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diff --git a/resources/libraries/python/Adl.py b/resources/libraries/python/Adl.py
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+# Copyright (c) 2021 Cisco and/or its affiliates.
+# 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.
+
+"""ADL utilities library."""
+
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
+from resources.libraries.python.topology import Topology
+
+
+class Adl:
+    """ADL utilities."""
+
+    @staticmethod
+    def adl_add_allowlist_entry(
+            node, interface, ip_version, fib_id, default_adl=0):
+        """Add adl allowlisted entry.
+
+        :param node: Node to add ADL allowlist on.
+        :param interface: Interface of the node where the ADL is added.
+        :param ip_version: IP version. 'ip4' and 'ip6' are valid values.
+        :param fib_id: Specify the fib table ID.
+        :param default_adl: 1 => enable non-ip4, non-ip6 filtration,
+            0 => disable it.
+        :type node: dict
+        :type interface: str
+        :type ip_version: str
+        :type fib_id: int
+        :type default_adl: int
+        :raises ValueError: If parameter 'ip_version' has incorrect value.
+        """
+        if ip_version not in (u"ip4", u"ip6"):
+            raise ValueError(u"IP version is not in correct format")
+
+        cmd = u"adl_allowlist_enable_disable"
+        err_msg = f"Failed to add ADL allowlist on interface {interface} " \
+            f"on host {node[u'host']}"
+        args = dict(
+            sw_if_index=Topology.get_interface_sw_index(node, interface),
+            fib_id=int(fib_id),
+            ip4=bool(ip_version == u"ip4"),
+            ip6=bool(ip_version == u"ip6"),
+            default_adl=default_adl
+        )
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def adl_interface_enable_or_disable(node, interface, state):
+        """Enable or disable ADL on the interface.
+
+        :param node: Node to add ADL allowlist on.
+        :param interface: Interface of the node where the ADL is added.
+        :param state: Enable or disable ADL on the interface.
+        :type node: dict
+        :type interface: str
+        :type state: str
+        :raises ValueError: If parameter 'state' has incorrect value.
+        """
+        state = state.lower()
+        if state in (u"enable", u"disable"):
+            enable = bool(state == u"enable")
+        else:
+            raise ValueError(u"Possible state values are 'enable' or 'disable'")
+
+        cmd = u"adl_interface_enable_disable"
+        err_msg = f"Failed to enable/disable ADL on interface {interface} " \
+            f"on host {node[u'host']}"
+        args = dict(
+            sw_if_index=Topology.get_interface_sw_index(node, interface),
+            enable_disable=enable
+        )
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)