setAdminStatus(), or
+ * newNode.getSupportingNodeIds().add(nodeId), etc.
+ *</pre>
+ * Same for constructors where, for example, a child list may be constructed
+ * first and passed in by reference to its parent object constructor.
+ */
+public class DefaultNetworkLink implements NetworkLink {
+    private final KeyId linkId;
+    private TerminationPointKey source;
+    private TerminationPointKey destination;
+    private List<NetworkLinkKey> supportingLinkIds;
+    private TeLink te;
+
+    /**
+     * Creates an instance of DefaultNetworkLink.
+     *
+     * @param linkId link identifier
+     */
+    public DefaultNetworkLink(KeyId linkId) {
+        this.linkId = linkId;
+    }
+
+    /**
+     * Sets the link source point.
+     *
+     * @param source the source to set
+     */
+    public void setSource(TerminationPointKey source) {
+        this.source = source;
+    }
+
+    /**
+     * Sets the link destination point.
+     *
+     * @param destination the destination to set
+     */
+    public void setDestination(TerminationPointKey destination) {
+        this.destination = destination;
+    }
+
+    /**
+     * Sets the supporting link Ids.
+     *
+     * @param supportingLinkIds the supportingLinkIds to set
+     */
+    public void setSupportingLinkIds(List<NetworkLinkKey> supportingLinkIds) {
+        this.supportingLinkIds = supportingLinkIds;
+    }
+
+    /**
+     * Sets the te extension.
+     *
+     * @param te the te to set
+     */
+    public void setTe(TeLink te) {
+        this.te = te;
+    }
+
+    @Override
+    public KeyId linkId() {
+        return linkId;
+    }
+
+    @Override
+    public TerminationPointKey getSource() {
+        return source;
+    }
+
+    @Override
+    public TerminationPointKey getDestination() {
+        return destination;
+    }
+    @Override
+    public List<NetworkLinkKey> getSupportingLinkIds() {
+        return supportingLinkIds;
+    }
+
+    @Override
+    public TeLink getTe() {
+        return te;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(linkId, source, destination, supportingLinkIds, te);
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object) {
+            return true;
+        }
+        if (object instanceof DefaultNetworkLink) {
+            DefaultNetworkLink that = (DefaultNetworkLink) object;
+            return Objects.equal(this.linkId, that.linkId) &&
+                    Objects.equal(this.source, that.source) &&
+                    Objects.equal(this.destination, that.destination) &&
+                    Objects.equal(this.supportingLinkIds, that.supportingLinkIds) &&
+                    Objects.equal(this.te, that.te);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("linkId", linkId)
+                .add("source", source)
+                .add("destination", destination)
+                .add("supportingLinkIds", supportingLinkIds)
+                .add("te", te)
+                .toString();
+    }
+
+}