diff --git a/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/LinkProtectionType.java b/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/LinkProtectionType.java
new file mode 100644
index 0000000..bcbdf0c
--- /dev/null
+++ b/apps/tetopology/src/main/java/org/onosproject/tetopology/management/api/link/LinkProtectionType.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2016-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.tetopology.management.api.link;
+
+/**
+ * Represents ENUM data of linkProtectionType.
+ */
+public enum LinkProtectionType {
+
+    /**
+     * Represents unprotected.
+     */
+    UNPROTECTED(0),
+
+    /**
+     * Represents extraTraffic.
+     */
+    EXTRA_TRAFFIC(1),
+
+    /**
+     * Represents shared.
+     */
+    SHARED(2),
+
+    /**
+     * Represents yangAutoPrefix1For1.
+     */
+    YANGAUTOPREFIX1_FOR_1(3),
+
+    /**
+     * Represents yangAutoPrefix1Plus1.
+     */
+    YANGAUTOPREFIX1_PLUS_1(4),
+
+    /**
+     * Represents enhanced.
+     */
+    ENHANCED(5);
+
+    private int linkProtectionType;
+
+    LinkProtectionType(int value) {
+        linkProtectionType = value;
+    }
+
+    /**
+     * Returns the attribute linkProtectionType.
+     *
+     * @return value of linkProtectionType
+     */
+    public int linkProtectionType() {
+        return linkProtectionType;
+    }
+
+    /**
+     * Returns the object of linkProtectionType from input String. Returns null
+     * when string conversion fails or converted integer value is not recognized.
+     *
+     * @param valInString input String
+     * @return Object of linkProtectionType
+     */
+    public static LinkProtectionType of(String valInString) {
+        try {
+            int tmpVal = Integer.parseInt(valInString);
+            return of(tmpVal);
+        } catch (NumberFormatException e) {
+        }
+        return null;
+    }
+
+    /**
+     * Returns the object of linkProtectionType from input integer. Returns null
+     * when the integer value is not recognized.
+     *
+     * @param value value of linkProtectionTypeForTypeInt
+     * @return Object of linkProtectionTypeForTypeInt
+     */
+    public static LinkProtectionType of(int value) {
+        switch (value) {
+            case 0:
+                return LinkProtectionType.UNPROTECTED;
+            case 1:
+                return LinkProtectionType.EXTRA_TRAFFIC;
+            case 2:
+                return LinkProtectionType.SHARED;
+            case 3:
+                return LinkProtectionType.YANGAUTOPREFIX1_FOR_1;
+            case 4:
+                return LinkProtectionType.YANGAUTOPREFIX1_PLUS_1;
+            case 5:
+                return LinkProtectionType.ENHANCED;
+            default :
+                return null;
+        }
+    }
+
+
+}