aboutsummaryrefslogtreecommitdiffstats
path: root/resources/libraries/python/honeycomb/HcAPIKwInterfaces.py
blob: 035016c27680f1abe61c6a5bf951894f7289e737 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
# Copyright (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Keywords to manipulate interface configuration using Honeycomb REST API.

The keywords make possible to put and get configuration data and to get
operational data.
"""
from robot.api import logger

from resources.libraries.python.topology import Topology
from resources.libraries.python.HTTPRequest import HTTPCodes
from resources.libraries.python.honeycomb.HoneycombSetup import HoneycombError
from resources.libraries.python.honeycomb.HoneycombUtil \
    import DataRepresentation
from resources.libraries.python.honeycomb.HoneycombUtil \
    import HoneycombUtil as HcUtil


# pylint: disable=too-many-public-methods
# pylint: disable=too-many-lines
class InterfaceKeywords(object):
    """Keywords for Interface manipulation.

    Implements keywords which get configuration and operational data about
    vpp interfaces and set the interface's parameters using Honeycomb REST API.
    """

    INTF_PARAMS = ("name", "description", "type", "enabled",
                   "link-up-down-trap-enable", "v3po:l2", "v3po:vxlan-gpe",
                   "vpp-vlan:sub-interfaces")
    IPV4_PARAMS = ("enabled", "forwarding", "mtu")
    IPV6_PARAMS = ("enabled", "forwarding", "mtu", "dup-addr-detect-transmits")
    IPV6_AUTOCONF_PARAMS = ("create-global-addresses",
                            "create-temporary-addresses",
                            "temporary-valid-lifetime",
                            "temporary-preferred-lifetime")
    ETH_PARAMS = ("mtu", )
    ROUTING_PARAMS = ("vrf-id", )
    VXLAN_PARAMS = ("src", "dst", "vni", "encap-vrf-id")
    L2_PARAMS = ("bridge-domain", "split-horizon-group",
                 "bridged-virtual-interface")
    TAP_PARAMS = ("tap-name", "mac", "device-instance")
    VHOST_USER_PARAMS = ("socket", "role")
    SUB_IF_PARAMS = ("identifier",
                     "vlan-type",
                     "enabled")
    SUB_IF_MATCH = ("default",
                    "untagged",
                    "vlan-tagged",
                    "vlan-tagged-exact-match")
    BD_PARAMS = ("bridge-domain",
                 "split-horizon-group",
                 "bridged-virtual-interface")
    VXLAN_GPE_PARAMS = ("local",
                        "remote",
                        "vni",
                        "next-protocol",
                        "encap-vrf-id",
                        "decap-vrf-id")

    def __init__(self):
        pass

    @staticmethod
    def _configure_interface(node, interface, data,
                             data_representation=DataRepresentation.JSON):
        """Send interface configuration data and check the response.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param data: Configuration data to be sent in PUT request.
        :param data_representation: How the data is represented.
        :type node: dict
        :type interface: str
        :type data: dict
        :type data_representation: DataRepresentation
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the status code in response on PUT is not
        200 = OK.
        """

        status_code, resp = HcUtil.\
            put_honeycomb_data(node, "config_vpp_interfaces", data,
                               data_representation=data_representation)
        if status_code not in (HTTPCodes.OK, HTTPCodes.ACCEPTED):
            raise HoneycombError(
                "The configuration of interface '{0}' was not successful. "
                "Status code: {1}.".format(interface, status_code))
        return resp

    @staticmethod
    def get_all_interfaces_cfg_data(node):
        """Get configuration data about all interfaces from Honeycomb.

        :param node: Honeycomb node.
        :type node: dict
        :return: Configuration data about all interfaces from Honeycomb.
        :rtype: list
        :raises HoneycombError: If it is not possible to get configuration data.
        """

        status_code, resp = HcUtil.\
            get_honeycomb_data(node, "config_vpp_interfaces")
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get configuration information about the "
                "interfaces. Status code: {0}.".format(status_code))
        try:
            return resp["interfaces"]["interface"]

        except (KeyError, TypeError):
            return []

    @staticmethod
    def get_interface_cfg_data(node, interface):
        """Get configuration data about the given interface from Honeycomb.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Configuration data about the given interface from Honeycomb.
        :rtype: dict
        """

        intfs = InterfaceKeywords.get_all_interfaces_cfg_data(node)
        for intf in intfs:
            if intf["name"] == interface:
                return intf
        return {}

    @staticmethod
    def get_all_interfaces_oper_data(node):
        """Get operational data about all interfaces from Honeycomb.

