diff --git a/protocols/pcep/server/api/src/main/java/org/onosproject/pcep/server/PcepClientController.java b/protocols/pcep/server/api/src/main/java/org/onosproject/pcep/server/PcepClientController.java
new file mode 100644
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+++ b/protocols/pcep/server/api/src/main/java/org/onosproject/pcep/server/PcepClientController.java
@@ -0,0 +1,177 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * 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.server;
+
+import org.onosproject.incubator.net.tunnel.DefaultLabelStack;
+import org.onosproject.incubator.net.tunnel.LabelStack;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.net.Path;
+import org.onosproject.pcepio.protocol.PcepMessage;
+import org.onosproject.pcepio.types.PcepValueType;
+
+import java.util.Collection;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Abstraction of an Pcep client controller. Serves as a one stop
+ * shop for obtaining Pcep devices and (un)register listeners
+ * on pcep events
+ */
+public interface PcepClientController {
+
+    /**
+     * Returns list of pcc clients connected to this Pcep controller.
+     *
+     * @return list of PcepClient elements
+     */
+    Collection<PcepClient> getClients();
+
+    /**
+     * Returns the actual pcc client for the given ip address.
+     *
+     * @param pccId the id of the pcc client to fetch
+     * @return the interface to this pcc client
+     */
+    PcepClient getClient(PccId pccId);
+
+    /**
+     * Register a listener for meta events that occur to pcep
+     * devices.
+     *
+     * @param listener the listener to notify
+     */
+    void addListener(PcepClientListener listener);
+
+    /**
+     * Unregister a listener.
+     *
+     * @param listener the listener to unregister
+     */
+    void removeListener(PcepClientListener listener);
+
+    /**
+     * Register a listener for PCEP msg events.
+     *
+     * @param listener the listener to notify
+     */
+    void addEventListener(PcepEventListener listener);
+
+    /**
+     * Unregister a listener.
+     *
+     * @param listener the listener to unregister
+     */
+    void removeEventListener(PcepEventListener listener);
+
+    /**
+     * Register a listener for PCEP msg events[carrying node descriptor details].
+     *
+     * @param listener the listener to notify
+     */
+    void addNodeListener(PcepNodeListener listener);
+
+    /**
+     * Unregister a listener.
+     *
+     * @param listener the listener to be unregistered
+     */
+    void removeNodeListener(PcepNodeListener listener);
+
+    /**
+     * Send a message to a particular pcc client.
+     *
+     * @param pccId the id of the client to send message.
+     * @param msg the message to send
+     */
+    void writeMessage(PccId pccId, PcepMessage msg);
+
+    /**
+     * Process a message and notify the appropriate listeners.
+     *
+     * @param pccId id of the client the message arrived on
+     * @param msg the message to process.
+     */
+    void processClientMessage(PccId pccId, PcepMessage msg);
+
+    /**
+     * Close all connected PCC clients.
+     */
+    void closeConnectedClients();
+
+    /**
+     * Create label stack from the given path.
+     *
+     * @param path from which label stack is to be computed
+     * @return the label stack
+     */
+    public LabelStack computeLabelStack(Path path);
+
+    /**
+     * Allocates and downloads local labels for the given LSP.
+     *
+     * @param tunnel for which local labels have to be assigned and downloaded
+     * @return success or failure
+     */
+    public boolean allocateLocalLabel(Tunnel tunnel);
+
+    /**
+     * Creates label stack for ERO object from network resource.
+     *
+     * @param labelStack label stack
+     * @param path (hop list)
+     * @return list of ERO sub-objects
+     */
+    public LinkedList<PcepValueType> createPcepLabelStack(DefaultLabelStack labelStack, Path path);
+
+    /**
+     * Returns list of PCEP exceptions.
+     *
+     * @return PcepExceptions
+     */
+    public Map<String, List<String>> getPcepExceptions();
+
+    /**
+     * Returns all the pcep error messages received .
+     *
+     * @return PcepErrorMsg
+     */
+    public Map<Integer, Integer> getPcepErrorMsg();
+
+    /**
+     * Returns the pcep session details.
+     *
+     * @return PcepSession
+     */
+    public Map<String, String> getPcepSessionMap();
+
+    /**
+     * Returns the pcep sessionid information.
+     *
+     * @return PcepSessionId
+     */
+    public Map<String, Byte> getPcepSessionIdMap();
+
+    /**
+     * Creates detailed information about pcep error value and type per peer.
+     *
+     * @param peerId id of the peer which sent the error message
+     * @param errorType the error type of the error message received
+     * @param errValue the error value of the error message received
+     */
+    void peerErrorMsg(String peerId, Integer errorType, Integer errValue);
+}