diff --git a/protocols/ospf/protocol/src/test/java/org/onosproject/ospf/protocol/lsa/types/NetworkLsaTest.java b/protocols/ospf/protocol/src/test/java/org/onosproject/ospf/protocol/lsa/types/NetworkLsaTest.java
new file mode 100644
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--- /dev/null
+++ b/protocols/ospf/protocol/src/test/java/org/onosproject/ospf/protocol/lsa/types/NetworkLsaTest.java
@@ -0,0 +1,230 @@
+/*
+ * 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.ospf.protocol.lsa.types;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.Ip4Address;
+import org.onosproject.ospf.controller.OspfLsaType;
+import org.onosproject.ospf.protocol.lsa.LsaHeader;
+
+
+import java.net.InetAddress;
+import java.util.Vector;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+
+/**
+ * Unit test class for NetworkLsa.
+ */
+public class NetworkLsaTest {
+
+    private Vector<String> attachedRouters = new Vector();
+    private NetworkLsa networkLsa;
+    private Ip4Address result;
+    private Ip4Address inetAddres;
+    private byte[] inputByteArray;
+    private LsaHeader lsaHeader;
+    private ChannelBuffer channelBuffer;
+    private byte[] result1;
+    private OspfLsaType ospflsaType;
+    private int result2;
+
+    @Before
+    public void setUp() throws Exception {
+        networkLsa = new NetworkLsa();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        networkLsa = null;
+        attachedRouters = null;
+        result = null;
+        inetAddres = null;
+        inputByteArray = null;
+        lsaHeader = null;
+        channelBuffer = null;
+        result1 = null;
+        ospflsaType = null;
+    }
+
+    /**
+     * Tests networkMask() getter method.
+     */
+    @Test
+    public void testGetNetworkMask() throws Exception {
+        networkLsa.setNetworkMask(Ip4Address.valueOf("10.226.165.164"));
+        result = networkLsa.networkMask();
+        assertThat(result, is(Ip4Address.valueOf("10.226.165.164")));
+    }
+
+    /**
+     * Tests networkMask() setter method.
+     */
+    @Test
+    public void testSetNetworkMask() throws Exception {
+        networkLsa.setNetworkMask(Ip4Address.valueOf("10.226.165.165"));
+        result = networkLsa.networkMask();
+        result = networkLsa.networkMask();
+        assertThat(result, is(Ip4Address.valueOf("10.226.165.165")));
+    }
+
+    /**
+     * Tests addAttachedRouter() getter method.
+     */
+    @Test
+    public void testGetAttachedRouters() throws Exception {
+        attachedRouters.add("1.1.1.1");
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("1.1.1.1"));
+        assertThat(attachedRouters, is(notNullValue()));
+    }
+
+    /**
+     * Tests addAttachedRouter() setter method.
+     */
+    @Test
+    public void testSetAttachedRouters() throws Exception {
+        attachedRouters.add("1.1.1.1");
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("1.1.1.1"));
+        assertThat(attachedRouters, is(notNullValue()));
+    }
+
+    /**
+     * Tests addAttachedRouter() method.
+     */
+    @Test
+    public void testAddAttachedRouter() throws Exception {
+        inetAddres = Ip4Address.valueOf(InetAddress.getLocalHost());
+        networkLsa.addAttachedRouter(inetAddres);
+        inetAddres = Ip4Address.valueOf(InetAddress.getLocalHost());
+        networkLsa.addAttachedRouter(inetAddres);
+        assertThat(networkLsa, is(notNullValue()));
+    }
+
+    /**
+     * Tests readFrom() method.
+     */
+
+    @Test
+    public void testReadFrom() throws Exception {
+        inputByteArray = createByteForNetworkLsa();
+        lsaHeader = createLsaHeader();
+        networkLsa = new NetworkLsa(lsaHeader);
+        channelBuffer = ChannelBuffers.copiedBuffer(inputByteArray);
+        networkLsa.readFrom(channelBuffer);
+        assertThat(networkLsa, is(notNullValue()));
+    }
+
+    /**
+     * Tests readFrom() method.
+     */
+    @Test(expected = Exception.class)
+    public void testReadFrom1() throws Exception {
+        byte[] temp = {0, 0, 0};
+        inputByteArray = temp;
+        lsaHeader = createLsaHeader();
+        networkLsa = new NetworkLsa(lsaHeader);
+        channelBuffer = ChannelBuffers.copiedBuffer(inputByteArray);
+        networkLsa.readFrom(channelBuffer);
+        assertThat(networkLsa, is(notNullValue()));
+    }
+
+    /**
+     * Tests asBytes() method.
+     */
+    @Test(expected = Exception.class)
+    public void testAsBytes() throws Exception {
+        result1 = networkLsa.asBytes();
+        assertThat(result1, is(notNullValue()));
+    }
+
+    /**
+     * Tests getLsaBodyAsByteArray() method.
+     */
+    @Test(expected = Exception.class)
+    public void testGetLsaBodyAsByteArray() throws Exception {
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("1.1.1.1"));
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("2.2.2.2"));
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("3.3.3.3"));
+        result1 = networkLsa.getLSABodyAsByteArray();
+        assertThat(result1, is(notNullValue()));
+    }
+
+    /**
+     * Tests getLsaBodyAsByteArray() method.
+     */
+    @Test
+    public void testGetLsaBodyAsByteArray1() throws Exception {
+        networkLsa.setNetworkMask(Ip4Address.valueOf("255.255.255.255"));
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("1.1.1.1"));
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("2.2.2.2"));
+        networkLsa.addAttachedRouter(Ip4Address.valueOf("3.3.3.3"));
+        result1 = networkLsa.getLSABodyAsByteArray();
+        assertThat(result1, is(notNullValue()));
+    }
+
+    /**
+     * Tests getOspfLsaType() getter method.
+     */
+    @Test
+    public void testGetOspfLsaType() throws Exception {
+        networkLsa.setLsType(2);
+        ospflsaType = networkLsa.getOspfLsaType();
+        assertThat(ospflsaType, is(OspfLsaType.NETWORK));
+    }
+
+    /**
+     * Tests hashCode() method.
+     */
+    @Test
+    public void testHashcode() throws Exception {
+
+        result2 = networkLsa.hashCode();
+        assertThat(result2, is(notNullValue()));
+
+    }
+
+    /**
+     * Utility method used by junit methods.
+     */
+    private byte[] createByteForNetworkLsa() {
+        byte[] packet = {2, 1, 1, 52, -64, -88, 56, 1, -64, -88, 56, 1, 0, 100, 0, 100, 0, 0, 0, 0, 0, 0, 0, 0, -64,
+                -88, 56, 1, 0, 10, 1, 1, 0, 0, 0, 40, -64, -88, 56, 1, -64, -88, 56, 1, -64, -88, 56, 1, -64, -88, 56,
+                1};
+        return packet;
+    }
+
+    /**
+     * Utility method used by junit methods.
+     */
+    private LsaHeader createLsaHeader() {
+        lsaHeader = new LsaHeader();
+        lsaHeader.setLsType(2);
+        lsaHeader.setLsPacketLen(48);
+        lsaHeader.setLsCheckSum(10);
+        lsaHeader.setAge(4);
+        lsaHeader.setLinkStateId("10.226.165.164");
+        lsaHeader.setLsSequenceNo(250);
+        lsaHeader.setAdvertisingRouter(Ip4Address.valueOf("100.226.165.165"));
+        lsaHeader.setOptions(2);
+        return lsaHeader;
+    }
+}
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