        :param node: Honeycomb node.
        :type node: dict
        :return: Operational data about all interfaces from Honeycomb.
        :rtype: list
        :raises HoneycombError: If it is not possible to get operational data.
        """

        status_code, resp = HcUtil.\
            get_honeycomb_data(node, "oper_vpp_interfaces")
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get operational information about the "
                "interfaces. Status code: {0}.".format(status_code))
        try:
            return resp["interfaces-state"]["interface"]

        except (KeyError, TypeError):
            return []

    @staticmethod
    def get_disabled_interfaces_oper_data(node):
        """Get operational data about all disabled interfaces from Honeycomb.

        :param node: Honeycomb node.
        :type node: dict
        :return: Operational data about disabled interfaces.
        :rtype: list
        :raises HoneycombError: If it is not possible to get operational data.
        """

        status_code, resp = HcUtil. \
            get_honeycomb_data(node, "oper_disabled_interfaces")
        if status_code == HTTPCodes.NOT_FOUND:
            raise HoneycombError(
                "No disabled interfaces present on node."
            )
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get operational information about the "
                "interfaces. Status code: {0}.".format(status_code))
        try:
            return resp["disabled-interfaces"]["disabled-interface-index"]

        except (KeyError, TypeError):
            return []

    @staticmethod
    def get_interface_oper_data(node, interface):
        """Get operational data about the given interface from Honeycomb.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Operational data about the given interface from Honeycomb.
        :rtype: dict
        """

        intfs = InterfaceKeywords.get_all_interfaces_oper_data(node)
        for intf in intfs:
            if intf["name"] == interface:
                return intf
        return {}

    @staticmethod
    def _set_interface_properties(node, interface, path, new_value=None):
        """Set interface properties.

        This method reads interface configuration data, creates, changes or
        removes the requested data and puts it back to Honeycomb.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param path:  Path to data we want to change / create / remove.
        :param new_value: The new value to be set. If None, the item will be
        removed.
        :type node: dict
        :type interface: str
        :type path: tuple
        :type new_value: str, dict or list
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If it is not possible to get or set the data.
        """

        status_code, resp = HcUtil.\
            get_honeycomb_data(node, "config_vpp_interfaces")
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get configuration information about the "
                "interfaces. Status code: {0}.".format(status_code))

        if new_value:
            new_data = HcUtil.set_item_value(resp, path, new_value)
        else:
            new_data = HcUtil.remove_item(resp, path)
        return InterfaceKeywords._configure_interface(node, interface, new_data)

    @staticmethod
    def set_interface_state(node, interface, state="up"):
        """Set VPP interface state.

        The keyword changes the administration state of interface to up or down
        depending on the parameter "state".

        :param node: Honeycomb node.
        :param interface: Interface name, key, link name or sw_if_index.
        :param state: The requested state, only "up" and "down" are valid
        values.
        :type node: dict
        :type interface: str
        :type state: str
        :return: Content of response.
        :rtype: bytearray
        :raises KeyError: If the argument "state" is nor "up" or "down".
        :raises HoneycombError: If the interface is not present on the node.
        """

        intf_state = {"up": "true",
                      "down": "false"}

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        intf = interface.replace("/", "%2F")
        path = "/interface/{0}".format(intf)

        status_code, resp = HcUtil.\
            get_honeycomb_data(node, "config_vpp_interfaces", path)
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get configuration information about the "
                "interfaces. Status code: {0}.".format(status_code))

        resp["interface"][0]["enabled"] = intf_state[state.lower()]

        status_code, resp = HcUtil. \
            put_honeycomb_data(node, "config_vpp_interfaces", resp, path,
                               data_representation=DataRepresentation.JSON)
        if status_code not in (HTTPCodes.OK, HTTPCodes.ACCEPTED):
            raise HoneycombError(
                "The configuration of interface '{0}' was not successful. "
                "Status code: {1}.".format(interface, status_code))
        return resp

    @staticmethod
    def set_interface_up(node, interface):
        """Set the administration state of VPP interface to up.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response
        :rtype: bytearray
        """

        return InterfaceKeywords.set_interface_state(node, interface, "up")

    @staticmethod
    def set_interface_down(node, interface):
        """Set the administration state of VPP interface to down.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        return InterfaceKeywords.set_interface_state(node, interface, "down")

    @staticmethod
    def add_bridge_domain_to_interface(node, interface, bd_name,
                                       split_horizon_group=None, bvi=None):
        """Add a new bridge domain to an interface and set its parameters.

