diff --git a/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/IsoNodeId.java b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/IsoNodeId.java
new file mode 100644
index 0000000..8bb3d8b
--- /dev/null
+++ b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/IsoNodeId.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2015 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.iptopology.api;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+import java.util.Objects;
+
+/**
+ * Represents ISO system id of the device.
+ */
+public class IsoNodeId implements RouteIdentifier {
+    private final byte[] isoNodeId;
+    private final ProtocolType type;
+
+    /**
+     * Constructor to initialize the values.
+     *
+     * @param isoNodeId ISO system-ID
+     * @param type Protocol type
+     */
+    public IsoNodeId(byte[] isoNodeId, ProtocolType type) {
+        this.isoNodeId = isoNodeId;
+        this.type = type;
+    }
+
+    /**
+     * Obtains ISO system id of the device.
+     *
+     * @return ISO system id
+     */
+    public byte[] isoNodeId() {
+        return isoNodeId;
+    }
+
+    @Override
+    public ProtocolType type() {
+        return type;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(isoNodeId, type);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof IsoNodeId) {
+            IsoNodeId other = (IsoNodeId) obj;
+            return Objects.equals(isoNodeId, other.isoNodeId) && Objects.equals(type, other.type);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("isoNodeId", isoNodeId)
+                .add("type", type)
+                .toString();
+    }
+}
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