diff --git a/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/UnreservedBandwidthSubTlv.java b/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/UnreservedBandwidthSubTlv.java
new file mode 100644
index 0000000..859199e
--- /dev/null
+++ b/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/UnreservedBandwidthSubTlv.java
@@ -0,0 +1,136 @@
+/*
+ * 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.pcepio.types;
+
+import java.util.Objects;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.pcepio.protocol.PcepVersion;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Provides Unreserved Bandwidth Tlv.
+ */
+public class UnreservedBandwidthSubTlv implements PcepValueType {
+
+    /* Reference :[RFC5305]/3.6
+     0                   1                   2                   3
+     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    |           Type=[TDB36]        |             Length=4          |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    |                 Unreserved Bandwidth                          |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+     */
+
+    protected static final Logger log = LoggerFactory.getLogger(UnreservedBandwidthSubTlv.class);
+
+    public static final short TYPE = 25;
+    public static final short LENGTH = 4;
+
+    private final int rawValue;
+
+    /**
+     * Constructor to initialize rawValue.
+     *
+     * @param rawValue Unreserved Bandwidth
+     */
+    public UnreservedBandwidthSubTlv(int rawValue) {
+        this.rawValue = rawValue;
+    }
+
+    /**
+     * Returns newly created UnreservedBandwidthTlv object.
+     *
+     * @param raw as Unreserved Bandwidth
+     * @return object of UnreservedBandwidthTlv
+     */
+    public static UnreservedBandwidthSubTlv of(final int raw) {
+        return new UnreservedBandwidthSubTlv(raw);
+    }
+
+    /**
+     * Returns Unreserved Bandwidth.
+     *
+     * @return rawValue Unreserved Bandwidth
+     */
+    public int getInt() {
+        return rawValue;
+    }
+
+    @Override
+    public PcepVersion getVersion() {
+        return PcepVersion.PCEP_1;
+    }
+
+    @Override
+    public short getType() {
+        return TYPE;
+    }
+
+    @Override
+    public short getLength() {
+        return LENGTH;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(rawValue);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof UnreservedBandwidthSubTlv) {
+            UnreservedBandwidthSubTlv other = (UnreservedBandwidthSubTlv) obj;
+            return Objects.equals(this.rawValue, other.rawValue);
+        }
+        return false;
+    }
+
+    @Override
+    public int write(ChannelBuffer c) {
+        int iLenStartIndex = c.writerIndex();
+        c.writeShort(TYPE);
+        c.writeShort(LENGTH);
+        c.writeInt(rawValue);
+        return c.writerIndex() - iLenStartIndex;
+    }
+
+    /**
+     * Reads byte stream from channel buffer and returns object of UnreservedBandwidthTlv.
+     *
+     * @param c input channel buffer
+     * @return object of UnreservedBandwidthTlv
+     */
+    public static UnreservedBandwidthSubTlv read(ChannelBuffer c) {
+        return UnreservedBandwidthSubTlv.of(c.readInt());
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("Type", TYPE)
+                .add("Length", LENGTH)
+                .add("Value", rawValue)
+                .toString();
+    }
+}