        :param node: Honeycomb node.
        :param interface: Interface name, key, link name or sw_if_index.
        :param bd_name: Bridge domain name.
        :param split_horizon_group: Split-horizon group name.
        :param bvi: The bridged virtual interface.
        :type node: dict
        :type interface: str
        :type bd_name: str
        :type split_horizon_group: str
        :type bvi: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the interface is not present on the node.
        """

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        v3po_l2 = {"bridge-domain": str(bd_name)}
        if split_horizon_group:
            v3po_l2["split-horizon-group"] = str(split_horizon_group)
        if bvi:
            v3po_l2["bridged-virtual-interface"] = str(bvi)

        path = ("interfaces", ("interface", "name", str(interface)), "v3po:l2")

        return InterfaceKeywords._set_interface_properties(
            node, interface, path, v3po_l2)

    @staticmethod
    def remove_bridge_domain_from_interface(node, interface):
        """Remove bridge domain assignment from interface.

        :param node: Honeycomb node.
        :param interface: Interface name, key, link name or sw_if_index.
        :type node: dict
        :type interface: str or int

        :raises HoneycombError: If the operation fails.
        """

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        intf = interface.replace("/", "%2F")

        path = "/interface/{0}/v3po:l2".format(intf)

        status_code, response = HcUtil.delete_honeycomb_data(
            node, "config_vpp_interfaces", path)

        if status_code != HTTPCodes.OK:
            if '"error-tag":"data-missing"' in response:
                logger.debug("Data does not exist in path.")
            else:
                raise HoneycombError(
                    "Could not remove bridge domain assignment from interface "
                    "'{0}'. Status code: {1}.".format(interface, status_code))

    @staticmethod
    def get_bd_oper_data_from_interface(node, interface):
        """Returns operational data about bridge domain settings in the
        interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Operational data about bridge domain settings in the
        interface.
        :rtype: dict
        """

        if_data = InterfaceKeywords.get_interface_oper_data(node, interface)

        if if_data:
            try:
                return if_data["v3po:l2"]
            except KeyError:
                return {}
        return {}

    @staticmethod
    def configure_interface_base(node, interface, param, value):
        """Configure the base parameters of interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        if param not in InterfaceKeywords.INTF_PARAMS:
            raise HoneycombError("The parameter {0} is invalid.".format(param))

        path = ("interfaces", ("interface", "name", interface), param)
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def configure_interface_ipv4(node, interface, param, value):
        """Configure IPv4 parameters of interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        if param not in InterfaceKeywords.IPV4_PARAMS:
            raise HoneycombError("The parameter {0} is invalid.".format(param))

        path = ("interfaces", ("interface", "name", interface),
                "ietf-ip:ipv4", param)
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def add_first_ipv4_address(node, interface, ip_addr, network):
        """Add the first IPv4 address.

        If there are any other addresses configured, they will be removed.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv4 address to be set.
        :param network: Netmask or length of network prefix.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type network: str or int
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the provided netmask or prefix is not valid.
        """

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv4")
        if isinstance(network, basestring):
            address = {"address": [{"ip": ip_addr, "netmask": network}, ]}
        elif isinstance(network, int) and (0 < network < 33):
            address = {"address": [{"ip": ip_addr, "prefix-length": network}, ]}
        else:
            raise HoneycombError("Value {0} is not a valid netmask or network "
                                 "prefix length.".format(network))
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, address)

    @staticmethod
    def add_ipv4_address(node, interface, ip_addr, network):
        """Add IPv4 address.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv4 address to be set.
        :param network: Netmask or length of network prefix.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type network: str or int
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the provided netmask or prefix is not valid.
        """

        interface = Topology.convert_interface_reference(
            node, interface, "name")

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv4",
                "address")
        if isinstance(network, basestring):
            address = {"address": [{"ip": ip_addr, "netmask": network}, ]}
        elif isinstance(network, int) and (0 < network < 33):
            address = {"address": [{"ip": ip_addr, "prefix-length": network}, ]}
        else:
            raise HoneycombError("Value {0} is not a valid netmask or network "
                                 "prefix length.".format(network))
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, address)

    @staticmethod
    def remove_all_ipv4_addresses(node, interface):
        """Remove all IPv4 addresses from interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv4",
                "address")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, None)

