diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/PatchDescription.java b/core/api/src/main/java/org/onosproject/net/behaviour/PatchDescription.java
new file mode 100755
index 0000000..16958fb
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+++ b/core/api/src/main/java/org/onosproject/net/behaviour/PatchDescription.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.net.behaviour;
+
+import org.onosproject.net.Annotated;
+import org.onosproject.net.Description;
+
+import java.util.Optional;
+
+/**
+ * Describes a patch interface.
+ */
+public interface PatchDescription extends Description, Annotated {
+
+    /**
+     * Returns the identifier of the device where this patch interface is.
+     *
+     * @return device identifier; empty value if not set
+     */
+    Optional<String> deviceId();
+
+    /**
+     * Return the name of the patch interface.
+     *
+     * @return patch interface name
+     */
+    String ifaceName();
+
+    /**
+     * Returns the name of the interface for the other side of the patch.
+     *
+     * @return peer patch interface name
+     */
+    String peer();
+
+    /**
+     * Builder of patch interface description entities.
+     */
+    interface Builder {
+
+        /**
+         * Returns new patch interface description.
+         *
+         * @return patch interface description
+         */
+        PatchDescription build();
+
+        /**
+         * Returns new patch interface description.
+         *
+         * @param deviceId device id
+         * @return patch interface description builder
+         */
+        Builder deviceId(String deviceId);
+        /**
+         * Returns patch interface description builder with a given interface name.
+         *
+         * @param ifaceName interface name
+         * @return patch interface description builder
+         */
+        Builder ifaceName(String ifaceName);
+
+        /**
+         * Returns patch interface description builder with a given peer.
+         *
+         * @param peerName peer patch interface name
+         * @return patch interface description builder
+         */
+        Builder peer(String peerName);
+    }
+
+}