fix(IPsec): fix policy tests
[csit.git] / resources / libraries / python / IPsecUtil.py
index 6cbd48f..e3b3c88 100644 (file)
@@ -1,4 +1,5 @@
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
+# Copyright (c) 2022 PANTHEON.tech s.r.o.
 # 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:
 
 """IPsec utilities library."""
 
-from ipaddress import ip_network
+import os
 
-from enum import Enum
+from enum import Enum, IntEnum
+from io import open
+from ipaddress import ip_network, ip_address
+from random import choice
+from string import ascii_letters
 
+from resources.libraries.python.Constants import Constants
+from resources.libraries.python.IncrementUtil import ObjIncrement
+from resources.libraries.python.InterfaceUtil import InterfaceUtil, \
+    InterfaceStatusFlags
+from resources.libraries.python.IPAddress import IPAddress
+from resources.libraries.python.IPUtil import IPUtil, IpDscp, \
+    MPLS_LABEL_INVALID, NetworkIncrement
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
+from resources.libraries.python.ssh import scp_node
+from resources.libraries.python.topology import Topology, NodeType
 from resources.libraries.python.VatExecutor import VatExecutor
-from resources.libraries.python.topology import Topology
-from resources.libraries.python.VatJsonUtil import VatJsonUtil
+from resources.libraries.python.VPPUtil import VPPUtil
+
+
+IPSEC_UDP_PORT_NONE = 0xffff
+
+
+def gen_key(length):
+    """Generate random string as a key.
+
+    :param length: Length of generated payload.
+    :type length: int
+    :returns: The generated payload.
+    :rtype: bytes
+    """
+    return u"".join(
+        choice(ascii_letters) for _ in range(length)
+    ).encode(encoding=u"utf-8")
 
 
-# pylint: disable=too-few-public-methods
 class PolicyAction(Enum):
     """Policy actions."""
-    BYPASS = 'bypass'
-    DISCARD = 'discard'
-    PROTECT = 'protect'
+    BYPASS = (u"bypass", 0)
+    DISCARD = (u"discard", 1)
+    PROTECT = (u"protect", 3)
 
-    def __init__(self, string):
-        self.string = string
+    def __init__(self, policy_name, policy_int_repr):
+        self.policy_name = policy_name
+        self.policy_int_repr = policy_int_repr
+
+    def __str__(self):
+        return self.policy_name
+
+    def __int__(self):
+        return self.policy_int_repr
 
 
 class CryptoAlg(Enum):
     """Encryption algorithms."""
-    AES_CBC_128 = ('aes-cbc-128', 'AES-CBC', 16)
-    AES_CBC_192 = ('aes-cbc-192', 'AES-CBC', 24)
-    AES_CBC_256 = ('aes-cbc-256', 'AES-CBC', 32)
+    AES_CBC_128 = (u"aes-cbc-128", 1, u"AES-CBC", 16)
+    AES_CBC_256 = (u"aes-cbc-256", 3, u"AES-CBC", 32)
+    AES_GCM_128 = (u"aes-gcm-128", 7, u"AES-GCM", 16)
+    AES_GCM_256 = (u"aes-gcm-256", 9, u"AES-GCM", 32)
 
-    def __init__(self, alg_name, scapy_name, key_len):
+    def __init__(self, alg_name, alg_int_repr, scapy_name, key_len):
         self.alg_name = alg_name
+        self.alg_int_repr = alg_int_repr
         self.scapy_name = scapy_name
         self.key_len = key_len
 
 
 class IntegAlg(Enum):
     """Integrity algorithm."""
-    SHA1_96 = ('sha1-96', 'HMAC-SHA1-96', 20)
-    SHA_256_128 = ('sha-256-128', 'SHA2-256-128', 32)
-    SHA_384_192 = ('sha-384-192', 'SHA2-384-192', 48)
-    SHA_512_256 = ('sha-512-256', 'SHA2-512-256', 64)
+    SHA_256_128 = (u"sha-256-128", 4, u"SHA2-256-128", 32)
+    SHA_512_256 = (u"sha-512-256", 6, u"SHA2-512-256", 64)
 
-    def __init__(self, alg_name, scapy_name, key_len):
+    def __init__(self, alg_name, alg_int_repr, scapy_name, key_len):
         self.alg_name = alg_name
+        self.alg_int_repr = alg_int_repr
         self.scapy_name = scapy_name
         self.key_len = key_len
 
 
-class IPsecUtil(object):
-    """IPsec utilities."""
+class IPsecProto(IntEnum):
+    """IPsec protocol."""
+    IPSEC_API_PROTO_ESP = 50
+    IPSEC_API_PROTO_AH = 51
+
 
-    # pylint: disable=too-many-arguments
-    # pylint: disable=too-many-locals
+class IPsecSadFlags(IntEnum):
+    """IPsec Security Association Database flags."""
+    IPSEC_API_SAD_FLAG_NONE = 0
+    # Enable extended sequence numbers
+    IPSEC_API_SAD_FLAG_USE_ESN = 0x01
+    # Enable Anti - replay
+    IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY = 0x02
+    # IPsec tunnel mode if non-zero, else transport mode
+    IPSEC_API_SAD_FLAG_IS_TUNNEL = 0x04
+    # IPsec tunnel mode is IPv6 if non-zero, else IPv4 tunnel
+    # only valid if is_tunnel is non-zero
+    IPSEC_API_SAD_FLAG_IS_TUNNEL_V6 = 0x08
+    # Enable UDP encapsulation for NAT traversal
+    IPSEC_API_SAD_FLAG_UDP_ENCAP = 0x10
+    # IPsec SA is or inbound traffic
+    IPSEC_API_SAD_FLAG_IS_INBOUND = 0x40
+
+
+class TunnelEncpaDecapFlags(IntEnum):
+    """Flags controlling tunnel behaviour."""
+    TUNNEL_API_ENCAP_DECAP_FLAG_NONE = 0
+    # at encap, copy the DF bit of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF = 1
+    # at encap, set the DF bit in the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF = 2
+    # at encap, copy the DSCP bits of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP = 4
+    # at encap, copy the ECN bit of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN = 8
+    # at decap, copy the ECN bit of the tunnel header into the payload
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_ECN = 16
+
+
+class TunnelMode(IntEnum):
+    """Tunnel modes."""
+    # point-to-point
+    TUNNEL_API_MODE_P2P = 0
+    # multi-point
+    TUNNEL_API_MODE_MP = 1
+
+
+class IPsecUtil:
+    """IPsec utilities."""
 
     @staticmethod
     def policy_action_bypass():
         """Return policy action bypass.
 
-        :return: PolicyAction enum BYPASS object.
+        :returns: PolicyAction enum BYPASS object.
         :rtype: PolicyAction
         """
         return PolicyAction.BYPASS
@@ -77,7 +158,7 @@ class IPsecUtil(object):
     def policy_action_discard():
         """Return policy action discard.
 
-        :return: PolicyAction enum DISCARD object.
+        :returns: PolicyAction enum DISCARD object.
         :rtype: PolicyAction
         """
         return PolicyAction.DISCARD
@@ -86,7 +167,7 @@ class IPsecUtil(object):
     def policy_action_protect():
         """Return policy action protect.
 
-        :return: PolicyAction enum PROTECT object.
+        :returns: PolicyAction enum PROTECT object.
         :rtype: PolicyAction
         """
         return PolicyAction.PROTECT
@@ -95,28 +176,37 @@ class IPsecUtil(object):
     def crypto_alg_aes_cbc_128():
         """Return encryption algorithm aes-cbc-128.
 
-        :return: CryptoAlg enum AES_CBC_128 object.
+        :returns: CryptoAlg enum AES_CBC_128 object.
         :rtype: CryptoAlg
         """
         return CryptoAlg.AES_CBC_128
 
     @staticmethod
-    def crypto_alg_aes_cbc_192():
-        """Return encryption algorithm aes-cbc-192.
+    def crypto_alg_aes_cbc_256():
+        """Return encryption algorithm aes-cbc-256.
 
-        :return: CryptoAlg enum AES_CBC_192 objec.
+        :returns: CryptoAlg enum AES_CBC_256 object.
         :rtype: CryptoAlg
         """
-        return CryptoAlg.AES_CBC_192
+        return CryptoAlg.AES_CBC_256
 
     @staticmethod
-    def crypto_alg_aes_cbc_256():
-        """Return encryption algorithm aes-cbc-256.
+    def crypto_alg_aes_gcm_128():
+        """Return encryption algorithm aes-gcm-128.
 
-        :return: CryptoAlg enum AES_CBC_256 object.
+        :returns: CryptoAlg enum AES_GCM_128 object.
         :rtype: CryptoAlg
         """
-        return CryptoAlg.AES_CBC_256
+        return CryptoAlg.AES_GCM_128
+
+    @staticmethod
+    def crypto_alg_aes_gcm_256():
+        """Return encryption algorithm aes-gcm-256.
+
+        :returns: CryptoAlg enum AES_GCM_128 object.
+        :rtype: CryptoAlg
+        """
+        return CryptoAlg.AES_GCM_256
 
     @staticmethod
     def get_crypto_alg_key_len(crypto_alg):
@@ -124,7 +214,7 @@ class IPsecUtil(object):
 
         :param crypto_alg: Encryption algorithm.
         :type crypto_alg: CryptoAlg
-        :return: Key length.
+        :returns: Key length.
         :rtype: int
         """
         return crypto_alg.key_len
@@ -135,43 +225,25 @@ class IPsecUtil(object):
 
         :param crypto_alg: Encryption algorithm.
         :type crypto_alg: CryptoAlg
-        :return: Algorithm scapy name.
+        :returns: Algorithm scapy name.
         :rtype: str
         """
         return crypto_alg.scapy_name
 
-    @staticmethod
-    def integ_alg_sha1_96():
-        """Return integrity algorithm SHA1-96.
-
-        :return: IntegAlg enum SHA1_96 object.
-        :rtype: IntegAlg
-        """
-        return IntegAlg.SHA1_96
-
     @staticmethod
     def integ_alg_sha_256_128():
         """Return integrity algorithm SHA-256-128.
 
-        :return: IntegAlg enum SHA_256_128 object.
+        :returns: IntegAlg enum SHA_256_128 object.
         :rtype: IntegAlg
         """
         return IntegAlg.SHA_256_128
 
-    @staticmethod
-    def integ_alg_sha_384_192():
-        """Return integrity algorithm SHA-384-192.
-
-        :return: IntegAlg enum SHA_384_192 object.
-        :rtype: IntegAlg
-        """
-        return IntegAlg.SHA_384_192
-
     @staticmethod
     def integ_alg_sha_512_256():
         """Return integrity algorithm SHA-512-256.
 
-        :return: IntegAlg enum SHA_512_256 object.
+        :returns: IntegAlg enum SHA_512_256 object.
         :rtype: IntegAlg
         """
         return IntegAlg.SHA_512_256
@@ -180,12 +252,14 @@ class IPsecUtil(object):
     def get_integ_alg_key_len(integ_alg):
         """Return integrity algorithm key length.
 