    @staticmethod
    def add_ipv4_neighbor(node, interface, ip_addr, link_layer_address):
        """Add the IPv4 neighbour.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv4 address of neighbour to be set.
        :param link_layer_address: Link layer address.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type link_layer_address: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv4",
                "neighbor")
        neighbor = [{"ip": ip_addr, "link-layer-address": link_layer_address}, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, neighbor)

    @staticmethod
    def remove_all_ipv4_neighbors(node, interface):
        """Remove all IPv4 neighbours.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv4",
                "neighbor")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, None)

    @staticmethod
    def configure_interface_ipv6(node, interface, param, value):
        """Configure IPv6 parameters of interface

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        if param in InterfaceKeywords.IPV6_PARAMS:
            path = ("interfaces", ("interface", "name", interface),
                    "ietf-ip:ipv6", param)
        elif param in InterfaceKeywords.IPV6_AUTOCONF_PARAMS:
            path = ("interfaces", ("interface", "name", interface),
                    "ietf-ip:ipv6", "autoconf", param)
        else:
            raise HoneycombError("The parameter {0} is invalid.".format(param))

        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def add_first_ipv6_address(node, interface, ip_addr, prefix_len):
        """Add the first IPv6 address.

        If there are any other addresses configured, they will be removed.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv6 address to be set.
        :param prefix_len: Prefix length.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type prefix_len: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv6")
        address = {"address": [{"ip": ip_addr, "prefix-length": prefix_len}, ]}
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, address)

    @staticmethod
    def add_ipv6_address(node, interface, ip_addr, prefix_len):
        """Add IPv6 address.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv6 address to be set.
        :param prefix_len: Prefix length.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type prefix_len: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv6",
                "address")
        address = [{"ip": ip_addr, "prefix-length": prefix_len}, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, address)

    @staticmethod
    def remove_all_ipv6_addresses(node, interface):
        """Remove all IPv6 addresses from interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv6",
                "address")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, None)

    @staticmethod
    def add_ipv6_neighbor(node, interface, ip_addr, link_layer_address):
        """Add the IPv6 neighbour.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param ip_addr: IPv6 address of neighbour to be set.
        :param link_layer_address: Link layer address.
        :type node: dict
        :type interface: str
        :type ip_addr: str
        :type link_layer_address: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv6",
                "neighbor")
        neighbor = [{"ip": ip_addr, "link-layer-address": link_layer_address}, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, neighbor)

    @staticmethod
    def remove_all_ipv6_neighbors(node, interface):
        """Remove all IPv6 neighbours.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces", ("interface", "name", interface), "ietf-ip:ipv6",
                "neighbor")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, None)

    @staticmethod
    def configure_interface_ethernet(node, interface, param, value):
        """Configure the ethernet parameters of interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        if param not in InterfaceKeywords.ETH_PARAMS:
            raise HoneycombError("The parameter {0} is invalid.".format(param))
        path = ("interfaces", ("interface", "name", interface), "v3po:ethernet",
                param)
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def configure_interface_routing(node, interface, param, value):
        """Configure the routing parameters of interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        if param not in InterfaceKeywords.ROUTING_PARAMS:
            raise HoneycombError("The parameter {0} is invalid.".format(param))

        path = ("interfaces", ("interface", "name", interface), "v3po:routing",
                param)
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def create_vxlan_interface(node, interface, **kwargs):
        """Create a new VxLAN interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.VXLAN_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        new_vx_lan = {
            "name": interface,
            "type": "v3po:vxlan-tunnel",
            "v3po:vxlan": {}
        }
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.VXLAN_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            new_vx_lan["v3po:vxlan"][param] = value

        path = ("interfaces", "interface")
        vx_lan_structure = [new_vx_lan, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, vx_lan_structure)

    @staticmethod
    def delete_interface(node, interface):
        """Delete an interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If it is not possible to get information about
        interfaces or it is not possible to delete the interface.
        """

        path = ("interfaces", ("interface", "name", interface))

        status_code, resp = HcUtil.\
            get_honeycomb_data(node, "config_vpp_interfaces")
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "Not possible to get configuration information about the "
                "interfaces. Status code: {0}.".format(status_code))

        new_data = HcUtil.remove_item(resp, path)
        status_code, resp = HcUtil.\
            put_honeycomb_data(node, "config_vpp_interfaces", new_data)
        if status_code != HTTPCodes.OK:
            raise HoneycombError("Not possible to remove interface {0}. "
                                 "Status code: {1}.".
                                 format(interface, status_code))
        return resp

    @staticmethod
    def configure_interface_vxlan(node, interface, **kwargs):
        """Configure VxLAN on the interface.

