diff --git a/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/LspKey.java b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/LspKey.java
new file mode 100644
index 0000000..5dee845
--- /dev/null
+++ b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/LspKey.java
@@ -0,0 +1,85 @@
+/*
+ * 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.pcep.controller;
+
+import java.util.Objects;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Representation of LSP info, it will be unique for each LSP.
+ */
+public class LspKey {
+    private int plspId;
+    private short localLspId;
+
+    /**
+     * Creates new instance of LspInfo.
+     *
+     * @param plspId LSP id assigned per tunnel per session
+     * @param localLspId LSP id assigned per tunnel
+     */
+    public LspKey(int plspId, short localLspId) {
+        this.plspId = plspId;
+        this.localLspId = localLspId;
+    }
+
+    /**
+     * Obtains PLSP id.
+     *
+     * @return LSP id assigned per tunnel per session
+     */
+    public int plspId() {
+        return plspId;
+    }
+
+    /**
+     * Obtains local LSP id.
+     *
+     * @return LSP id assigned per tunnel
+     */
+    public short localLspId() {
+        return localLspId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(plspId, localLspId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof LspKey) {
+            LspKey other = (LspKey) obj;
+            return Objects.equals(plspId, other.plspId)
+                    && Objects.equals(localLspId, other.localLspId);
+        }
+
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("plspId", plspId)
+                .add("localLspId", localLspId)
+                .toString();
+    }
+}
\ No newline at end of file
diff --git a/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepClient.java b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepClient.java
index 6ab804c..297d71e 100644
--- a/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepClient.java
+++ b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepClient.java
@@ -149,4 +149,20 @@
      * @param pccId PCEP client ID
      */
     void deleteNode(PccId pccId);
+
+     /**
+     * Sets D flag for the given LSP and its LSP info.
+     *
+     * @param lspKey contains LSP info
+     * @param dFlag delegation flag in LSP object
+     */
+    void setLspAndDelegationInfo(LspKey lspKey, boolean dFlag);
+
+    /**
+     * Returns delegation flag for the given LSP info.
+     *
+     * @param lspKey contains LSP info
+     * @return delegation flag
+     */
+    Boolean delegationInfo(LspKey lspKey);
 }