+        None argument is accepted, returning zero.
+
         :param integ_alg: Integrity algorithm.
-        :type integ_alg: IntegAlg
-        :return: Key length.
+        :type integ_alg: Optional[IntegAlg]
+        :returns: Key length.
         :rtype: int
         """
-        return integ_alg.key_len
+        return 0 if integ_alg is None else integ_alg.key_len
 
     @staticmethod
     def get_integ_alg_scapy_name(integ_alg):
@@ -193,15 +267,128 @@ class IPsecUtil(object):
 
         :param integ_alg: Integrity algorithm.
         :type integ_alg: IntegAlg
-        :return: Algorithm scapy name.
+        :returns: Algorithm scapy name.
         :rtype: str
         """
         return integ_alg.scapy_name
 
     @staticmethod
-    def vpp_ipsec_add_sad_entry(node, sad_id, spi, crypto_alg, crypto_key,
-                                integ_alg, integ_key, tunnel_src=None,
-                                tunnel_dst=None):
+    def ipsec_proto_esp():
+        """Return IPSec protocol ESP.
+
+        :returns: IPsecProto enum ESP object.
+        :rtype: IPsecProto
+        """
+        return int(IPsecProto.IPSEC_API_PROTO_ESP)
+
+    @staticmethod
+    def ipsec_proto_ah():
+        """Return IPSec protocol AH.
+
+        :returns: IPsecProto enum AH object.
+        :rtype: IPsecProto
+        """
+        return int(IPsecProto.IPSEC_API_PROTO_AH)
+
+    @staticmethod
+    def vpp_ipsec_select_backend(node, protocol, index=1):
+        """Select IPsec backend.
+
+        :param node: VPP node to select IPsec backend on.
+        :param protocol: IPsec protocol.
+        :param index: Backend index.
+        :type node: dict
+        :type protocol: IPsecProto
+        :type index: int
+        :raises RuntimeError: If failed to select IPsec backend or if no API
+            reply received.
+        """
+        cmd = u"ipsec_select_backend"
+        err_msg = f"Failed to select IPsec backend on host {node[u'host']}"
+        args = dict(
+            protocol=protocol,
+            index=index
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_set_async_mode(node, async_enable=1):
+        """Set IPsec async mode on|off.
+
+        :param node: VPP node to set IPsec async mode.
+        :param async_enable: Async mode on or off.
+        :type node: dict
+        :type async_enable: int
+        :raises RuntimeError: If failed to set IPsec async mode or if no API
+            reply received.
+        """
+        cmd = u"ipsec_set_async_mode"
+        err_msg = f"Failed to set IPsec async mode on host {node[u'host']}"
+        args = dict(
+            async_enable=async_enable
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_crypto_sw_scheduler_set_worker(
+            node, workers, crypto_enable=False):
+        """Enable or disable crypto on specific vpp worker threads.
+
+        :param node: VPP node to enable or disable crypto for worker threads.
+        :param workers: List of VPP thread numbers.
+        :param crypto_enable: Disable or enable crypto work.
+        :type node: dict
+        :type workers: Iterable[int]
+        :type crypto_enable: bool
+        :raises RuntimeError: If failed to enable or disable crypto for worker
+            thread or if no API reply received.
+        """
+        for worker in workers:
+            cmd = u"crypto_sw_scheduler_set_worker"
+            err_msg = f"Failed to disable/enable crypto for worker thread " \
+                f"on host {node[u'host']}"
+            args = dict(
+                worker_index=worker - 1,
+                crypto_enable=crypto_enable
+            )
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_crypto_sw_scheduler_set_worker_on_all_duts(
+            nodes, workers, crypto_enable=False):
+        """Enable or disable crypto on specific vpp worker threads.
+
+        :param node: VPP node to enable or disable crypto for worker threads.
+        :param workers: List of VPP thread numbers.
+        :param crypto_enable: Disable or enable crypto work.
+        :type node: dict
+        :type workers: Iterable[int]
+        :type crypto_enable: bool
+        :raises RuntimeError: If failed to enable or disable crypto for worker
+            thread or if no API reply received.
+        """
+        for node in nodes.values():
+            if node[u"type"] == NodeType.DUT:
+                thread_data = VPPUtil.vpp_show_threads(node)
+                worker_cnt = len(thread_data) - 1
+                if not worker_cnt:
+                    return None
+                worker_ids = list()
+                for item in thread_data:
+                    if str(item.cpu_id) in workers.split(u","):
+                        worker_ids.append(item.id)
+
+                IPsecUtil.vpp_ipsec_crypto_sw_scheduler_set_worker(
+                    node, workers=worker_ids, crypto_enable=crypto_enable
+                )
+
+    @staticmethod
+    def vpp_ipsec_add_sad_entry(
+            node, sad_id, spi, crypto_alg, crypto_key, integ_alg=None,
+            integ_key=u"", tunnel_src=None, tunnel_dst=None):
         """Create Security Association Database entry on the VPP node.
 
         :param node: VPP node to add SAD entry on.
@@ -220,26 +407,314 @@ class IPsecUtil(object):
         :type spi: int
         :type crypto_alg: CryptoAlg
         :type crypto_key: str
-        :type integ_alg: str
+        :type integ_alg: Optional[IntegAlg]
+        :type integ_key: str
+        :type tunnel_src: str
+        :type tunnel_dst: str
+        """
+        if isinstance(crypto_key, str):
+            crypto_key = crypto_key.encode(encoding=u"utf-8")
+        if isinstance(integ_key, str):
+            integ_key = integ_key.encode(encoding=u"utf-8")
+        ckey = dict(
+            length=len(crypto_key),
+            data=crypto_key
+        )
+        ikey = dict(
+            length=len(integ_key),
+            data=integ_key if integ_key else 0
+        )
+
+        flags = int(IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE)
+        if tunnel_src and tunnel_dst:
+            flags = flags | int(IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_TUNNEL)
+            src_addr = ip_address(tunnel_src)
+            dst_addr = ip_address(tunnel_dst)
+            if src_addr.version == 6:
+                flags = \
+                    flags | int(IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_TUNNEL_V6)
+        else:
+            src_addr = u""
+            dst_addr = u""
+
+        cmd = u"ipsec_sad_entry_add_del_v3"
+        err_msg = f"Failed to add Security Association Database entry " \
+            f"on host {node[u'host']}"
+        sad_entry = dict(
+            sad_id=int(sad_id),
+            spi=int(spi),
+            crypto_algorithm=crypto_alg.alg_int_repr,
+            crypto_key=ckey,
+            integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+            integrity_key=ikey,
+            flags=flags,
+            tunnel=dict(
+                src=str(src_addr),
+                dst=str(dst_addr),
+                table_id=0,
+                encap_decap_flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                dscp=int(IpDscp.IP_API_DSCP_CS0),
+            ),
+            protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+            udp_src_port=4500,  # default value in api
+            udp_dst_port=4500  # default value in api
+        )
+        args = dict(
+            is_add=True,
+            entry=sad_entry
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_add_sad_entries(
+            node, n_entries, sad_id, spi, crypto_alg, crypto_key,
+            integ_alg=None, integ_key=u"", tunnel_src=None, tunnel_dst=None):
+        """Create multiple Security Association Database entries on VPP node.
+
+        :param node: VPP node to add SAD entry on.
+        :param n_entries: Number of SAD entries to be created.
+        :param sad_id: First SAD entry ID. All subsequent SAD entries will have
+            id incremented by 1.
+        :param spi: Security Parameter Index of first SAD entry. All subsequent
+            SAD entries will have spi incremented by 1.
+        :param crypto_alg: The encryption algorithm name.
+        :param crypto_key: The encryption key string.
+        :param integ_alg: The integrity algorithm name.
+        :param integ_key: The integrity key string.
+        :param tunnel_src: Tunnel header source IPv4 or IPv6 address. If not
+            specified ESP transport mode is used.
+        :param tunnel_dst: Tunnel header destination IPv4 or IPv6 address. If
+            not specified ESP transport mode is used.
+        :type node: dict
+        :type n_entries: int
+        :type sad_id: int
+        :type spi: int
+        :type crypto_alg: CryptoAlg
+        :type crypto_key: str
+        :type integ_alg: Optional[IntegAlg]
         :type integ_key: str
         :type tunnel_src: str
         :type tunnel_dst: str
         """
-        ckey = crypto_key.encode('hex')
-        ikey = integ_key.encode('hex')
-        tunnel = ''
-        if tunnel_src is not None and tunnel_dst is not None:
-            tunnel = 'tunnel_src {0} tunnel_dst {1}'.format(tunnel_src,
-                                                            tunnel_dst)
-        out = VatExecutor.cmd_from_template(node,
-                                            "ipsec/ipsec_sad_add_entry.vat",
-                                            sad_id=sad_id, spi=spi,
-                                            calg=crypto_alg.alg_name, ckey=ckey,
-                                            ialg=integ_alg.alg_name, ikey=ikey,
-                                            tunnel=tunnel)
-        VatJsonUtil.verify_vat_retval(
-            out[0],
-            err_msg='Add SAD entry failed on {0}'.format(node['host']))
+        if isinstance(crypto_key, str):
+            crypto_key = crypto_key.encode(encoding=u"utf-8")
+        if isinstance(integ_key, str):
+            integ_key = integ_key.encode(encoding=u"utf-8")
+        if tunnel_src and tunnel_dst:
+            src_addr = ip_address(tunnel_src)
+            dst_addr = ip_address(tunnel_dst)
+        else:
+            src_addr = u""
+            dst_addr = u""
+
+        addr_incr = 1 << (128 - 96) if src_addr.version == 6 \
+            else 1 << (32 - 24)
+
+        if int(n_entries) > 10:
+            tmp_filename = f"/tmp/ipsec_sad_{sad_id}_add_del_entry.script"
+
+            with open(tmp_filename, 'w') as tmp_file:
+                for i in range(n_entries):
+                    integ = f"integ-alg {integ_alg.alg_name} " \
+                        f"integ-key {integ_key.hex()}" \
+                        if integ_alg else u""
+                    tunnel = f"tunnel src {src_addr + i * addr_incr} " \
+                        f"tunnel dst {dst_addr + i * addr_incr}" \
+                        if tunnel_src and tunnel_dst else u""
+                    conf = f"exec ipsec sa add {sad_id + i} esp spi {spi + i} "\
+                        f"crypto-alg {crypto_alg.alg_name} " \
+                        f"crypto-key {crypto_key.hex()} " \
+                        f"{integ} {tunnel}\n"
+                    tmp_file.write(conf)
+            vat = VatExecutor()
+            vat.execute_script(
+                tmp_filename, node, timeout=300, json_out=False,
+                copy_on_execute=True
+            )
+            os.remove(tmp_filename)
+            return
+
+        ckey = dict(
+            length=len(crypto_key),
+            data=crypto_key
+        )
+        ikey = dict(
+            length=len(integ_key),
+            data=integ_key if integ_key else 0
+        )
+
+        flags = int(IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE)
+        if tunnel_src and tunnel_dst:
+            flags = flags | int(IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_TUNNEL)
+            if src_addr.version == 6:
+                flags = flags | int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_TUNNEL_V6
+                )
+
+        cmd = u"ipsec_sad_entry_add_del_v3"
+        err_msg = f"Failed to add Security Association Database entry " \
+            f"on host {node[u'host']}"
+
+        sad_entry = dict(
+            sad_id=int(sad_id),
+            spi=int(spi),
+            crypto_algorithm=crypto_alg.alg_int_repr,
+            crypto_key=ckey,
+            integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+            integrity_key=ikey,
+            flags=flags,
+            tunnel=dict(
+                src=str(src_addr),
+                dst=str(dst_addr),
+                table_id=0,
+                encap_decap_flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                dscp=int(IpDscp.IP_API_DSCP_CS0),
+            ),
+            protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+            udp_src_port=4500,  # default value in api
+            udp_dst_port=4500  # default value in api
+        )
+        args = dict(
+            is_add=True,
+            entry=sad_entry
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            for i in range(n_entries):
+                args[u"entry"][u"sad_id"] = int(sad_id) + i
+                args[u"entry"][u"spi"] = int(spi) + i
+                args[u"entry"][u"tunnel"][u"src"] = (
+                    str(src_addr + i * addr_incr)
+                    if tunnel_src and tunnel_dst else src_addr
+                )
+                args[u"entry"][u"tunnel"][u"dst"] = (
+                    str(dst_addr + i * addr_incr)
+                    if tunnel_src and tunnel_dst else dst_addr
+                )
+                history = bool(not 1 < i < n_entries - 2)
+                papi_exec.add(cmd, history=history, **args)
+            papi_exec.get_replies(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_set_ip_route(
+            node, n_tunnels, tunnel_src, traffic_addr, tunnel_dst, interface,
+            raddr_range, dst_mac=None):
+        """Set IP address and route on interface.
+
+        :param node: VPP node to add config on.
+        :param n_tunnels: Number of tunnels to create.
+        :param tunnel_src: Tunnel header source IPv4 or IPv6 address.
+        :param traffic_addr: Traffic destination IP address to route.
+        :param tunnel_dst: Tunnel header destination IPv4 or IPv6 address.
+        :param interface: Interface key on node 1.
+        :param raddr_range: Mask specifying range of Policy selector Remote IP
+            addresses. Valid values are from 1 to 32 in case of IPv4 and to 128
+            in case of IPv6.
+        :param dst_mac: The MAC address of destination tunnels.
+        :type node: dict
+        :type n_tunnels: int
+        :type tunnel_src: str
+        :type traffic_addr: str
+        :type tunnel_dst: str
+        :type interface: str
+        :type raddr_range: int
+        :type dst_mac: str
+        """
+        tunnel_src = ip_address(tunnel_src)
+        tunnel_dst = ip_address(tunnel_dst)
+        traffic_addr = ip_address(traffic_addr)
+        tunnel_dst_prefix = 128 if tunnel_dst.version == 6 else 32
+        addr_incr = 1 << (128 - raddr_range) if tunnel_src.version == 6 \
+            else 1 << (32 - raddr_range)
+
+        if int(n_tunnels) > 10:
+            tmp_filename = u"/tmp/ipsec_set_ip.script"
+
+            with open(tmp_filename, 'w') as tmp_file:
+                if_name = Topology.get_interface_name(node, interface)
+                for i in range(n_tunnels):
+                    tunnel_dst_addr = tunnel_dst + i * addr_incr
+                    conf = f"exec set interface ip address {if_name} " \
+                        f"{tunnel_src + i * addr_incr}/{raddr_range}\n" \
+                        f"exec ip route add {traffic_addr + i}/" \
+                        f"{tunnel_dst_prefix} " \
+                        f"via {tunnel_dst_addr} {if_name}\n" \
+                        f"exec ip route add {tunnel_dst_addr}/" \
+                        f"{tunnel_dst_prefix} " \
+                        f"via {tunnel_dst_addr} {if_name}\n"
+                    if dst_mac:
+                        conf = f"{conf}exec set ip neighbor {if_name} " \
+                               f"{tunnel_dst + i * addr_incr} {dst_mac}\n"
+                    tmp_file.write(conf)
+
+            VatExecutor().execute_script(
+                tmp_filename, node, timeout=300, json_out=False,
+                copy_on_execute=True
+            )
+            os.remove(tmp_filename)
+            return
+
+        cmd1 = u"sw_interface_add_del_address"
+        args1 = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            is_add=True,
+            del_all=False,
+            prefix=None
+        )
+        cmd2 = u"ip_route_add_del"
+        args2 = dict(
+            is_add=1,
+            is_multipath=0,
+            route=None
+        )
+        cmd3 = u"ip_neighbor_add_del"
+        args3 = dict(
+            is_add=True,
+            neighbor=dict(
+                sw_if_index=Topology.get_interface_sw_index(node, interface),
+                flags=0,
+                mac_address=str(dst_mac),
+                ip_address=None
+            )
+        )
+        err_msg = f"Failed to configure IP addresses, IP routes and " \
+            f"IP neighbor on interface {interface} on host {node[u'host']}" \
+            if dst_mac \
+            else f"Failed to configure IP addresses and IP routes " \
+                 f"on interface {interface} on host {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            for i in range(n_tunnels):
+                tunnel_dst_addr = tunnel_dst + i * addr_incr
+                args1[u"prefix"] = IPUtil.create_prefix_object(
+                    tunnel_src + i * addr_incr, raddr_range
+                )
+                args2[u"route"] = IPUtil.compose_vpp_route_structure(
+                    node, traffic_addr + i,
+                    prefix_len=tunnel_dst_prefix,
+                    interface=interface, gateway=tunnel_dst_addr
+                )
+                history = bool(not 1 < i < n_tunnels - 2)
+                papi_exec.add(cmd1, history=history, **args1).\
+                    add(cmd2, history=history, **args2)
+
+                args2[u"route"] = IPUtil.compose_vpp_route_structure(
+                    node, tunnel_dst_addr,
+                    prefix_len=tunnel_dst_prefix,
+                    interface=interface, gateway=tunnel_dst_addr
+                )
+                papi_exec.add(cmd2, history=history, **args2)
+
+                if dst_mac:
+                    args3[u"neighbor"][u"ip_address"] = ip_address(
+                        tunnel_dst_addr
+                    )
+                    papi_exec.add(cmd3, history=history, **args3)
+            papi_exec.get_replies(err_msg)
 
