diff --git a/configs/att-services.yaml b/configs/att-services.yaml
index c9116e2..fff1083 100644
--- a/configs/att-services.yaml
+++ b/configs/att-services.yaml
@@ -1,13 +1,35 @@
-# Contains a description of the services that needs to be created for each UNI and the corresponding tagging scheme
+---
+
+# Contains a description of the services that needs to be created for each
+# UNI and the corresponding tagging scheme
 
 # ATT
 workflow: att
 services:
-- name: hsia
-  c_tag: 900
-  c_tag_allocation: unique
-  s_tag: 900
-  s_tag_allocation: shared
-  needs_eapol: true
-  needs_dhcp: true
-  tp_id: 64
+  - name: hsia
+    c_tag: 900
+    c_tag_allocation: unique
+    s_tag: 900
+    s_tag_allocation: shared
+    needs_eapol: true
+    needs_dhcp: true
+    tp_id: 64
+
+# -----------------------------------------------------------------------
+# Copyright 2020-2024 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: 2020-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
diff --git a/configs/bbsim.yaml b/configs/bbsim.yaml
index 87cf625..6fa45cd 100644
--- a/configs/bbsim.yaml
+++ b/configs/bbsim.yaml
@@ -42,7 +42,7 @@
   reboot_delay: 10      # reboot delay in seconds
   # firmware_version: ""
   # device_id: 0a:0a:0a:0a:0a:<id>
-  port_stats_interval: 20 # in seconds
+  port_stats_interval: 20  # in seconds
   # omci_response_rate: 10
 
 # BBR settings
diff --git a/configs/dt-fttb-services.yaml b/configs/dt-fttb-services.yaml
index 6ade030..ab67d38 100644
--- a/configs/dt-fttb-services.yaml
+++ b/configs/dt-fttb-services.yaml
@@ -1,35 +1,57 @@
-# Contains a description of the services that needs to be created for each UNI and the corresponding tagging scheme
+---
 
+# Contains a description of the services that needs to be
+# created for each UNI and the corresponding tagging scheme
+#
 # The service names used in this file are mandatory
 # for FTTB to work correctly.
 # DPU_MGMT_TRAFFIC is used in bbsim to detect when the sTag
 # must be used for DHCP packets instead of the cTag, and the
 # Olt app has custom behavior that is triggered by each of
 # these names.
-
+#
 # DT FTTB
 workflow: dt-fttb
-  services:
-    - name: FTTB_SUBSCRIBER_TRAFFIC
-      c_tag: 101
-      c_tag_allocation: unique
-      s_tag: 3101
-      s_tag_allocation: unique
-      tp_id: 64
-    - name: DPU_ANCP_TRAFFIC
-      c_tag: 4
-      c_tag_allocation: shared
-      s_tag: 40
-      s_tag_allocation: shared
-      us_pon_s_tag_priority: 7
-      tp_id: 64
-    - name: DPU_MGMT_TRAFFIC
-      c_tag: 6
-      c_tag_allocation: shared
-      s_tag: 60
-      s_tag_allocation: shared
-      us_pon_c_tag_priority: 3
-      us_pon_s_tag_priority: 7
-      tp_id: 64
-      enable_mac_learning: true
-      needs_dhcp: true
\ No newline at end of file
+services:
+  - name: FTTB_SUBSCRIBER_TRAFFIC
+    c_tag: 101
+    c_tag_allocation: unique
+    s_tag: 3101
+    s_tag_allocation: unique
+    tp_id: 64
+  - name: DPU_ANCP_TRAFFIC
+    c_tag: 4
+    c_tag_allocation: shared
+    s_tag: 40
+    s_tag_allocation: shared
+    us_pon_s_tag_priority: 7
+    tp_id: 64
+  - name: DPU_MGMT_TRAFFIC
+    c_tag: 6
+    c_tag_allocation: shared
+    s_tag: 60
+    s_tag_allocation: shared
+    us_pon_c_tag_priority: 3
+    us_pon_s_tag_priority: 7
+    tp_id: 64
+    enable_mac_learning: true
+    needs_dhcp: true
+
+# -----------------------------------------------------------------------
+# 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
+# -----------------------------------------------------------------------
diff --git a/configs/dt-services.yaml b/configs/dt-services.yaml
index 3c3bcce..d064769 100644
--- a/configs/dt-services.yaml
+++ b/configs/dt-services.yaml
@@ -1,12 +1,34 @@
-# Contains a description of the services that needs to be created for each UNI and the corresponding tagging scheme
+---
+
+# Contains a description of the services that needs to be created for each
+# UNI and the corresponding tagging scheme
 
