diff --git a/rw_core/utils/core_utils.go b/rw_core/utils/core_utils.go
new file mode 100644
index 0000000..1e1ed9f
--- /dev/null
+++ b/rw_core/utils/core_utils.go
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2018-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 utils
+
+type DeviceID struct {
+	Id string
+}
+
+type LogicalDeviceID struct {
+	Id string
+}