     @staticmethod
     def vpp_ipsec_add_spd(node, spd_id):
@@ -250,11 +725,15 @@ class IPsecUtil(object):
         :type node: dict
         :type spd_id: int
         """
-        out = VatExecutor.cmd_from_template(node, "ipsec/ipsec_spd_add.vat",
-                                            spd_id=spd_id)
-        VatJsonUtil.verify_vat_retval(
-            out[0],
-            err_msg='Add SPD {0} failed on {1}'.format(spd_id, node['host']))
+        cmd = u"ipsec_spd_add_del"
+        err_msg = f"Failed to add Security Policy Database " \
+            f"on host {node[u'host']}"
+        args = dict(
+            is_add=True,
+            spd_id=int(spd_id)
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
 
     @staticmethod
     def vpp_ipsec_spd_add_if(node, spd_id, interface):
@@ -267,22 +746,141 @@ class IPsecUtil(object):
         :type spd_id: int
         :type interface: str or int
         """
-        if isinstance(interface, basestring):
-            sw_if_index = Topology.get_interface_sw_index(node, interface)
-        else:
-            sw_if_index = interface
-        out = VatExecutor.cmd_from_template(node,
-                                            "ipsec/ipsec_interface_add_spd.vat",
-                                            spd_id=spd_id, sw_if_id=sw_if_index)
-        VatJsonUtil.verify_vat_retval(
-            out[0],
-            err_msg='Add interface {0} to SPD {1} failed on {2}'.format(
-                interface, spd_id, node['host']))
-
-    @staticmethod
-    def vpp_ipsec_spd_add_entry(node, spd_id, priority, action, inbound=True,
-                                sa_id=None, laddr_range=None, raddr_range=None,
-                                proto=None, lport_range=None, rport_range=None):
+        cmd = u"ipsec_interface_add_del_spd"
+        err_msg = f"Failed to add interface {interface} to Security Policy " \
+            f"Database {spd_id} on host {node[u'host']}"
+        args = dict(
+            is_add=True,
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            spd_id=int(spd_id)
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_create_spds_match_nth_entry(
+            node, dir1_interface, dir2_interface, entry_amount,
+            local_addr_range, remote_addr_range, action=PolicyAction.BYPASS,
+            inbound=False, bidirectional=True):
+        """Create one matching SPD entry for inbound or outbound traffic on
+        a DUT for each traffic direction and also create entry_amount - 1
+        non-matching SPD entries. Create a Security Policy Database on each
+        outbound interface where these entries will be configured.
+        The matching SPD entry will have the lowest priority, input action and
+        will be configured to match the IP flow. The non-matching entries will
+        be the same, except with higher priority and non-matching IP flows.
+
+        Action Protect is currently not supported.
+
+        :param node: VPP node to configured the SPDs and their entries.
+        :param dir1_interface: The interface in direction 1 where the entries
+            will be checked.
+        :param dir2_interface: The interface in direction 2 where the entries
+            will be checked.
+        :param entry_amount: The number of SPD entries to configure. If
+            entry_amount == 1, no non-matching entries will be configured.
+        :param local_addr_range: Matching local address range in direction 1
+            in format IP/prefix or IP/mask. If no mask is provided, it's
+            considered to be /32.
+        :param remote_addr_range: Matching remote address range in
+            direction 1 in format IP/prefix or IP/mask. If no mask is
+            provided, it's considered to be /32.
+        :param action: Policy action.
+        :param inbound: If True policy is for inbound traffic, otherwise
+            outbound.
+        :param bidirectional: When True, will create SPDs in both directions
+            of traffic. When False, only in one direction.
+        :type node: dict
+        :type dir1_interface: Union[string, int]
+        :type dir2_interface: Union[string, int]
+        :type entry_amount: int
+        :type local_addr_range:
+            Union[string, ipaddress.IPv4Address, ipaddress.IPv6Address]
+        :type remote_addr_range:
+            Union[string, ipaddress.IPv4Address, ipaddress.IPv6Address]
+        :type action: IPsecUtil.PolicyAction
+        :type inbound: bool
+        :type bidirectional: bool
+        :raises NotImplementedError: When the action is PolicyAction.PROTECT.
+        """
+
+        if action == PolicyAction.PROTECT:
+            raise NotImplementedError('Policy action PROTECT is not supported.')
+
+        spd_id_dir1 = 1
+        spd_id_dir2 = 2
+        matching_priority = 1
+
+        IPsecUtil.vpp_ipsec_add_spd(node, spd_id_dir1)
+        IPsecUtil.vpp_ipsec_spd_add_if(node, spd_id_dir1, dir1_interface)
+        # matching entry direction 1
+        IPsecUtil.vpp_ipsec_add_spd_entry(
+            node, spd_id_dir1, matching_priority, action,
+            inbound=inbound, laddr_range=local_addr_range,
+            raddr_range=remote_addr_range
+        )
+
+        if bidirectional:
+            IPsecUtil.vpp_ipsec_add_spd(node, spd_id_dir2)
+            IPsecUtil.vpp_ipsec_spd_add_if(node, spd_id_dir2, dir2_interface)
+
+            # matching entry direction 2, the address ranges are switched
+            IPsecUtil.vpp_ipsec_add_spd_entry(
+                node, spd_id_dir2, matching_priority, action,
+                inbound=inbound, laddr_range=remote_addr_range,
+                raddr_range=local_addr_range
+            )
+
+        # non-matching entries
+        no_match_entry_amount = entry_amount - 1
+        if no_match_entry_amount > 0:
+            # create a NetworkIncrement representation of the network,
+            # then skip the matching network
+            no_match_local_addr_range = NetworkIncrement(
+                ip_network(local_addr_range)
+            )
+            next(no_match_local_addr_range)
+
+            no_match_remote_addr_range = NetworkIncrement(
+                ip_network(remote_addr_range)
+            )
+            next(no_match_remote_addr_range)
+
+            # non-matching entries direction 1
+            IPsecUtil.vpp_ipsec_add_spd_entries(
+                node, no_match_entry_amount, spd_id_dir1,
+                ObjIncrement(matching_priority + 1, 1), action,
+                inbound=inbound, laddr_range=no_match_local_addr_range,
+                raddr_range=no_match_remote_addr_range
+            )
+
+            if bidirectional:
+                # reset the networks so that we're using a unified config
+                # the address ranges are switched
+                no_match_remote_addr_range = NetworkIncrement(
+                    ip_network(local_addr_range)
+                )
+                next(no_match_remote_addr_range)
+
+                no_match_local_addr_range = NetworkIncrement(
+                    ip_network(remote_addr_range)
+                )
+                next(no_match_local_addr_range)
+                # non-matching entries direction 2
+                IPsecUtil.vpp_ipsec_add_spd_entries(
+                    node, no_match_entry_amount, spd_id_dir2,
+                    ObjIncrement(matching_priority + 1, 1), action,
+                    inbound=inbound, laddr_range=no_match_local_addr_range,
+                    raddr_range=no_match_remote_addr_range
+                )
+
+        IPsecUtil.vpp_ipsec_show_all(node)
+
+    @staticmethod
+    def vpp_ipsec_add_spd_entry(
+            node, spd_id, priority, action, inbound=True, sa_id=None,
+            proto=None, laddr_range=None, raddr_range=None, lport_range=None,
+            rport_range=None, is_ipv6=False):
         """Create Security Policy Database entry on the VPP node.
 