 # DT
 workflow: dt
 services:
-- name: hsia
-  uni_tag_match: 4096
-  c_tag: 4096
-  c_tag_allocation: shared
-  s_tag: 900
-  s_tag_allocation: unique
-  tp_id: 64
\ No newline at end of file
+  - name: hsia
+    uni_tag_match: 4096
+    c_tag: 4096
+    c_tag_allocation: shared
+    s_tag: 900
+    s_tag_allocation: unique
+    tp_id: 64
+
+# -----------------------------------------------------------------------
+# Copyright 2020-2024 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: 2020-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
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
+# -----------------------------------------------------------------------
diff --git a/configs/tt-services.yaml b/configs/tt-services.yaml
index 78966b8..76bb60f 100644
--- a/configs/tt-services.yaml
+++ b/configs/tt-services.yaml
@@ -1,49 +1,72 @@
-# Contains a description of the services that needs to be created for each UNI and the corresponding tagging scheme
+---
+
+# Contains a description of the services that needs to be created for each
+# UNI and the corresponding tagging scheme
 
 # TT
 workflow: tt
 services:
-- name: hsia
-  uni_tag_match: 35
-  c_tag: 900
-  c_tag_allocation: unique
-  s_tag: 900
-  s_tag_allocation: shared
-  tp_id: 64
-- name: voip
-  uni_tag_match: 65
-  c_tag: 444
-  c_tag_allocation: shared
-  s_tag: 333
-  s_tag_allocation: shared
-  needs_dhcp: true
-  tp_id: 65
-  configure_mac_address: true
-  us_pon_c_tag_priority: 7
-  us_pon_s_tag_priority: 7
-  ds_pon_c_tag_priority: 7
-  ds_pon_s_tag_priority: 7
-- name: vod
-  uni_tag_match: 55
-  c_tag: 55
-  c_tag_allocation: shared
-  s_tag: 555
-  s_tag_allocation: shared
-  needs_dhcp: true
-  needs_igmp: true
-  tp_id: 66
-  configure_mac_address: true
-  us_pon_c_tag_priority: 5
-  us_pon_s_tag_priority: 5
-  ds_pon_c_tag_priority: 5
-  ds_pon_s_tag_priority: 5
-# NOTE: the multicast service must be called MC unless you set multicastServiceName to something else in org.opencord.olt.impl.Olt
-- name: MC
-  c_tag: 55
-  c_tag_allocation: shared
-  s_tag: 550
-  s_tag_allocation: shared
-  tp_id: 66
-  ds_pon_c_tag_priority: 5
-  ds_pon_s_tag_priority: 5
-# TODO add mgmt service (same tagging scheme as void/vod), requires DHCP
\ No newline at end of file
+  - name: hsia
+    uni_tag_match: 35
+    c_tag: 900
+    c_tag_allocation: unique
+    s_tag: 900
+    s_tag_allocation: shared
+    tp_id: 64
+  - name: voip
+    uni_tag_match: 65
+    c_tag: 444
+    c_tag_allocation: shared
+    s_tag: 333
+    s_tag_allocation: shared
+    needs_dhcp: true
+    tp_id: 65
+    configure_mac_address: true
+    us_pon_c_tag_priority: 7
+    us_pon_s_tag_priority: 7
+    ds_pon_c_tag_priority: 7
+    ds_pon_s_tag_priority: 7
+  - name: vod
+    uni_tag_match: 55
+    c_tag: 55
+    c_tag_allocation: shared
+    s_tag: 555
+    s_tag_allocation: shared
+    needs_dhcp: true
+    needs_igmp: true
+    tp_id: 66
+    configure_mac_address: true
+    us_pon_c_tag_priority: 5
+    us_pon_s_tag_priority: 5
+    ds_pon_c_tag_priority: 5
+    ds_pon_s_tag_priority: 5
+    # NOTE: the multicast service must be called MC unless you set
+    # multicastServiceName to something else in org.opencord.olt.impl.Olt
+  - name: MC
+    c_tag: 55
+    c_tag_allocation: shared
+    s_tag: 550
+    s_tag_allocation: shared
+    tp_id: 66
+    ds_pon_c_tag_priority: 5
+    ds_pon_s_tag_priority: 5
+    # TODO add mgmt service (same tagging scheme as void/vod), requires DHCP
+
+# -----------------------------------------------------------------------
+# Copyright 2020-2024 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: 2020-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------