        The keyword configures VxLAN parameters on the given interface. The type
        of interface must be set to "v3po:vxlan-tunnel".
        The new VxLAN parameters overwrite the current configuration. If a
        parameter in new configuration is missing, it is removed from VxLAN
        configuration.
        If the dictionary kwargs is empty, VxLAN configuration is removed.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.VXLAN_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        vx_lan_structure = dict()
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.VXLAN_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            vx_lan_structure[param] = value

        path = ("interfaces", ("interface", "name", interface), "v3po:vxlan")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, vx_lan_structure)

    @staticmethod
    def configure_interface_l2(node, interface, param, value):
        """Configure the L2 parameters of interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param param: Parameter to configure (set, change, remove)
        :param value: The value of parameter. If None, the parameter will be
        removed.
        :type node: dict
        :type interface: str
        :type param: str
        :type value: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        if param not in InterfaceKeywords.L2_PARAMS:
            raise HoneycombError("The parameter {0} is invalid.".format(param))
        path = ("interfaces", ("interface", "name", interface), "v3po:l2",
                param)
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, value)

    @staticmethod
    def create_tap_interface(node, interface, **kwargs):
        """Create a new TAP interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.TAP_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        new_tap = {
            "name": interface,
            "type": "v3po:tap",
            "v3po:tap": {}
        }
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.TAP_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            new_tap["v3po:tap"][param] = value

        path = ("interfaces", "interface")
        new_tap_structure = [new_tap, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, new_tap_structure)

    @staticmethod
    def configure_interface_tap(node, interface, **kwargs):
        """Configure TAP on the interface.

        The keyword configures TAP parameters on the given interface. The type
        of interface must be set to "v3po:tap".
        The new TAP parameters overwrite the current configuration. If a
        parameter in new configuration is missing, it is removed from TAP
        configuration.
        If the dictionary kwargs is empty, TAP configuration is removed.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.TAP_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        tap_structure = dict()
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.TAP_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            tap_structure[param] = value

        path = ("interfaces", ("interface", "name", interface), "v3po:tap")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, tap_structure)

    @staticmethod
    def configure_interface_vhost_user(node, interface, **kwargs):
        """Configure vhost-user on the interface.

        The keyword configures vhost-user parameters on the given interface.
        The type of interface must be set to "v3po:vhost-user".
        The new vhost-user parameters overwrite the current configuration. If a
        parameter in new configuration is missing, it is removed from vhost-user
        configuration.
        If the dictionary kwargs is empty, vhost-user configuration is removed.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.VHOST_USER_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        vhost_structure = dict()
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.VHOST_USER_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            vhost_structure[param] = value

        path = ("interfaces", ("interface", "name", interface),
                "v3po:vhost-user")
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, vhost_structure)

    @staticmethod
    def create_vhost_user_interface(node, interface, **kwargs):
        """Create a new vhost-user interface.

        :param node: Honeycomb node.
        :param interface: The name of interface.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.VHOST_USER_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        """

        new_vhost = {
            "name": interface,
            "type": "v3po:vhost-user",
            "v3po:vhost-user": {}
        }
        for param, value in kwargs.items():
            if param not in InterfaceKeywords.VHOST_USER_PARAMS:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
            new_vhost["v3po:vhost-user"][param] = value

        path = ("interfaces", "interface")
        new_vhost_structure = [new_vhost, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, new_vhost_structure)

    @staticmethod
    def create_sub_interface(node, super_interface, match, tags=None, **kwargs):
        """Create a new sub-interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param match: Match type. The valid values are defined in
        InterfaceKeywords.SUB_IF_MATCH.
        :param tags: List of tags.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.SUB_IF_PARAMS.
        :type node: dict
        :type super_interface: str
        :type match: str
        :type tags: list
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the parameter is not valid.
        :raises KeyError: If the parameter 'match' is invalid.
        """

        match_type = {
            "default":
                {"default": {}},
            "untagged":
                {"untagged": {}},
            "vlan-tagged":
                {"vlan-tagged": {"match-exact-tags": "false"}},
            "vlan-tagged-exact-match":
                {"vlan-tagged": {"match-exact-tags": "true"}}
        }

        new_sub_interface = {
            "tags": {
                "tag": []
            },
        }

        for param, value in kwargs.items():
            if param in InterfaceKeywords.SUB_IF_PARAMS:
                new_sub_interface[param] = value
            else:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
        try:
            new_sub_interface["match"] = match_type[match]
        except KeyError:
            raise HoneycombError("The value '{0}' of parameter 'match' is "
                                 "invalid.".format(match))

        if tags:
            new_sub_interface["tags"]["tag"].extend(tags)