         :param node: VPP node to add SPD entry on.
@@ -291,70 +889,1382 @@ class IPsecUtil(object):
         :param action: Policy action.
         :param inbound: If True policy is for inbound traffic, otherwise
             outbound.
-        :param sa_id: SAD entry ID for protect action.
-        :param laddr_range: Policy selector local IPv4 or IPv6 address range in
-            format IP/prefix or IP/mask. If no mask is provided, it's considered
-            to be /32.
-        :param raddr_range: Policy selector remote IPv4 or IPv6 address range in
-            format IP/prefix or IP/mask. If no mask is provided, it's considered
-            to be /32.
+        :param sa_id: SAD entry ID for action PolicyAction.PROTECT.
         :param proto: Policy selector next layer protocol number.
+        :param laddr_range: Policy selector local IPv4 or IPv6 address range
+            in format IP/prefix or IP/mask. If no mask is provided,
+            it's considered to be /32.
+        :param raddr_range: Policy selector remote IPv4 or IPv6 address range
+            in format IP/prefix or IP/mask. If no mask is provided,
+            it's considered to be /32.
         :param lport_range: Policy selector local TCP/UDP port range in format
             <port_start>-<port_end>.
         :param rport_range: Policy selector remote TCP/UDP port range in format
             <port_start>-<port_end>.
+        :param is_ipv6: True in case of IPv6 policy when IPv6 address range is
+            not defined so it will default to address ::/0, otherwise False.
         :type node: dict
         :type spd_id: int
         :type priority: int
-        :type action: PolicyAction
+        :type action: IPsecUtil.PolicyAction
         :type inbound: bool
         :type sa_id: int
+        :type proto: int
         :type laddr_range: string
         :type raddr_range: string
+        :type lport_range: string
+        :type rport_range: string
+        :type is_ipv6: bool
+        """
+        if laddr_range is None:
+            laddr_range = u"::/0" if is_ipv6 else u"0.0.0.0/0"
+
+        if raddr_range is None:
+            raddr_range = u"::/0" if is_ipv6 else u"0.0.0.0/0"
+
+        local_net = ip_network(laddr_range, strict=False)
+        remote_net = ip_network(raddr_range, strict=False)
+
+        cmd = u"ipsec_spd_entry_add_del"
+        err_msg = f"Failed to add entry to Security Policy Database " \
+                  f"{spd_id} on host {node[u'host']}"
+
+        spd_entry = dict(
+            spd_id=int(spd_id),
+            priority=int(priority),
+            is_outbound=not inbound,
+            sa_id=int(sa_id) if sa_id else 0,
+            policy=int(action),
+            protocol=int(proto) if proto else 0,
+            remote_address_start=IPAddress.create_ip_address_object(
+                remote_net.network_address
+            ),
+            remote_address_stop=IPAddress.create_ip_address_object(
+                remote_net.broadcast_address
+            ),
+            local_address_start=IPAddress.create_ip_address_object(
+                local_net.network_address
+            ),
+            local_address_stop=IPAddress.create_ip_address_object(
+                local_net.broadcast_address
+            ),
+            remote_port_start=int(rport_range.split(u"-")[0]) if rport_range
+            else 0,
+            remote_port_stop=int(rport_range.split(u"-")[1]) if rport_range
+            else 65535,
+            local_port_start=int(lport_range.split(u"-")[0]) if lport_range
+            else 0,
+            local_port_stop=int(lport_range.split(u"-")[1]) if rport_range
+            else 65535
+        )
+        args = dict(
+            is_add=True,
+            entry=spd_entry
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_add_spd_entries(
+            node, n_entries, spd_id, priority, action, inbound, sa_id=None,
+            proto=None, laddr_range=None, raddr_range=None, lport_range=None,
+            rport_range=None, is_ipv6=False):
+        """Create multiple Security Policy Database entries on the VPP node.
+
+        :param node: VPP node to add SPD entries on.
+        :param n_entries: Number of SPD entries to be added.
+        :param spd_id: SPD ID to add entries on.
+        :param priority: SPD entries priority, higher number = higher priority.
+        :param action: Policy action.
+        :param inbound: If True policy is for inbound traffic, otherwise
+            outbound.
+        :param sa_id: SAD entry ID for action PolicyAction.PROTECT.
+        :param proto: Policy selector next layer protocol number.
+        :param laddr_range: Policy selector local IPv4 or IPv6 address range
+            in format IP/prefix or IP/mask. If no mask is provided,
+            it's considered to be /32.
+        :param raddr_range: Policy selector remote IPv4 or IPv6 address range
+            in format IP/prefix or IP/mask. If no mask is provided,
+            it's considered to be /32.
+        :param lport_range: Policy selector local TCP/UDP port range in format
+            <port_start>-<port_end>.
+        :param rport_range: Policy selector remote TCP/UDP port range in format
+            <port_start>-<port_end>.
+        :param is_ipv6: True in case of IPv6 policy when IPv6 address range is
+            not defined so it will default to address ::/0, otherwise False.
+        :type node: dict
+        :type n_entries: int
+        :type spd_id: int
+        :type priority: IPsecUtil.ObjIncrement
+        :type action: IPsecUtil.PolicyAction
+        :type inbound: bool
+        :type sa_id: IPsecUtil.ObjIncrement
         :type proto: int
+        :type laddr_range: IPsecUtil.NetworkIncrement
+        :type raddr_range: IPsecUtil.NetworkIncrement
         :type lport_range: string
         :type rport_range: string
+        :type is_ipv6: bool
         """
-        direction = 'inbound' if inbound else 'outbound'
-
-        act_str = action.value
-        if PolicyAction.PROTECT == action and sa_id is not None:
-            act_str += 'sa_id {0}'.format(sa_id)
-
-        selector = ''
-        if laddr_range is not None:
-            net = ip_network(unicode(laddr_range), strict=False)
-            selector += 'laddr_start {0} laddr_stop {1} '.format(
-                net.network_address, net.broadcast_address)
-        if raddr_range is not None:
-            net = ip_network(unicode(raddr_range), strict=False)
-            selector += 'raddr_start {0} raddr_stop {1} '.format(
-                net.network_address, net.broadcast_address)
-        if proto is not None:
-            selector += 'protocol {0} '.format(proto)
-        if lport_range is not None:
-            selector += 'lport_start {p[0]} lport_stop {p[1]} '.format(
-                p=lport_range.split('-'))
-        if rport_range is not None:
-            selector += 'rport_start {p[0]} rport_stop {p[1]} '.format(
-                p=rport_range.split('-'))
-
-        out = VatExecutor.cmd_from_template(node,
-                                            "ipsec/ipsec_spd_add_entry.vat",
-                                            spd_id=spd_id, priority=priority,
-                                            action=act_str, direction=direction,
-                                            selector=selector)
-        VatJsonUtil.verify_vat_retval(
-            out[0],
-            err_msg='Add entry to SPD {0} failed on {1}'.format(spd_id,
-                                                                node['host']))
-
-    @staticmethod
-    def vpp_ipsec_show(node):
-        """Run "show ipsec" debug CLI command.
+        if laddr_range is None:
+            laddr_range = u"::/0" if is_ipv6 else u"0.0.0.0/0"
+            laddr_range = NetworkIncrement(ip_network(laddr_range), 0)
+
+        if raddr_range is None:
+            raddr_range = u"::/0" if is_ipv6 else u"0.0.0.0/0"
+            raddr_range = NetworkIncrement(ip_network(raddr_range), 0)
+
+        lport_range_start = 0
+        lport_range_stop = 65535
+        if lport_range:
+            lport_range_start, lport_range_stop = lport_range.split('-')
+
+        rport_range_start = 0
+        rport_range_stop = 65535
+        if rport_range:
+            rport_range_start, rport_range_stop = rport_range.split('-')
+
+        if int(n_entries) > 10:
+            tmp_filename = f"/tmp/ipsec_spd_{spd_id}_add_del_entry.script"
+
+            with open(tmp_filename, 'w') as tmp_file:
+                for _ in range(n_entries):
+                    direction = u'inbound' if inbound else u'outbound'
+                    sa = f' sa {sa_id.inc_fmt()}' if sa_id is not None else ''
+                    protocol = f' protocol {protocol}' if proto else ''
+                    local_port_range = f' local-port-range ' \
+                        f'{lport_range_start} - {lport_range_stop}' \
+                        if lport_range else ''
+                    remote_port_range = f' remote-port-range ' \
+                        f'{rport_range_start} - {rport_range_stop}' \
+                        if rport_range else ''
+
+                    spd_cfg = f"exec ipsec policy add spd {spd_id} " \
+                        f"priority {priority.inc_fmt()} {direction}" \
+                        f"{protocol} action {action}{sa} " \
+                        f"local-ip-range {laddr_range.inc_fmt()} " \
+                        f"remote-ip-range {raddr_range.inc_fmt()}" \
+                        f"{local_port_range}{remote_port_range}\n"
+
+                    tmp_file.write(spd_cfg)
+
+            VatExecutor().execute_script(
+                tmp_filename, node, timeout=300, json_out=False,
+                copy_on_execute=True
+            )
+            os.remove(tmp_filename)
+            return
+
+        for _ in range(n_entries):
+            IPsecUtil.vpp_ipsec_add_spd_entry(
+                node, spd_id, next(priority), action, inbound,
+                next(sa_id) if sa_id is not None else sa_id,
+                proto, next(laddr_range), next(raddr_range), lport_range,
+                rport_range, is_ipv6
+            )
+
+    @staticmethod
+    def _ipsec_create_tunnel_interfaces_dut1_vat(
+            nodes, tun_ips, if1_key, if2_key, n_tunnels, crypto_alg, integ_alg,
+            raddr_ip2, addr_incr, spi_d, existing_tunnels=0):
+        """Create multiple IPsec tunnel interfaces on DUT1 node using VAT.
+
+        Generate random keys and return them (so DUT2 or TG can decrypt).
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_ips: Dictionary with VPP node 1 ipsec tunnel interface
+            IPv4/IPv6 address (ip1) and VPP node 2 ipsec tunnel interface
+            IPv4/IPv6 address (ip2).
+        :param if1_key: VPP node 1 interface key from topology file.
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :param n_tunnels: Number of tunnel interfaces to be there at the end.
+        :param crypto_alg: The encryption algorithm name.
+        :param integ_alg: The integrity algorithm name.
+        :param raddr_ip2: Policy selector remote IPv4/IPv6 start address for the
+            first tunnel in direction node2->node1.
+        :param spi_d: Dictionary with SPIs for VPP node 1 and VPP node 2.
+        :param addr_incr: IP / IPv6 address incremental step.
+        :param existing_tunnels: Number of tunnel interfaces before creation.
