diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangTypeDef.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangTypeDef.java
new file mode 100644
index 0000000..57ef9dd
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangTypeDef.java
@@ -0,0 +1,306 @@
+/*
+ * 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.yangutils.datamodel;
+
+import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.parser.Parsable;
+import org.onosproject.yangutils.parser.ParsableDataType;
+
+/*-
+ * Reference RFC 6020.
+ *
+ * The "typedef" statement defines a new type that may be used locally in the
+ * module, in modules or submodules which include it, and by other modules that
+ * import from it. The new type is called the "derived type", and the type from
+ * which it was derived is called the "base type". All derived types can be
+ * traced back to a YANG built-in type.
+ *
+ * The "typedef" statement's argument is an identifier that is the name of the
+ * type to be defined, and MUST be followed by a block of sub-statements that
+ * holds detailed typedef information.
+ *
+ * The name of the type MUST NOT be one of the YANG built-in types. If the
+ * typedef is defined at the top level of a YANG module or submodule, the name
+ * of the type to be defined MUST be unique within the module.
+ * The typedef's sub-statements
+ *
+ *                +--------------+---------+-------------+------------------+
+ *                | substatement | section | cardinality |data model mapping|
+ *                +--------------+---------+-------------+------------------+
+ *                | default      | 7.3.4   | 0..1        |-string           |
+ *                | description  | 7.19.3  | 0..1        |-string           |
+ *                | reference    | 7.19.4  | 0..1        |-string           |
+ *                | status       | 7.19.2  | 0..1        |-YangStatus       |
+ *                | type         | 7.3.2   | 1           |-yangType         |
+ *                | units        | 7.3.3   | 0..1        |-string           |
+ *                +--------------+---------+-------------+------------------+
+ */
+/**
+ * Data model node to maintain information defined in YANG typedef.
+ */
+public class YangTypeDef extends YangNode implements YangCommonInfo, Parsable {
+
+    /**
+     * Name of derived data type.
+     */
+    private String derivedName;
+
+    /**
+     * Default value in string, needs to be converted to the target object,
+     * based on the type.
+     */
+    private String defaultValueInString;
+
+    /**
+     * Description of new type.
+     */
+    private String description;
+
+    /**
+     * reference string.
+     */
+    private String reference;
+
+    /**
+     * Status of the data type.
+     */
+    private YangStatusType status;
+
+    /**
+     * Derived data type.
+     */
+    @SuppressWarnings("rawtypes")
+    private YangType derivedType;
+
+    /**
+     * Units of the data type.
+     */
+    private String units;
+
+    /**
+     * Create a typedef node.
+     */
+    public YangTypeDef() {
+        super(YangNodeType.TYPEDEF_NODE);
+    }
+
+    /**
+     * Get the data type name.
+     *
+     * @return the data type name.
+     */
+    public String getDerivedName() {
+        return derivedName;
+    }
+
+    /**
+     * Set the data type name.
+     *
+     * @param derrivedName data type name.
+     */
+    public void setDerivedName(String derrivedName) {
+        derivedName = derrivedName;
+    }
+
+    /**
+     * Get the default value.
+     *
+     * @return the default value.
+     */
+    public String getDefaultValueInString() {
+        return defaultValueInString;
+    }
+
+    /**
+     * Set the default value.
+     *
+     * @param defaultValueInString the default value.
+     */
+    public void setDefaultValueInString(String defaultValueInString) {
+        this.defaultValueInString = defaultValueInString;
+    }
+
+    /**
+     * Get the description.
+     *
+     * @return the description.
+     */
+    public String getDescription() {
+        return description;
+    }
+
+    /**
+     * Set the description.
+     *
+     * @param description set the description.
+     */
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    /**
+     * Get the textual reference.
+     *
+     * @return the reference.
+     */
+    public String getReference() {
+        return reference;
+    }
+
+    /**
+     * Set the textual reference.
+     *
+     * @param reference the reference to set.
+     */
+    public void setReference(String reference) {
+        this.reference = reference;
+    }
+
+    /**
+     * Get the status.
+     *
+     * @return the status.
+     */
+    public YangStatusType getStatus() {
+        return status;
+    }
+
+    /**
+     * Set the status.
+     *
+     * @param status the status to set.
+     */
+    public void setStatus(YangStatusType status) {
+        this.status = status;
+    }
+
+    /**
+     * Get the referenced type.
+     *
+     * @return the referenced type.
+     */
+    @SuppressWarnings("rawtypes")
+    public YangType getDerivedType() {
+        return derivedType;
+    }
+
+    /**
+     * Get the referenced type.
+     *
+     * @param derivedType the referenced type.
+     */
+    @SuppressWarnings("rawtypes")
+    public void setDerivedType(YangType derivedType) {
+        this.derivedType = derivedType;
+    }
+
+    /**
+     * Get the unit.
+     *
+     * @return the units
+     */
+    public String getUnits() {
+        return units;
+    }
+
+    /**
+     * Set the unit.
+     *
+     * @param units the units to set
+     */
+    public void setUnits(String units) {
+        this.units = units;
+    }
+
+    /**
+     * Returns the type of the data.
+     *
+     * @return returns TYPEDEF_DATA
+     */
+    public ParsableDataType getParsableDataType() {
+        return ParsableDataType.TYPEDEF_DATA;
+    }
+
+    /**
+     * Validate the data on entering the corresponding parse tree node.
+     *
+     * @throws DataModelException a violation of data model rules.
+     */
+    public void validateDataOnEntry() throws DataModelException {
+        // TODO auto-generated method stub, to be implemented by parser
+    }
+
+    /**
+     * Validate the data on exiting the corresponding parse tree node.
+     *
+     * @throws DataModelException a violation of data model rules.
+     */
+    public void validateDataOnExit() throws DataModelException {
+        // TODO auto-generated method stub, to be implemented by parser
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.datamodel.YangNode#getName()
+     */
+    @Override
+    public String getName() {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.datamodel.YangNode#setName(java.lang.String)
+     */
+    @Override
+    public void setName(String name) {
+        // TODO Auto-generated method stub
+
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.translator.CodeGenerator#generateJavaCodeEntry()
+     */
+    public void generateJavaCodeEntry() {
+        // TODO Auto-generated method stub
+
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.translator.CodeGenerator#generateJavaCodeExit()
+     */
+    public void generateJavaCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.datamodel.YangNode#getPackage()
+     */
+    @Override
+    public String getPackage() {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    /* (non-Javadoc)
+     * @see org.onosproject.yangutils.datamodel.YangNode#setPackage(java.lang.String)
+     */
+    @Override
+    public void setPackage(String pkg) {
+        // TODO Auto-generated method stub
+
+    }
+}