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                "sub-interface")
        new_sub_interface_structure = [new_sub_interface, ]
        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, new_sub_interface_structure)

    @staticmethod
    def get_sub_interface_oper_data(node, super_interface, identifier):
        """Retrieves sub-interface operational data using Honeycomb API.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :return: Sub-interface operational data.
        :rtype: dict
        :raises HoneycombError: If there is no sub-interface with the given ID.
        """

        if_data = InterfaceKeywords.get_interface_oper_data(node,
                                                            super_interface)
        for sub_if in if_data["vpp-vlan:sub-interfaces"]["sub-interface"]:
            if str(sub_if["identifier"]) == str(identifier):
                return sub_if

        raise HoneycombError("The interface {0} does not have sub-interface "
                             "with ID {1}".format(super_interface, identifier))

    @staticmethod
    def remove_all_sub_interfaces(node, super_interface):
        """Remove all sub-interfaces from the given interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :type node: dict
        :type super_interface: str
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces")

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, {})

    @staticmethod
    def set_sub_interface_state(node, super_interface, identifier, state):
        """Set the administrative state of sub-interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :param state: Required sub-interface state - up or down.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :type state: str
        :return: Content of response.
        :rtype: bytearray
        """

        intf_state = {"up": "true",
                      "down": "false"}

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                ("sub-interface", "identifier", identifier),
                "enabled")

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, intf_state[state])

    @staticmethod
    def add_bridge_domain_to_sub_interface(node, super_interface, identifier,
                                           config):
        """Add a sub-interface to a bridge domain and set its parameters.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :param config: Bridge domain configuration.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :type config: dict
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                ("sub-interface", "identifier", int(identifier)),
                "l2")

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, config)

    @staticmethod
    def get_bd_data_from_sub_interface(node, super_interface, identifier):
        """Get the operational data about the bridge domain from sub-interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :return: Operational data about the bridge domain.
        :rtype: dict
        :raises HoneycombError: If there is no sub-interface with the given ID.
        """

        try:
            bd_data = InterfaceKeywords.get_sub_interface_oper_data(
                node, super_interface, identifier)["l2"]
            return bd_data
        except KeyError:
            raise HoneycombError("The operational data does not contain "
                                 "information about a bridge domain.")

    @staticmethod
    def configure_tag_rewrite(node, super_interface, identifier, config):
        """Add / change / disable vlan tag rewrite on a sub-interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :param config: Rewrite tag configuration.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :type config: dict
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                ("sub-interface", "identifier", int(identifier)),
                "l2",
                "rewrite")

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, config)

    @staticmethod
    def get_tag_rewrite_oper_data(node, super_interface, identifier):
        """Get the operational data about tag rewrite.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :return: Operational data about tag rewrite.
        :rtype: dict
        :raises HoneycombError: If there is no sub-interface with the given ID.
        """

        try:
            tag_rewrite = InterfaceKeywords.get_sub_interface_oper_data(
                node, super_interface, identifier)["l2"]["rewrite"]
            return tag_rewrite
        except KeyError:
            raise HoneycombError("The operational data does not contain "
                                 "information about the tag-rewrite.")

    @staticmethod
    def add_ipv4_address_to_sub_interface(node, super_interface, identifier,
                                          ip_addr, network):
        """Add an ipv4 address to the specified sub-interface, with the provided
        netmask or network prefix length. Any existing ipv4 addresses on the
        sub-interface will be replaced.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :param ip_addr: IPv4 address to be set.
        :param network: Network mask or network prefix length.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :type ip_addr: str
        :type network: str or int
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the provided netmask or prefix is not valid.
        """

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                ("sub-interface", "identifier", int(identifier)),
                "ipv4")

        if isinstance(network, basestring):
            address = {"address": [{"ip": ip_addr, "netmask": network}, ]}

        elif isinstance(network, int) and 0 < network < 33:
            address = {"address": [{"ip": ip_addr, "prefix-length": network}, ]}

        else:
            raise HoneycombError("{0} is not a valid netmask or prefix length."
                                 .format(network))

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, address)

    @staticmethod
    def remove_all_ipv4_addresses_from_sub_interface(node, super_interface, # pylint: disable=invalid-name
                                                     identifier):
        """Remove all ipv4 addresses from the specified sub-interface.

