diff --git a/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisLspBin.java b/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisLspBin.java
new file mode 100644
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+++ b/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisLspBin.java
@@ -0,0 +1,47 @@
+/*
+ * 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.isis.controller;
+
+import java.util.Map;
+
+/**
+ * Representation of an ISIS LSP bin which is part of LSP aging process.
+ */
+public interface IsisLspBin {
+
+    /**
+     * Returns all the LSPs in the bin.
+     *
+     * @return all LSPs in the bin
+     */
+    Map<String, LspWrapper> listOfLsp();
+
+    /**
+     * Adds LSP to bin for aging.
+     *
+     * @param lspKey     key to add the LSP
+     * @param lspWrapper LSP wrapper instance
+     */
+    void addIsisLsp(String lspKey, LspWrapper lspWrapper);
+
+    /**
+     * Removes LSP from bin.
+     *
+     * @param lspKey     LSP key
+     * @param lspWrapper LSP wrapper instance
+     */
+    void removeIsisLsp(String lspKey, LspWrapper lspWrapper);
+}