diff --git a/configs/pon-interfaces.yaml b/configs/pon-interfaces.yaml
index 809ed0d..9ab6063 100644
--- a/configs/pon-interfaces.yaml
+++ b/configs/pon-interfaces.yaml
@@ -1,4 +1,5 @@
 ---
+
 num_pon_ports: 16
 ranges:
   -
@@ -14,4 +15,23 @@
       end: 1024
     gemport_id_range:
       start: 256
-      end: 1024
\ No newline at end of file
+      end: 1024
+
+# -----------------------------------------------------------------------
+# Copyright 2022-2024 Open Networking Foundation Contributors
+#
+# 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.
+# -----------------------------------------------------------------------
+# SPDX-FileCopyrightText: 2022-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------