+            Useful mainly for reconf tests. Default 0.
+        :type nodes: dict
+        :type tun_ips: dict
+        :type if1_key: str
+        :type if2_key: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type integ_alg: Optional[IntegAlg]
+        :type raddr_ip2: IPv4Address or IPv6Address
+        :type addr_incr: int
+        :type spi_d: dict
+        :type existing_tunnels: int
+        :returns: Generated ckeys and ikeys.
+        :rtype: List[bytes], List[bytes]
+        """
+        tmp_fn1 = u"/tmp/ipsec_create_tunnel_dut1.config"
+        if1_n = Topology.get_interface_name(nodes[u"DUT1"], if1_key)
+
+        ckeys = [bytes()] * existing_tunnels
+        ikeys = [bytes()] * existing_tunnels
+
+        vat = VatExecutor()
+        with open(tmp_fn1, u"w") as tmp_f1:
+            rmac = Topology.get_interface_mac(nodes[u"DUT2"], if2_key) \
+                if u"DUT2" in nodes.keys() \
+                else Topology.get_interface_mac(nodes[u"TG"], if2_key)
+            if not existing_tunnels:
+                tmp_f1.write(
+                    f"exec create loopback interface\n"
+                    f"exec set interface state loop0 up\n"
+                    f"exec set interface ip address {if1_n} "
+                    f"{tun_ips[u'ip2'] - 1}/"
+                    f"{len(tun_ips[u'ip2'].packed)*8*3//4}\n"
+                    f"exec set ip neighbor {if1_n} {tun_ips[u'ip2']} {rmac} "
+                    f"static\n"
+                )
+            for i in range(existing_tunnels, n_tunnels):
+                ckeys.append(
+                    gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg))
+                )
+                ikeys.append(
+                    gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
+                )
+                if integ_alg:
+                    integ = f"integ-alg {integ_alg.alg_name} " \
+                        f"integ-key {ikeys[i].hex()} "
+                else:
+                    integ = u""
+                tmp_f1.write(
+                    f"exec set interface ip address loop0 "
+                    f"{tun_ips[u'ip1'] + i * addr_incr}/32\n"
+                    f"exec create ipip tunnel "
+                    f"src {tun_ips[u'ip1'] + i * addr_incr} "
+                    f"dst {tun_ips[u'ip2']} "
+                    f"p2p\n"
+                    f"exec ipsec sa add {i} "
+                    f"spi {spi_d[u'spi_1'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec sa add {100000 + i} "
+                    f"spi {spi_d[u'spi_2'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec tunnel protect ipip{i} "
+                    f"sa-out {i} "
+                    f"sa-in {100000 + i} "
+                    f"add\n"
+                )
+        vat.execute_script(
+            tmp_fn1, nodes[u"DUT1"], timeout=1800, json_out=False,
+            copy_on_execute=True,
+            history=bool(n_tunnels < 100)
+        )
+        os.remove(tmp_fn1)
+
+        with open(tmp_fn1, 'w') as tmp_f1:
+            for i in range(existing_tunnels, n_tunnels):
+                tmp_f1.write(
+                    f"exec set interface unnumbered ipip{i} use {if1_n}\n"
+                    f"exec set interface state ipip{i} up\n"
+                    f"exec ip route add "
+                    f"{raddr_ip2 + i}/{len(raddr_ip2.packed)*8} "
+                    f"via ipip{i}\n"
+                )
+        vat.execute_script(
+            tmp_fn1, nodes[u"DUT1"], timeout=1800, json_out=False,
+            copy_on_execute=True,
+            history=bool(n_tunnels < 100)
+        )
+        os.remove(tmp_fn1)
+
+        return ckeys, ikeys
+
+    @staticmethod
+    def _ipsec_create_tunnel_interfaces_dut2_vat(
+            nodes, tun_ips, if2_key, n_tunnels, crypto_alg, ckeys, integ_alg,
+            ikeys, raddr_ip1, addr_incr, spi_d, existing_tunnels=0):
+        """Create multiple IPsec tunnel interfaces on DUT2 node using VAT.
+
+        This method accesses keys generated by DUT1 method
+        and does not return anything.
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_ips: Dictionary with VPP node 1 ipsec tunnel interface
+            IPv4/IPv6 address (ip1) and VPP node 2 ipsec tunnel interface
+            IPv4/IPv6 address (ip2).
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :param n_tunnels: Number of tunnel interfaces to be there at the end.
+        :param crypto_alg: The encryption algorithm name.
+        :param ckeys: List of encryption keys.
+        :param integ_alg: The integrity algorithm name.
+        :param ikeys: List of integrity keys.
+        :param spi_d: Dictionary with SPIs for VPP node 1 and VPP node 2.
+        :param addr_incr: IP / IPv6 address incremental step.
+        :param existing_tunnels: Number of tunnel interfaces before creation.
+            Useful mainly for reconf tests. Default 0.
+        :type nodes: dict
+        :type tun_ips: dict
+        :type if2_key: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type ckeys: Sequence[bytes]
+        :type integ_alg: Optional[IntegAlg]
+        :type ikeys: Sequence[bytes]
+        :type addr_incr: int
+        :type spi_d: dict
+        :type existing_tunnels: int
+        """
+        tmp_fn2 = u"/tmp/ipsec_create_tunnel_dut2.config"
+        if2_n = Topology.get_interface_name(nodes[u"DUT2"], if2_key)
+
+        vat = VatExecutor()
+        with open(tmp_fn2, 'w') as tmp_f2:
+            if not existing_tunnels:
+                tmp_f2.write(
+                    f"exec set interface ip address {if2_n}"
+                    f" {tun_ips[u'ip2']}/{len(tun_ips[u'ip2'].packed)*8*3/4}\n"
+                )
+            for i in range(existing_tunnels, n_tunnels):
+                if integ_alg:
+                    integ = f"integ-alg {integ_alg.alg_name} " \
+                        f"integ-key {ikeys[i].hex()} "
+                else:
+                    integ = u""
+                tmp_f2.write(
+                    f"exec create ipip tunnel "
+                    f"src {tun_ips[u'ip2']} "
+                    f"dst {tun_ips[u'ip1'] + i * addr_incr} "
+                    f"p2p\n"
+                    f"exec ipsec sa add {100000 + i} "
+                    f"spi {spi_d[u'spi_2'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec sa add {i} "
+                    f"spi {spi_d[u'spi_1'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec tunnel protect ipip{i} "
+                    f"sa-out {100000 + i} "
+                    f"sa-in {i} "
+                    f"add\n"
+                )
+        vat.execute_script(
+            tmp_fn2, nodes[u"DUT2"], timeout=1800, json_out=False,
+            copy_on_execute=True,
+            history=bool(n_tunnels < 100)
+        )
+        os.remove(tmp_fn2)
+
+        with open(tmp_fn2, 'w') as tmp_f2:
+            if not existing_tunnels:
+                tmp_f2.write(
+                    f"exec ip route add {tun_ips[u'ip1']}/8 "
+                    f"via {tun_ips[u'ip2'] - 1} {if2_n}\n"
+                )
+            for i in range(existing_tunnels, n_tunnels):
+                tmp_f2.write(
+                    f"exec set interface unnumbered ipip{i} use {if2_n}\n"
+                    f"exec set interface state ipip{i} up\n"
+                    f"exec ip route add "
+                    f"{raddr_ip1 + i}/{len(raddr_ip1.packed)*8} "
+                    f"via ipip{i}\n"
+                )
+        vat.execute_script(
+            tmp_fn2, nodes[u"DUT2"], timeout=1800, json_out=False,
+            copy_on_execute=True,
+            history=bool(n_tunnels < 100)
+        )
+        os.remove(tmp_fn2)
+
+    @staticmethod
+    def _ipsec_create_loopback_dut1_papi(nodes, tun_ips, if1_key, if2_key):
+        """Create loopback interface and set IP address on VPP node 1 interface
+        using PAPI.
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_ips: Dictionary with VPP node 1 ipsec tunnel interface
+            IPv4/IPv6 address (ip1) and VPP node 2 ipsec tunnel interface
+            IPv4/IPv6 address (ip2).
+        :param if1_key: VPP node 1 interface key from topology file.
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :type nodes: dict
+        :type tun_ips: dict
+        :type if1_key: str
+        :type if2_key: str
+        """
+        with PapiSocketExecutor(nodes[u"DUT1"]) as papi_exec:
+            # Create loopback interface on DUT1, set it to up state
+            cmd = u"create_loopback_instance"
+            args = dict(
+                mac_address=0,
+                is_specified=False,
+                user_instance=0,
+            )
+            err_msg = f"Failed to create loopback interface " \
+                f"on host {nodes[u'DUT1'][u'host']}"
+            loop_sw_if_idx = papi_exec.add(cmd, **args). \
+                get_sw_if_index(err_msg)
+            cmd = u"sw_interface_set_flags"
+            args = dict(
+                sw_if_index=loop_sw_if_idx,
+                flags=InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
+            )
+            err_msg = f"Failed to set loopback interface state up " \
+                f"on host {nodes[u'DUT1'][u'host']}"
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+            # Set IP address on VPP node 1 interface
+            cmd = u"sw_interface_add_del_address"
+            args = dict(
+                sw_if_index=InterfaceUtil.get_interface_index(
+                    nodes[u"DUT1"], if1_key
+                ),
+                is_add=True,
+                del_all=False,
+                prefix=IPUtil.create_prefix_object(
+                    tun_ips[u"ip2"] - 1, 96 if tun_ips[u"ip2"].version == 6
+                    else 24
+                )
+            )
+            err_msg = f"Failed to set IP address on interface {if1_key} " \
+                f"on host {nodes[u'DUT1'][u'host']}"
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+            cmd2 = u"ip_neighbor_add_del"
+            args2 = dict(
+                is_add=1,
+                neighbor=dict(
+                    sw_if_index=Topology.get_interface_sw_index(
+                        nodes[u"DUT1"], if1_key
+                    ),
+                    flags=1,
+                    mac_address=str(
+                        Topology.get_interface_mac(nodes[u"DUT2"], if2_key)
+                        if u"DUT2" in nodes.keys()
+                        else Topology.get_interface_mac(
+                            nodes[u"TG"], if2_key
+                        )
+                    ),
+                    ip_address=tun_ips[u"ip2"].compressed
+                )
+            )
+            err_msg = f"Failed to add IP neighbor on interface {if1_key}"
+            papi_exec.add(cmd2, **args2).get_reply(err_msg)
+
+            return loop_sw_if_idx
+
+    @staticmethod
+    def _ipsec_create_tunnel_interfaces_dut1_papi(
+            nodes, tun_ips, if1_key, if2_key, n_tunnels, crypto_alg, integ_alg,
+            raddr_ip2, addr_incr, spi_d, existing_tunnels=0):
+        """Create multiple IPsec tunnel interfaces on DUT1 node using PAPI.
+
+        Generate random keys and return them (so DUT2 or TG can decrypt).
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_ips: Dictionary with VPP node 1 ipsec tunnel interface
+            IPv4/IPv6 address (ip1) and VPP node 2 ipsec tunnel interface
+            IPv4/IPv6 address (ip2).
