diff --git a/bgp/bgpio/src/test/java/org/onosproject/bgpio/protocol/BgpOpenMsgTest.java b/bgp/bgpio/src/test/java/org/onosproject/bgpio/protocol/BgpOpenMsgTest.java
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+++ b/bgp/bgpio/src/test/java/org/onosproject/bgpio/protocol/BgpOpenMsgTest.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright 2014-2015 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.bgpio.protocol;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.junit.Test;
+import org.onosproject.bgpio.exceptions.BgpParseException;
+import org.onosproject.bgpio.types.BgpHeader;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.instanceOf;
+import static org.hamcrest.core.Is.is;
+
+/**
+ * Test cases for BGP Open Message.
+ */
+public class BgpOpenMsgTest {
+
+    /**
+     * This test case checks open message without optional parameter.
+     */
+    @Test
+    public void openMessageTest1() throws BgpParseException {
+        //Open message without optional parameter
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     0x00, 0x1d, 0x01, 0X04, (byte) 0xfe, 0x09, 0x00,
+                                     (byte) 0xb4, (byte) 0xc0, (byte) 0xa8, 0x00, 0x0f,
+                                     0x00};
+
+        byte[] testOpenMsg;
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+        message.writeTo(buf);
+
+        int readLen = buf.writerIndex();
+        testOpenMsg = new byte[readLen];
+        buf.readBytes(testOpenMsg, 0, readLen);
+
+        assertThat(testOpenMsg, is(openMsg));
+    }
+
+    /**
+     * This test case checks open message with Multiprotocol extension
+     * capability.
+     */
+    @Test
+    public void openMessageTest2() throws BgpParseException {
+
+        // OPEN Message (MultiProtocolExtension-CAPABILITY).
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, 0x00, 0x25,
+                                     0x01, //BGP Header
+                                     0X04, //Version
+                                     (byte) 0x00, (byte) 0xc8, // AS Number
+                                     0x00, (byte) 0xb4, // Hold time
+                                     (byte) 0xb6, (byte) 0x02, 0x5d,
+                                     (byte) 0xc8, // BGP Identifier
+                                     0x08, 0x02, 0x06, // Opt Parameter length
+                                     0x01, 0x04, 0x00, 0x00, 0x00, (byte) 0xc8}; // Multiprotocol CAPABILITY
+
+        byte[] testOpenMsg;
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+        message.writeTo(buf);
+
+        int readLen = buf.writerIndex();
+        testOpenMsg = new byte[readLen];
+        buf.readBytes(testOpenMsg, 0, readLen);
+
+        assertThat(testOpenMsg, is(openMsg));
+    }
+
+    /**
+     * This test case checks open message with Four-octet AS number
+     * capability.
+     */
+    @Test
+    public void openMessageTest3() throws BgpParseException {
+
+        // OPEN Message (Four-Octet AS number capability).
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, 0x00, 0x25,
+                                     0x01, //BGPHeader
+                                     0X04, //Version
+                                     (byte) 0x00, (byte) 0xc8, //AS Number
+                                     0x00, (byte) 0xb4, //Hold Time
+                                     (byte) 0xb6, (byte) 0x02, 0x5d,
+                                     (byte) 0xc8, //BGP Identifier
+                                     0x08, 0x02, 0x06, //Opt Parameter Length
+                                     0x41, 0x04, 0x00, 0x01, 0x00, 0x01}; //Four Octet AS Number-CAPABILITY-TLV
+
+        byte[] testOpenMsg;
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+        message.writeTo(buf);
+
+        int readLen = buf.writerIndex();
+        testOpenMsg = new byte[readLen];
+        buf.readBytes(testOpenMsg, 0, readLen);
+
+        assertThat(testOpenMsg, is(openMsg));
+    }
+
+    /**
+     * This test case checks open message with capabilities.
+     */
+    @Test
+    public void openMessageTest4() throws BgpParseException {
+
+        // OPEN Message with capabilities.
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                                     (byte) 0xff, 0x00, 0x2b,
+                                     0x01, //BGPHeader
+                                     0X04, //Version
+                                     (byte) 0x00, (byte) 0xc8, //AS Number
+                                     0x00, (byte) 0xb4, //Hold Time
+                                     (byte) 0xb6, (byte) 0x02, 0x5d, (byte) 0xc8, //BGP Identifier
+                                     0x0e, 0x02, 0x0c, //Opt Parameter Length
+                                     0x01, 0x04, 0x00, 0x00, 0x00, (byte) 0xc8, // Multiprotocol extension capability
+                                     0x41, 0x04, 0x00, 0x01, 0x00, 0x01}; //Four Octet AS Number-CAPABILITY-TLV
+
+        byte[] testOpenMsg;
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+        message.writeTo(buf);
+
+        int readLen = buf.writerIndex();
+        testOpenMsg = new byte[readLen];
+        buf.readBytes(testOpenMsg, 0, readLen);
+
+        assertThat(testOpenMsg, is(openMsg));
+    }
+
+    /**
+     * In this test case, Invalid version is given as input and expecting
+     * an exception.
+     */
+    @Test(expected = BgpParseException.class)
+    public void openMessageTest5() throws BgpParseException {
+
+        // OPEN Message with invalid version number.
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, 0x00, 0x1d, 0x01, 0X05,
+                (byte) 0xfe, 0x09, 0x00, (byte) 0xb4,
+                (byte) 0xc0, (byte) 0xa8, 0x00, 0x0f,
+                0x00};
+
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+    }
+
+    /**
+     * In this test case, Marker is set as 0 in input and expecting
+     * an exception.
+     */
+    @Test(expected = BgpParseException.class)
+    public void openMessageTest6() throws BgpParseException {
+
+        // OPEN Message with marker set to 0.
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0x00, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                 0x00, 0x00, 0x1d, 0x01, 0X04,
+                (byte) 0xfe, 0x09, 0x00, (byte) 0xb4,
+                (byte) 0xc0, (byte) 0xa8, 0x00, 0x0f,
+                0x00};
+
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+    }
+
+    /**
+     * In this test case, Invalid message length is given as input and expecting
+     * an exception.
+     */
+    @Test(expected = BgpParseException.class)
+    public void openMessageTest7() throws BgpParseException {
+
+        // OPEN Message with invalid header length.
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, 0x00, 0x1e, 0x01, 0X04,
+                (byte) 0xfe, 0x09, 0x00, (byte) 0xb4,
+                (byte) 0xc0, (byte) 0xa8, 0x00, 0x0f,
+                0x00};
+
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+    }
+
+    /**
+     * In this test case, Invalid message type is given as input and expecting
+     * an exception.
+     */
+    @Test(expected = BgpParseException.class)
+    public void openMessageTest8() throws BgpParseException {
+
+        // OPEN Message with invalid message type.
+        byte[] openMsg = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, 0x00, 0x1d, 0x05, 0X04,
+                (byte) 0xfe, 0x09, 0x00, (byte) 0xb4,
+                (byte) 0xc0, (byte) 0xa8, 0x00, 0x0f,
+                0x00};
+
+        ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
+        buffer.writeBytes(openMsg);
+
+        BgpMessageReader<BgpMessage> reader = BgpFactories.getGenericReader();
+        BgpMessage message;
+        BgpHeader bgpHeader = new BgpHeader();
+        message = reader.readFrom(buffer, bgpHeader);
+
+        assertThat(message, instanceOf(BgpOpenMsg.class));
+    }
+}