diff --git a/core/net/src/test/java/org/onosproject/net/config/basics/PortAnnotationConfigTest.java b/core/net/src/test/java/org/onosproject/net/config/basics/PortAnnotationConfigTest.java
new file mode 100644
index 0000000..48e3ce3
--- /dev/null
+++ b/core/net/src/test/java/org/onosproject/net/config/basics/PortAnnotationConfigTest.java
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2017-present 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.net.config.basics;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.*;
+import static org.onosproject.net.ConnectPoint.deviceConnectPoint;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onlab.junit.TestUtils;
+import org.onlab.junit.TestUtils.TestUtilsException;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.osgi.TestServiceDirectory;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.config.BaseConfig;
+import org.onosproject.net.config.ConfigApplyDelegate;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.JsonNodeFactory;
+import com.fasterxml.jackson.databind.node.NumericNode;
+import com.google.common.collect.ImmutableMap;
+
+public class PortAnnotationConfigTest {
+
+    private static final String SAMPLE_JSONFILE = "port_annotation_config.json";
+
+    private static TestServiceDirectory directory;
+    private static ServiceDirectory original;
+
+    private ObjectMapper mapper;
+
+    private final ConfigApplyDelegate noopDelegate = cfg -> { };
+
+    /**
+     * {@value #SAMPLE_JSONFILE} after parsing.
+     */
+    private JsonNode node;
+
+    // sample data
+    private final ConnectPoint cp = deviceConnectPoint("of:0000000000000001/2");
+
+    private final String key = "foo";
+    private final String value = "bar";
+
+
+    // TODO consolidate code-clone in ProtectionConfigTest, and define constants for field name
+    @BeforeClass
+    public static void setUpClass() throws TestUtilsException {
+        directory = new TestServiceDirectory();
+
+        CodecManager codecService = new CodecManager();
+        codecService.activate();
+        directory.add(CodecService.class, codecService);
+
+        // replace service directory used by BaseConfig
+        original = TestUtils.getField(BaseConfig.class, "services");
+        TestUtils.setField(BaseConfig.class, "services", directory);
+    }
+
+    @AfterClass
+    public static void tearDownClass() throws TestUtilsException {
+        TestUtils.setField(BaseConfig.class, "services", original);
+    }
+
+    @Before
+    public void setUp() throws JsonProcessingException, IOException, TestUtilsException {
+
+        mapper = new ObjectMapper();
+        // Jackson configuration for ease of Numeric node comparison
+        // - treat integral number node as long node
+        mapper.enable(DeserializationFeature.USE_LONG_FOR_INTS);
+        mapper.setNodeFactory(new JsonNodeFactory(false) {
+            @Override
+            public NumericNode numberNode(int v) {
+                return super.numberNode((long) v);
+            }
+            @Override
+            public NumericNode numberNode(short v) {
+                return super.numberNode((long) v);
+            }
+        });
+
+        InputStream stream = PortAnnotationConfig.class
+                                .getResourceAsStream(SAMPLE_JSONFILE);
+        JsonNode tree = mapper.readTree(stream);
+
+        node = tree.path("ports")
+                            .path(cp.toString())
+                            .path(PortAnnotationConfig.CONFIG_KEY);
+        assertTrue(node.isObject());
+    }
+
+    @Test
+    public void readTest() {
+        PortAnnotationConfig sut = new PortAnnotationConfig();
+        sut.init(cp, PortAnnotationConfig.CONFIG_KEY, node, mapper, noopDelegate);
+
+        assertThat(sut.subject(), is(cp));
+        Map<String, String> annotations = sut.annotations();
+        assertThat(annotations.size(), is(1));
+        assertThat(annotations.get(key), is(value));
+    }
+
+    public void writeEntryTest() throws JsonProcessingException, IOException {
+
+        PortAnnotationConfig w = new PortAnnotationConfig();
+        w.init(cp, PortAnnotationConfig.CONFIG_KEY, mapper.createObjectNode(), mapper, noopDelegate);
+
+        // write equivalent to sample
+        w.annotation(key, value);
+
+        // reparse JSON
+        JsonNode r = mapper.readTree(mapper.writeValueAsString(w.node()));
+
+        PortAnnotationConfig sut = new PortAnnotationConfig();
+        sut.init(cp, PortAnnotationConfig.CONFIG_KEY, r, mapper, noopDelegate);
+
+        assertThat(sut.subject(), is(cp));
+        Map<String, String> annotations = sut.annotations();
+        assertThat(annotations.size(), is(1));
+        assertThat(annotations.get(key), is(value));
+    }
+
+    public void writeMapTest() throws JsonProcessingException, IOException {
+
+        PortAnnotationConfig w = new PortAnnotationConfig();
+        w.init(cp, PortAnnotationConfig.CONFIG_KEY, mapper.createObjectNode(), mapper, noopDelegate);
+
+        // write equivalent to sample
+        w.annotations(ImmutableMap.of(key, value));
+
+        // reparse JSON
+        JsonNode r = mapper.readTree(mapper.writeValueAsString(w.node()));
+
+        PortAnnotationConfig sut = new PortAnnotationConfig();
+        sut.init(cp, PortAnnotationConfig.CONFIG_KEY, r, mapper, noopDelegate);
+
+        assertThat(sut.subject(), is(cp));
+        Map<String, String> annotations = sut.annotations();
+        assertThat(annotations.size(), is(1));
+        assertThat(annotations.get(key), is(value));
+    }
+
+}