+        :param if1_key: VPP node 1 interface key from topology file.
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :param n_tunnels: Number of tunnel interfaces to be there at the end.
+        :param crypto_alg: The encryption algorithm name.
+        :param integ_alg: The integrity algorithm name.
+        :param raddr_ip2: Policy selector remote IPv4/IPv6 start address for the
+            first tunnel in direction node2->node1.
+        :param spi_d: Dictionary with SPIs for VPP node 1 and VPP node 2.
+        :param addr_incr: IP / IPv6 address incremental step.
+        :param existing_tunnels: Number of tunnel interfaces before creation.
+            Useful mainly for reconf tests. Default 0.
+        :type nodes: dict
+        :type tun_ips: dict
+        :type if1_key: str
+        :type if2_key: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type integ_alg: Optional[IntegAlg]
+        :type raddr_ip2: IPv4Address or IPv6Address
+        :type addr_incr: int
+        :type spi_d: dict
+        :type existing_tunnels: int
+        :returns: Generated ckeys and ikeys.
+        :rtype: List[bytes], List[bytes]
+        """
+        if not existing_tunnels:
+            loop_sw_if_idx = IPsecUtil._ipsec_create_loopback_dut1_papi(
+                nodes, tun_ips, if1_key, if2_key
+            )
+        else:
+            loop_sw_if_idx = InterfaceUtil.vpp_get_interface_sw_index(
+                nodes[u"DUT1"], u"loop0"
+            )
+        with PapiSocketExecutor(nodes[u"DUT1"]) as papi_exec:
+            # Configure IP addresses on loop0 interface
+            cmd = u"sw_interface_add_del_address"
+            args = dict(
+                sw_if_index=loop_sw_if_idx,
+                is_add=True,
+                del_all=False,
+                prefix=None
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"prefix"] = IPUtil.create_prefix_object(
+                    tun_ips[u"ip1"] + i * addr_incr,
+                    128 if tun_ips[u"ip1"].version == 6 else 32
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            # Configure IPIP tunnel interfaces
+            cmd = u"ipip_add_tunnel"
+            ipip_tunnel = dict(
+                instance=Constants.BITWISE_NON_ZERO,
+                src=None,
+                dst=None,
+                table_id=0,
+                flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                mode=int(TunnelMode.TUNNEL_API_MODE_P2P),
+                dscp=int(IpDscp.IP_API_DSCP_CS0)
+            )
+            args = dict(
+                tunnel=ipip_tunnel
+            )
+            ipip_tunnels = [None] * existing_tunnels
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"src"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip1"] + i * addr_incr
+                )
+                args[u"tunnel"][u"dst"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip2"]
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPIP tunnel interfaces on host" \
+                f" {nodes[u'DUT1'][u'host']}"
+            ipip_tunnels.extend(
+                [
+                    reply[u"sw_if_index"]
+                    for reply in papi_exec.get_replies(err_msg)
+                    if u"sw_if_index" in reply
+                ]
+            )
+            # Configure IPSec SAD entries
+            ckeys = [bytes()] * existing_tunnels
+            ikeys = [bytes()] * existing_tunnels
+            cmd = u"ipsec_sad_entry_add_del_v3"
+            c_key = dict(
+                length=0,
+                data=None
+            )
+            i_key = dict(
+                length=0,
+                data=None
+            )
+            sad_entry = dict(
+                sad_id=None,
+                spi=None,
+                protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+                crypto_algorithm=crypto_alg.alg_int_repr,
+                crypto_key=c_key,
+                integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+                integrity_key=i_key,
+                flags=None,
+                tunnel=dict(
+                    src=0,
+                    dst=0,
+                    table_id=0,
+                    encap_decap_flags=int(
+                        TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                    ),
+                    dscp=int(IpDscp.IP_API_DSCP_CS0),
+                ),
+                salt=0,
+                udp_src_port=IPSEC_UDP_PORT_NONE,
+                udp_dst_port=IPSEC_UDP_PORT_NONE,
+            )
+            args = dict(
+                is_add=True,
+                entry=sad_entry
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                ckeys.append(
+                    gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg))
+                )
+                ikeys.append(
+                    gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
+                )
+                # SAD entry for outband / tx path
+                args[u"entry"][u"sad_id"] = i
+                args[u"entry"][u"spi"] = spi_d[u"spi_1"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+                # SAD entry for inband / rx path
+                args[u"entry"][u"sad_id"] = 100000 + i
+                args[u"entry"][u"spi"] = spi_d[u"spi_2"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE |
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_INBOUND
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPsec SAD entries on host" \
+                f" {nodes[u'DUT1'][u'host']}"
+            papi_exec.get_replies(err_msg)
+            # Add protection for tunnels with IPSEC
+            cmd = u"ipsec_tunnel_protect_update"
+            n_hop = dict(
+                address=0,
+                via_label=MPLS_LABEL_INVALID,
+                obj_id=Constants.BITWISE_NON_ZERO
+            )
+            ipsec_tunnel_protect = dict(
+                sw_if_index=None,
+                nh=n_hop,
+                sa_out=None,
+                n_sa_in=1,
+                sa_in=None
+            )
+            args = dict(
+                tunnel=ipsec_tunnel_protect
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"sw_if_index"] = ipip_tunnels[i]
+                args[u"tunnel"][u"sa_out"] = i
+                args[u"tunnel"][u"sa_in"] = [100000 + i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add protection for tunnels with IPSEC " \
+                f"on host {nodes[u'DUT1'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
+            # Configure unnumbered interfaces
+            cmd = u"sw_interface_set_unnumbered"
+            args = dict(
+                is_add=True,
+                sw_if_index=InterfaceUtil.get_interface_index(
+                    nodes[u"DUT1"], if1_key
+                ),
+                unnumbered_sw_if_index=0
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"unnumbered_sw_if_index"] = ipip_tunnels[i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            # Set interfaces up
+            cmd = u"sw_interface_set_flags"
+            args = dict(
+                sw_if_index=0,
+                flags=InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"sw_if_index"] = ipip_tunnels[i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            # Configure IP routes
+            cmd = u"ip_route_add_del"
+            args = dict(
+                is_add=1,
+                is_multipath=0,
+                route=None
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"route"] = IPUtil.compose_vpp_route_structure(
+                    nodes[u"DUT1"], (raddr_ip2 + i).compressed,
+                    prefix_len=128 if raddr_ip2.version == 6 else 32,
+                    interface=ipip_tunnels[i]
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IP routes on host " \
+                f"{nodes[u'DUT1'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
+        return ckeys, ikeys
+
+    @staticmethod
+    def _ipsec_create_tunnel_interfaces_dut2_papi(
+            nodes, tun_ips, if2_key, n_tunnels, crypto_alg, ckeys, integ_alg,
+            ikeys, raddr_ip1, addr_incr, spi_d, existing_tunnels=0):
+        """Create multiple IPsec tunnel interfaces on DUT2 node using PAPI.
+
+        This method accesses keys generated by DUT1 method
+        and does not return anything.
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_ips: Dictionary with VPP node 1 ipsec tunnel interface
+            IPv4/IPv6 address (ip1) and VPP node 2 ipsec tunnel interface
+            IPv4/IPv6 address (ip2).
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :param n_tunnels: Number of tunnel interfaces to be there at the end.
+        :param crypto_alg: The encryption algorithm name.
+        :param ckeys: List of encryption keys.
+        :param integ_alg: The integrity algorithm name.
+        :param ikeys: List of integrity keys.
+        :param spi_d: Dictionary with SPIs for VPP node 1 and VPP node 2.
+        :param addr_incr: IP / IPv6 address incremental step.
+        :param existing_tunnels: Number of tunnel interfaces before creation.
+            Useful mainly for reconf tests. Default 0.
+        :type nodes: dict
+        :type tun_ips: dict
+        :type if2_key: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type ckeys: Sequence[bytes]
+        :type integ_alg: Optional[IntegAlg]
+        :type ikeys: Sequence[bytes]
+        :type addr_incr: int
+        :type spi_d: dict
+        :type existing_tunnels: int
+        """
+        with PapiSocketExecutor(nodes[u"DUT2"]) as papi_exec:
+            if not existing_tunnels:
+                # Set IP address on VPP node 2 interface
+                cmd = u"sw_interface_add_del_address"
+                args = dict(
+                    sw_if_index=InterfaceUtil.get_interface_index(
+                        nodes[u"DUT2"], if2_key
+                    ),
+                    is_add=True,
+                    del_all=False,
+                    prefix=IPUtil.create_prefix_object(
+                        tun_ips[u"ip2"], 96 if tun_ips[u"ip2"].version == 6
+                        else 24
+                    )
+                )
+                err_msg = f"Failed to set IP address on interface {if2_key} " \
+                    f"on host {nodes[u'DUT2'][u'host']}"
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+            # Configure IPIP tunnel interfaces
+            cmd = u"ipip_add_tunnel"
+            ipip_tunnel = dict(
+                instance=Constants.BITWISE_NON_ZERO,
+                src=None,
+                dst=None,
+                table_id=0,
+                flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                mode=int(TunnelMode.TUNNEL_API_MODE_P2P),
+                dscp=int(IpDscp.IP_API_DSCP_CS0)
+            )
+            args = dict(
+                tunnel=ipip_tunnel
+            )
+            ipip_tunnels = [None] * existing_tunnels
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"src"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip2"]
+                )
+                args[u"tunnel"][u"dst"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip1"] + i * addr_incr
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPIP tunnel interfaces on host" \
+                f" {nodes[u'DUT2'][u'host']}"
+            ipip_tunnels.extend(
+                [
+                    reply[u"sw_if_index"]