        :param node: Honeycomb node.
        :param super_interface: Super interface.
        :param identifier: The ID of sub-interface.
        :type node: dict
        :type super_interface: str
        :type identifier: int
        :return: Content of response.
        :rtype: bytearray
        """

        path = ("interfaces",
                ("interface", "name", super_interface),
                "vpp-vlan:sub-interfaces",
                ("sub-interface", "identifier", int(identifier)),
                "ipv4", "address")

        return InterfaceKeywords._set_interface_properties(
            node, super_interface, path, None)

    @staticmethod
    def compare_data_structures(data, ref, ignore=(), list_order=True):
        """Checks if data obtained from UUT is as expected.

        :param data: Data to be checked.
        :param ref: Referential data used for comparison.
        :param ignore: Dictionary keys to be ignored.
        :param list_order: Whether to consider the order of list items\
        in comparison.
        :type data: dict
        :type ref: dict
        :type ignore: iterable
        :type list_order: bool

        :raises HoneycombError: If a parameter from referential data is not
        present in operational data or if it has different value.
        """

        errors = ""

        for key, item in ref.items():
            if key in ignore:
                continue
            try:
                if data[key] != item:
                    if not list_order and sorted(data[key]) == sorted(item):
                        pass
                    else:
                        errors += ("\nThe value of parameter '{0}' is "
                                   "incorrect. It should be "
                                   "'{1}' but it is '{2}'".
                                   format(key, item, data[key]))
            except KeyError:
                errors += ("\nThe parameter '{0}' is not present in "
                           "operational data".format(key))

        if errors:
            raise HoneycombError(errors)

    @staticmethod
    def compare_interface_lists(list1, list2):
        """Compare provided lists of interfaces by name.

        :param list1: List of interfaces.
        :param list2: List of interfaces.
        :type list1: list
        :type list2: list
        :raises HoneycombError: If an interface exists in only one of the lists.
        """

        ignore = ["vx_tunnel0", "vxlan_gpe_tunnel0"]
        # these have no equivalent in config data and no effect on VPP

        names1 = [x['name'] for x in list1]
        names2 = [x['name'] for x in list2]

        for name in names1:
            if name not in names2 and name not in ignore:
                raise HoneycombError("Interface {0} not present in list {1}"
                                     .format(name, list2))
        for name in names2:
            if name not in names1 and name not in ignore:
                raise HoneycombError("Interface {0} not present in list {1}"
                                     .format(name, list1))

    @staticmethod
    def create_vxlan_gpe_interface(node, interface, **kwargs):
        """Create a new VxLAN GPE interface.

        :param node: Honeycomb node.
        :param interface: The name of interface to be created.
        :param kwargs: Parameters and their values. The accepted parameters are
        defined in InterfaceKeywords.VXLAN_GPE_PARAMS.
        :type node: dict
        :type interface: str
        :type kwargs: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If a parameter in kwargs is not valid.
        """

        new_vxlan_gpe = {
            "name": interface,
            "type": "v3po:vxlan-gpe-tunnel",
            "v3po:vxlan-gpe": {}
        }
        for param, value in kwargs.items():
            if param in InterfaceKeywords.INTF_PARAMS:
                new_vxlan_gpe[param] = value
            elif param in InterfaceKeywords.VXLAN_GPE_PARAMS:
                new_vxlan_gpe["v3po:vxlan-gpe"][param] = value
            else:
                raise HoneycombError("The parameter {0} is invalid.".
                                     format(param))
        path = ("interfaces", "interface")
        vxlan_gpe_structure = [new_vxlan_gpe, ]
        return InterfaceKeywords._set_interface_properties(
            node, interface, path, vxlan_gpe_structure)

    @staticmethod
    def enable_acl_on_interface(node, interface, table_name):
        """Enable ACL on the given interface.

        :param node: Honeycomb node.
        :param interface: The interface where the ACL will be enabled.
        :param table_name: Name of the classify table.
        :type node: dict
        :type interface: str
        :type table_name: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the configuration of interface is not
        successful.
        """

        interface = interface.replace("/", "%2F")

        data = {
            "v3po:acl": {
                "ingress": {
                    "ip4-acl": {
                        "classify-table": table_name
                    },
                    "l2-acl": {
                        "classify-table": table_name
                    }
                }
            }
        }

        path = "/interface/" + interface + "/v3po:acl"
        status_code, resp = HcUtil.\
            put_honeycomb_data(node, "config_vpp_interfaces", data, path,
                               data_representation=DataRepresentation.JSON)
        if status_code not in (HTTPCodes.OK, HTTPCodes.ACCEPTED):
            raise HoneycombError(
                "The configuration of interface '{0}' was not successful. "
                "Status code: {1}.".format(interface, status_code))
        return resp

    @staticmethod
    def disable_acl_on_interface(node, interface):
        """Disable ACL on the given interface.