+                    for reply in papi_exec.get_replies(err_msg)
+                    if u"sw_if_index" in reply
+                ]
+            )
+            # Configure IPSec SAD entries
+            cmd = u"ipsec_sad_entry_add_del_v3"
+            c_key = dict(
+                length=0,
+                data=None
+            )
+            i_key = dict(
+                length=0,
+                data=None
+            )
+            sad_entry = dict(
+                sad_id=None,
+                spi=None,
+                protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+                crypto_algorithm=crypto_alg.alg_int_repr,
+                crypto_key=c_key,
+                integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+                integrity_key=i_key,
+                flags=None,
+                tunnel=dict(
+                    src=0,
+                    dst=0,
+                    table_id=0,
+                    encap_decap_flags=int(
+                        TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                    ),
+                    dscp=int(IpDscp.IP_API_DSCP_CS0),
+                ),
+                salt=0,
+                udp_src_port=IPSEC_UDP_PORT_NONE,
+                udp_dst_port=IPSEC_UDP_PORT_NONE,
+            )
+            args = dict(
+                is_add=True,
+                entry=sad_entry
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                ckeys.append(
+                    gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg))
+                )
+                ikeys.append(
+                    gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
+                )
+                # SAD entry for outband / tx path
+                args[u"entry"][u"sad_id"] = 100000 + i
+                args[u"entry"][u"spi"] = spi_d[u"spi_2"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+                # SAD entry for inband / rx path
+                args[u"entry"][u"sad_id"] = i
+                args[u"entry"][u"spi"] = spi_d[u"spi_1"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE |
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_INBOUND
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPsec SAD entries on host" \
+                f" {nodes[u'DUT2'][u'host']}"
+            papi_exec.get_replies(err_msg)
+            # Add protection for tunnels with IPSEC
+            cmd = u"ipsec_tunnel_protect_update"
+            n_hop = dict(
+                address=0,
+                via_label=MPLS_LABEL_INVALID,
+                obj_id=Constants.BITWISE_NON_ZERO
+            )
+            ipsec_tunnel_protect = dict(
+                sw_if_index=None,
+                nh=n_hop,
+                sa_out=None,
+                n_sa_in=1,
+                sa_in=None
+            )
+            args = dict(
+                tunnel=ipsec_tunnel_protect
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"sw_if_index"] = ipip_tunnels[i]
+                args[u"tunnel"][u"sa_out"] = 100000 + i
+                args[u"tunnel"][u"sa_in"] = [i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add protection for tunnels with IPSEC " \
+                f"on host {nodes[u'DUT2'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
+            if not existing_tunnels:
+                # Configure IP route
+                cmd = u"ip_route_add_del"
+                route = IPUtil.compose_vpp_route_structure(
+                    nodes[u"DUT2"], tun_ips[u"ip1"].compressed,
+                    prefix_len=32 if tun_ips[u"ip1"].version == 6 else 8,
+                    interface=if2_key,
+                    gateway=(tun_ips[u"ip2"] - 1).compressed
+                )
+                args = dict(
+                    is_add=1,
+                    is_multipath=0,
+                    route=route
+                )
+                papi_exec.add(cmd, **args)
+            # Configure unnumbered interfaces
+            cmd = u"sw_interface_set_unnumbered"
+            args = dict(
+                is_add=True,
+                sw_if_index=InterfaceUtil.get_interface_index(
+                    nodes[u"DUT2"], if2_key
+                ),
+                unnumbered_sw_if_index=0
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"unnumbered_sw_if_index"] = ipip_tunnels[i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            # Set interfaces up
+            cmd = u"sw_interface_set_flags"
+            args = dict(
+                sw_if_index=0,
+                flags=InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"sw_if_index"] = ipip_tunnels[i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            # Configure IP routes
+            cmd = u"ip_route_add_del"
+            args = dict(
+                is_add=1,
+                is_multipath=0,
+                route=None
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"route"] = IPUtil.compose_vpp_route_structure(
+                    nodes[u"DUT1"], (raddr_ip1 + i).compressed,
+                    prefix_len=128 if raddr_ip1.version == 6 else 32,
+                    interface=ipip_tunnels[i]
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IP routes " \
+                f"on host {nodes[u'DUT2'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
+    @staticmethod
+    def vpp_ipsec_create_tunnel_interfaces(
+            nodes, tun_if1_ip_addr, tun_if2_ip_addr, if1_key, if2_key,
+            n_tunnels, crypto_alg, integ_alg, raddr_ip1, raddr_ip2, raddr_range,
+            existing_tunnels=0, return_keys=False):
+        """Create multiple IPsec tunnel interfaces between two VPP nodes.
+
+        Some deployments (e.g. devicetest) need to know the generated keys.
+        But other deployments (e.g. scale perf test) would get spammed
+        if we returned keys every time.
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param tun_if1_ip_addr: VPP node 1 ipsec tunnel interface IPv4/IPv6
+            address.
+        :param tun_if2_ip_addr: VPP node 2 ipsec tunnel interface IPv4/IPv6
+            address.
+        :param if1_key: VPP node 1 interface key from topology file.
+        :param if2_key: VPP node 2 / TG node (in case of 2-node topology)
+            interface key from topology file.
+        :param n_tunnels: Number of tunnel interfaces to be there at the end.
+        :param crypto_alg: The encryption algorithm name.
+        :param integ_alg: The integrity algorithm name.
+        :param raddr_ip1: Policy selector remote IPv4/IPv6 start address for the
+            first tunnel in direction node1->node2.
+        :param raddr_ip2: Policy selector remote IPv4/IPv6 start address for the
+            first tunnel in direction node2->node1.
+        :param raddr_range: Mask specifying range of Policy selector Remote
+            IPv4/IPv6 addresses. Valid values are from 1 to 32 in case of IPv4
+            and to 128 in case of IPv6.
+        :param existing_tunnels: Number of tunnel interfaces before creation.
+            Useful mainly for reconf tests. Default 0.
+        :param return_keys: Whether generated keys should be returned.
+        :type nodes: dict
+        :type tun_if1_ip_addr: str
+        :type tun_if2_ip_addr: str
+        :type if1_key: str
+        :type if2_key: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type integ_alg: Optonal[IntegAlg]
+        :type raddr_ip1: string
+        :type raddr_ip2: string
+        :type raddr_range: int
+        :type existing_tunnels: int
+        :type return_keys: bool
+        :returns: Ckeys, ikeys, spi_1, spi_2.
+        :rtype: Optional[List[bytes], List[bytes], int, int]
+        """
+        n_tunnels = int(n_tunnels)
+        existing_tunnels = int(existing_tunnels)
+        spi_d = dict(
+            spi_1=100000,
+            spi_2=200000
+        )
+        tun_ips = dict(
+            ip1=ip_address(tun_if1_ip_addr),
+            ip2=ip_address(tun_if2_ip_addr)
+        )
+        raddr_ip1 = ip_address(raddr_ip1)
+        raddr_ip2 = ip_address(raddr_ip2)
+        addr_incr = 1 << (128 - raddr_range) if tun_ips[u"ip1"].version == 6 \
+            else 1 << (32 - raddr_range)
+
+        if n_tunnels - existing_tunnels > 10:
+            ckeys, ikeys = IPsecUtil._ipsec_create_tunnel_interfaces_dut1_vat(
+                nodes, tun_ips, if1_key, if2_key, n_tunnels, crypto_alg,
+                integ_alg, raddr_ip2, addr_incr, spi_d, existing_tunnels
+            )
+            if u"DUT2" in nodes.keys():
+                IPsecUtil._ipsec_create_tunnel_interfaces_dut2_vat(
+                    nodes, tun_ips, if2_key, n_tunnels, crypto_alg, ckeys,
+                    integ_alg, ikeys, raddr_ip1, addr_incr, spi_d,
+                    existing_tunnels
+                )
+        else:
+            ckeys, ikeys = IPsecUtil._ipsec_create_tunnel_interfaces_dut1_papi(
+                nodes, tun_ips, if1_key, if2_key, n_tunnels, crypto_alg,
+                integ_alg, raddr_ip2, addr_incr, spi_d, existing_tunnels
+            )
+            if u"DUT2" in nodes.keys():
+                IPsecUtil._ipsec_create_tunnel_interfaces_dut2_papi(
+                    nodes, tun_ips, if2_key, n_tunnels, crypto_alg, ckeys,
+                    integ_alg, ikeys, raddr_ip1, addr_incr, spi_d,
+                    existing_tunnels
+                )
+
+        if return_keys:
+            return ckeys, ikeys, spi_d[u"spi_1"], spi_d[u"spi_2"]
+        return None
+
+    @staticmethod
+    def _create_ipsec_script_files(dut, instances):
+        """Create script files for configuring IPsec in containers
+
+        :param dut: DUT node on which to create the script files
+        :param instances: number of containers on DUT node
+        :type dut: string
+        :type instances: int
+        """
+        scripts = []
+        for cnf in range(0, instances):
+            script_filename = (
+                f"/tmp/ipsec_create_tunnel_cnf_{dut}_{cnf + 1}.config"
+            )
+            scripts.append(open(script_filename, 'w'))
+        return scripts
+
+    @staticmethod
+    def _close_and_copy_ipsec_script_files(
+            dut, nodes, instances, scripts):
+        """Close created scripts and copy them to containers
+
+        :param dut: DUT node on which to create the script files
+        :param nodes: VPP nodes
+        :param instances: number of containers on DUT node
+        :param scripts: dictionary holding the script files
+        :type dut: string
+        :type nodes: dict
+        :type instances: int
+        :type scripts: dict
+        """
+        for cnf in range(0, instances):
+            scripts[cnf].close()
+            script_filename = (
+                f"/tmp/ipsec_create_tunnel_cnf_{dut}_{cnf + 1}.config"
+            )
+            scp_node(nodes[dut], script_filename, script_filename)
+
+
+    @staticmethod
+    def vpp_ipsec_create_tunnel_interfaces_in_containers(
+            nodes, if1_ip_addr, if2_ip_addr, n_tunnels, crypto_alg, integ_alg,
+            raddr_ip1, raddr_ip2, raddr_range, n_instances):
+        """Create multiple IPsec tunnel interfaces between two VPP nodes.
+
+        :param nodes: VPP nodes to create tunnel interfaces.
+        :param if1_ip_addr: VPP node 1 interface IP4 address.
+        :param if2_ip_addr: VPP node 2 interface IP4 address.
+        :param n_tunnels: Number of tunnell interfaces to create.
+        :param crypto_alg: The encryption algorithm name.
+        :param integ_alg: The integrity algorithm name.
+        :param raddr_ip1: Policy selector remote IPv4 start address for the
+            first tunnel in direction node1->node2.
+        :param raddr_ip2: Policy selector remote IPv4 start address for the
+            first tunnel in direction node2->node1.
+        :param raddr_range: Mask specifying range of Policy selector Remote
+            IPv4 addresses. Valid values are from 1 to 32.
+        :param n_instances: Number of containers.
+        :type nodes: dict
+        :type if1_ip_addr: str
+        :type if2_ip_addr: str
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type integ_alg: Optional[IntegAlg]
+        :type raddr_ip1: string
+        :type raddr_ip2: string
+        :type raddr_range: int
+        :type n_instances: int
+        """
+        spi_1 = 100000
+        spi_2 = 200000
+        addr_incr = 1 << (32 - raddr_range)
+
+        dut1_scripts = IPsecUtil._create_ipsec_script_files(
+            u"DUT1", n_instances
+        )
+        dut2_scripts = IPsecUtil._create_ipsec_script_files(
+            u"DUT2", n_instances
+        )
+
+        for cnf in range(0, n_instances):
+            dut1_scripts[cnf].write(
+                u"create loopback interface\n"
+                u"set interface state loop0 up\n\n"
+            )
+            dut2_scripts[cnf].write(
+                f"ip route add {if1_ip_addr}/8 via "
+                f"{ip_address(if2_ip_addr) + cnf + 100} memif1/{cnf + 1}\n\n"
+            )
+
+        for tnl in range(0, n_tunnels):
+            cnf = tnl % n_instances
+            ckey = getattr(
+                gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg)), u"hex"
+            )
+            integ = u""
+            ikey = getattr(
+                gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg)), u"hex"
+            )
+            if integ_alg:
+                integ = (
+                    f"integ-alg {integ_alg.alg_name} "
+                    f"local-integ-key {ikey} "
+                    f"remote-integ-key {ikey} "
+                )
+            # Configure tunnel end point(s) on left side
+            dut1_scripts[cnf].write(
+                u"set interface ip address loop0 "
+                f"{ip_address(if1_ip_addr) + tnl * addr_incr}/32\n"
+                f"create ipsec tunnel "
+                f"local-ip {ip_address(if1_ip_addr) + tnl * addr_incr} "
+                f"local-spi {spi_1 + tnl} "
+                f"remote-ip {ip_address(if2_ip_addr) + cnf} "
+                f"remote-spi {spi_2 + tnl} "
+                f"crypto-alg {crypto_alg.alg_name} "
+                f"local-crypto-key {ckey} "
+                f"remote-crypto-key {ckey} "
+                f"instance {tnl // n_instances} "
+                f"salt 0x0 "
+                f"{integ} \n"
+                f"set interface unnumbered ipip{tnl // n_instances} use loop0\n"
+                f"set interface state ipip{tnl // n_instances} up\n"
+                f"ip route add {ip_address(raddr_ip2)+tnl}/32 "
+                f"via ipip{tnl // n_instances}\n\n"
+            )
+            # Configure tunnel end point(s) on right side
+            dut2_scripts[cnf].write(
+                f"set ip neighbor memif1/{cnf + 1} "
+                f"{ip_address(if1_ip_addr) + tnl * addr_incr} "
+                f"02:02:00:00:{17:02X}:{cnf:02X} static\n"
+                f"create ipsec tunnel local-ip {ip_address(if2_ip_addr) + cnf} "
+                f"local-spi {spi_2 + tnl} "
+                f"remote-ip {ip_address(if1_ip_addr) + tnl * addr_incr} "
+                f"remote-spi {spi_1 + tnl} "
+                f"crypto-alg {crypto_alg.alg_name} "
+                f"local-crypto-key {ckey} "
+                f"remote-crypto-key {ckey} "
+                f"instance {tnl // n_instances} "
+                f"salt 0x0 "
+                f"{integ}\n"
+                f"set interface unnumbered ipip{tnl // n_instances} "
+                f"use memif1/{cnf + 1}\n"
+                f"set interface state ipip{tnl // n_instances} up\n"
+                f"ip route add {ip_address(raddr_ip1) + tnl}/32 "
+                f"via ipip{tnl // n_instances}\n\n"
+            )
+
+        IPsecUtil._close_and_copy_ipsec_script_files(
+            u"DUT1", nodes, n_instances, dut1_scripts)
+        IPsecUtil._close_and_copy_ipsec_script_files(
+            u"DUT2", nodes, n_instances, dut2_scripts)
+
+    @staticmethod
+    def vpp_ipsec_add_multiple_tunnels(
+            nodes, interface1, interface2, n_tunnels, crypto_alg, integ_alg,
+            tunnel_ip1, tunnel_ip2, raddr_ip1, raddr_ip2, raddr_range):
+        """Create multiple IPsec tunnels between two VPP nodes.
+
+        :param nodes: VPP nodes to create tunnels.
+        :param interface1: Interface name or sw_if_index on node 1.
+        :param interface2: Interface name or sw_if_index on node 2.
+        :param n_tunnels: Number of tunnels to create.
+        :param crypto_alg: The encryption algorithm name.
+        :param integ_alg: The integrity algorithm name.
+        :param tunnel_ip1: Tunnel node1 IPv4 address.
+        :param tunnel_ip2: Tunnel node2 IPv4 address.
+        :param raddr_ip1: Policy selector remote IPv4 start address for the
+            first tunnel in direction node1->node2.
+        :param raddr_ip2: Policy selector remote IPv4 start address for the
+            first tunnel in direction node2->node1.
+        :param raddr_range: Mask specifying range of Policy selector Remote
+            IPv4 addresses. Valid values are from 1 to 32.
+        :type nodes: dict
+        :type interface1: str or int
+        :type interface2: str or int
+        :type n_tunnels: int
+        :type crypto_alg: CryptoAlg
+        :type integ_alg: Optional[IntegAlg]
+        :type tunnel_ip1: str
+        :type tunnel_ip2: str
+        :type raddr_ip1: string
+        :type raddr_ip2: string
+        :type raddr_range: int
+        """
+        spd_id = 1
+        p_hi = 100
+        p_lo = 10
+        sa_id_1 = 100000
+        sa_id_2 = 200000
+        spi_1 = 300000
+        spi_2 = 400000
+        dut1_local_outbound_range = ip_network(f"{tunnel_ip1}/8", False).\
+            with_prefixlen
+        dut1_remote_outbound_range = ip_network(f"{tunnel_ip2}/8", False).\
+            with_prefixlen
+
+        crypto_key = gen_key(
+            IPsecUtil.get_crypto_alg_key_len(crypto_alg)
+        ).decode()
+        integ_key = gen_key(
+            IPsecUtil.get_integ_alg_key_len(integ_alg)
+        ).decode() if integ_alg else u""
+
+        rmac = Topology.get_interface_mac(nodes[u"DUT2"], interface2) \
+            if u"DUT2" in nodes.keys() \
+            else Topology.get_interface_mac(nodes[u"TG"], interface2)
+        IPsecUtil.vpp_ipsec_set_ip_route(
+            nodes[u"DUT1"], n_tunnels, tunnel_ip1, raddr_ip2, tunnel_ip2,
+            interface1, raddr_range, rmac)
+
+        IPsecUtil.vpp_ipsec_add_spd(nodes[u"DUT1"], spd_id)
+        IPsecUtil.vpp_ipsec_spd_add_if(nodes[u"DUT1"], spd_id, interface1)
+        IPsecUtil.vpp_ipsec_add_spd_entry(
+            nodes[u"DUT1"], spd_id, p_hi, PolicyAction.BYPASS, inbound=False,
+            proto=50, laddr_range=dut1_local_outbound_range,
+            raddr_range=dut1_remote_outbound_range
+        )
+        IPsecUtil.vpp_ipsec_add_spd_entry(
+            nodes[u"DUT1"], spd_id, p_hi, PolicyAction.BYPASS, inbound=True,
+            proto=50, laddr_range=dut1_remote_outbound_range,
+            raddr_range=dut1_local_outbound_range
+        )
+
+        IPsecUtil.vpp_ipsec_add_sad_entries(
+            nodes[u"DUT1"], n_tunnels, sa_id_1, spi_1, crypto_alg, crypto_key,
+            integ_alg, integ_key, tunnel_ip1, tunnel_ip2
+        )
+
+        IPsecUtil.vpp_ipsec_add_spd_entries(
+            nodes[u"DUT1"], n_tunnels, spd_id, priority=ObjIncrement(p_lo, 0),
+            action=PolicyAction.PROTECT, inbound=False,
+            sa_id=ObjIncrement(sa_id_1, 1),
+            raddr_range=NetworkIncrement(ip_network(raddr_ip2))
+        )
+
+        IPsecUtil.vpp_ipsec_add_sad_entries(
+            nodes[u"DUT1"], n_tunnels, sa_id_2, spi_2, crypto_alg, crypto_key,
+            integ_alg, integ_key, tunnel_ip2, tunnel_ip1
+        )
+        IPsecUtil.vpp_ipsec_add_spd_entries(
+            nodes[u"DUT1"], n_tunnels, spd_id, priority=ObjIncrement(p_lo, 0),
+            action=PolicyAction.PROTECT, inbound=True,
+            sa_id=ObjIncrement(sa_id_2, 1),
+            raddr_range=NetworkIncrement(ip_network(raddr_ip1))
+        )
+
+        if u"DUT2" in nodes.keys():
+            rmac = Topology.get_interface_mac(nodes[u"DUT1"], interface1)
+            IPsecUtil.vpp_ipsec_set_ip_route(
+                nodes[u"DUT2"], n_tunnels, tunnel_ip2, raddr_ip1, tunnel_ip1,
+                interface2, raddr_range, rmac)
+
+            IPsecUtil.vpp_ipsec_add_spd(nodes[u"DUT2"], spd_id)
+            IPsecUtil.vpp_ipsec_spd_add_if(nodes[u"DUT2"], spd_id, interface2)
+            IPsecUtil.vpp_ipsec_add_spd_entry(
+                nodes[u"DUT2"], spd_id, p_hi, PolicyAction.BYPASS,
+                inbound=False, proto=50, laddr_range=dut1_remote_outbound_range,
+                raddr_range=dut1_local_outbound_range
+            )
+            IPsecUtil.vpp_ipsec_add_spd_entry(
+                nodes[u"DUT2"], spd_id, p_hi, PolicyAction.BYPASS,
+                inbound=True, proto=50, laddr_range=dut1_local_outbound_range,
+                raddr_range=dut1_remote_outbound_range
+            )
+
+            IPsecUtil.vpp_ipsec_add_sad_entries(
+                nodes[u"DUT2"], n_tunnels, sa_id_1, spi_1, crypto_alg,
+                crypto_key, integ_alg, integ_key, tunnel_ip1, tunnel_ip2
+            )
+            IPsecUtil.vpp_ipsec_add_spd_entries(
+                nodes[u"DUT2"], n_tunnels, spd_id,
+                priority=ObjIncrement(p_lo, 0),
+                action=PolicyAction.PROTECT, inbound=True,
+                sa_id=ObjIncrement(sa_id_1, 1),
+                raddr_range=NetworkIncrement(ip_network(raddr_ip2))
+            )
+
+            IPsecUtil.vpp_ipsec_add_sad_entries(
+                nodes[u"DUT2"], n_tunnels, sa_id_2, spi_2, crypto_alg,
+                crypto_key, integ_alg, integ_key, tunnel_ip2, tunnel_ip1
+            )
+            IPsecUtil.vpp_ipsec_add_spd_entries(
+                nodes[u"DUT2"], n_tunnels, spd_id,
+                priority=ObjIncrement(p_lo, 0),
+                action=PolicyAction.PROTECT, inbound=False,
+                sa_id=ObjIncrement(sa_id_2, 1),
+                raddr_range=NetworkIncrement(ip_network(raddr_ip1))
+            )
+
+    @staticmethod
+    def vpp_ipsec_show_all(node):
+        """Run "show ipsec all" debug CLI command.
 
         :param node: Node to run command on.
         :type node: dict
         """
-        VatExecutor().execute_script("ipsec/ipsec_show.vat", node,
-                                     json_out=False)
+        PapiSocketExecutor.run_cli_cmd(node, u"show ipsec all")
+
+    @staticmethod
+    def show_ipsec_security_association(node):
+        """Show IPSec security association.
+
+        :param node: DUT node.
+        :type node: dict
+        """
+        cmds = [
+            u"ipsec_sa_v3_dump"
+        ]
+        PapiSocketExecutor.dump_and_log(node, cmds)