        :param node: Honeycomb node.
        :param interface: The interface where the ACL will be disabled.
        :type node: dict
        :type interface: str
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the configuration of interface is not
        successful.
        """

        interface = interface.replace("/", "%2F")

        path = "/interface/" + interface + "/v3po:acl"

        status_code, resp = HcUtil.\
            delete_honeycomb_data(node, "config_vpp_interfaces", path)

        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "The configuration of interface '{0}' was not successful. "
                "Status code: {1}.".format(interface, status_code))
        return resp

    @staticmethod
    def create_pbb_sub_interface(node, intf, sub_if_id, params):
        """Creates a PBB sub-interface on the given interface and sets its
        parameters.

        :param node: Honeycomb node.
        :param intf: The interface where PBB sub-interface will be configured.
        :param sub_if_id: Sub-interface ID.
        :param params: Configuration parameters of the sub-interface to be
        created.
        :type node: dict
        :type intf: str
        :type sub_if_id: str or int
        :type params: dict
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the configuration of sub-interface is not
        successful.
        """

        interface = intf.replace("/", "%2F")
        path = "/interface/{0}/sub-interfaces:sub-interfaces/sub-interface/" \
               "{1}".format(interface, sub_if_id)
        status_code, resp = HcUtil. \
            put_honeycomb_data(node, "config_vpp_interfaces", params, path,
                               data_representation=DataRepresentation.JSON)
        if status_code not in (HTTPCodes.OK, HTTPCodes.ACCEPTED):
            raise HoneycombError(
                "The configuration of PBB sub-interface '{0}' was not "
                "successful. Status code: {1}.".format(intf, status_code))
        return resp

    @staticmethod
    def delete_pbb_sub_interface(node, intf, sub_if_id):
        """Deletes the given PBB sub-interface.

        :param node: Honeycomb node.
        :param intf: The interface where PBB sub-interface will be deleted.
        :param sub_if_id: ID of the PBB sub-interface to be deleted.
        :type node: dict
        :type intf: str
        :type sub_if_id: str or int
        :return: Content of response.
        :rtype: bytearray
        :raises HoneycombError: If the removal of sub-interface is not
        successful.
        """

        interface = intf.replace("/", "%2F")
        path = "/interface/{0}/sub-interfaces:sub-interfaces/sub-interface/" \
               "{1}".format(interface, sub_if_id)

        status_code, resp = HcUtil. \
            delete_honeycomb_data(node, "config_vpp_interfaces", path)
        if status_code != HTTPCodes.OK:
            raise HoneycombError(
                "The removal of pbb sub-interface '{0}' was not successful. "
                "Status code: {1}.".format(intf, status_code))
        return resp

    @staticmethod
    def get_pbb_sub_interface_oper_data(node, intf, sub_if_id):
        """Retrieves PBB sub-interface operational data from Honeycomb.

        :param node: Honeycomb node.
        :param intf: The interface where PBB sub-interface is located.
        :param sub_if_id: ID of the PBB sub-interface.
        :type node: dict
        :type intf: str
        :type sub_if_id: str or int
        :return: PBB sub-interface operational data.
        :rtype: dict
        :raises HoneycombError: If the removal of sub-interface is not
        successful.
        """

        interface = "{0}.{1}".format(intf, sub_if_id)
        return InterfaceKeywords.get_interface_oper_data(node, interface)

    @staticmethod
    def check_disabled_interface(node, interface):
        """Retrieves list of disabled interface indices from Honeycomb,
        and matches with the provided interface by index.

        :param node: Honeycomb node.
        :param interface: Index number of an interface on the node.
        :type node: dict
        :type interface: int
        :return: True if the interface exists in disabled interfaces.
        :rtype: bool
        :raises HoneycombError: If the interface is not present
         in retrieved list of disabled interfaces.
         """
        data = InterfaceKeywords.get_disabled_interfaces_oper_data(node)
        # decrement by one = conversion from HC if-index to VPP sw_if_index
        interface -= 1

        for item in data:
            if item["index"] == interface:
                return True
        raise HoneycombError("Interface index {0} not present in list"
                             " of disabled interfaces.".format(interface))