-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathietf-ntp.yang
1092 lines (1037 loc) · 29.5 KB
/
ietf-ntp.yang
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
module ietf-ntp {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-ntp";
prefix "ntp";
import ietf-yang-types {
prefix "yang";
reference "RFC 6991";
}
import ietf-inet-types {
prefix "inet";
reference "RFC 6991";
}
import ietf-interfaces {
prefix "if";
reference "RFC 8343";
}
import iana-crypt-hash {
prefix "ianach";
reference "RFC 7317";
}
import ietf-key-chain {
prefix "key-chain";
reference "RFC 8177";
}
import ietf-access-control-list {
prefix "acl";
reference "RFC XXXX";
}
/* Note: The RFC Editor will replace XXXX with the number assigned
to the RFC once draft-ietf-netmod-acl-model becomes an RFC.*/
import ietf-routing-types {
prefix "rt-types";
reference "RFC 8294";
}
organization
"IETF NTP (Network Time Protocol) Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/ntp/>
WG List: <mailto: ntpwg@lists.ntp.org
Editor: Eric Wu
<mailto:eric.wu@huawei.com>
Editor: Anil Kumar S N
<mailto:anil.ietf@gmail.com>
Editor: Yi Zhao
<mailto:yi.z.zhao@ericsson.com>
Editor: Dhruv Dhody
<mailto:dhruv.ietf@gmail.com>
Editor: Ankit Kumar Sinha
<mailto:ankit.ietf@gmail.com>";
description
"This document defines a YANG data model for Network Time Protocol
(NTP) implementations. The data model includes configuration data
and state data.
Copyright (c) 2018 IETF Trust and the persons identified
as authors of the code. All rights reserved.
Redistribution and use in source and binary forms,
with or without modification, is permitted pursuant to,
and subject to the license terms contained in, the
Simplified BSD License set forth in Section 4.c of the
IETF Trust's Legal Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC YYYY;
see the RFC itself for full legal notices.";
revision 2018-12-17 {
description
"Updated revision.";
reference
"RFC YYYY: A YANG Data Model for NTP.";
}
/* Note: The RFC Editor will replace YYYY with the number assigned
to this document once it becomes an RFC.*/
/* Typedef Definitions */
typedef ntp-stratum {
type uint8 {
range "1..16";
}
description
"The level of each server in the hierarchy is defined by
a stratum. Primary servers are assigned with stratum
one; secondary servers at each lower level are assigned with
one stratum greater than the preceding level";
}
typedef ntp-version {
type uint8 {
range "1..4";
}
default "3";
description
"The current NTP version supported by corresponding
association.";
}
typedef ntp-minpoll {
type uint8 {
range "4..17";
}
default "6";
description
"The minimum poll exponent for this NTP association.";
}
typedef ntp-maxpoll {
type uint8 {
range "4..17";
}
default "10";
description
"The maximum poll exponent for this NTP association.";
}
typedef access-mode {
type enumeration {
enum peer {
value "0";
description
"Enables the full access authority. Both time
request and control query can be performed
on the local NTP service, and the local clock
can be synchronized with the remote server.";
}
enum server {
value "1";
description
"Enables the server access and query.
Both time requests and control query can be
performed on the local NTP service, but the
local clock cannot be synchronized with the
remote server.";
}
enum synchronization {
value "2";
description
"Enables the server to access.
Only time request can be performed on the
local NTP service.";
}
enum query {
value "3";
description
"Enables the maximum access limitation.
Control query can be performed only on the
local NTP service.";
}
}
description
"This defines NTP access modes.";
}
typedef unicast-configuration-type {
type enumeration {
enum server {
value "0";
description
"Use client association mode. This device
will not provide synchronization to the
configured NTP server.";
}
enum peer {
value "1";
description
"Use symmetric active association mode.
This device may provide synchronization
to the configured NTP server.";
}
}
description
"This defines NTP unicast mode of operation.";
}
typedef association-mode {
type enumeration {
enum client {
value "0";
description
"Use client association mode(mode 3).
This device will not provide synchronization
to the configured NTP server.";
}
enum active {
value "1";
description
"Use symmetric active association mode(mode 1).
This device may synchronize with its NTP peer,
or provide synchronization to configured NTP peer.";
}
enum passive {
value "2";
description
"Use symmetric passive association mode(mode 2).
This device has learned this association dynamically.
This device may synchronize with its NTP peer.";
}
enum broadcast {
value "3";
description
"Use broadcast mode(mode 5).
This mode defines that its either working
as broadcast-server or multicast-server.";
}
enum broadcast-client {
value "4";
description
"This mode defines that its either working
as broadcast-client or multicast-client.";
}
}
description
"The NTP association modes.";
}
typedef ntp-clock-status {
type enumeration {
enum synchronized {
value "0";
description
"Indicates that the local clock has been
synchronized with an NTP server or
the reference clock.";
}
enum unsynchronized {
value "1";
description
"Indicates that the local clock has not been
synchronized with any NTP server.";
}
}
description
"This defines NTP clock status.";
}
typedef ntp-sync-state {
type enumeration {
enum clock-not-set {
value "0";
description
"Indicates the clock is not updated.";
}
enum freq-set-by-cfg {
value "1";
description
"Indicates the clock frequency is set by
NTP configuration.";
}
enum clock-set {
value "2";
description
"Indicates the clock is set.";
}
enum freq-not-determined {
value "3";
description
"Indicates the clock is set but the frequency
is not determined.";
}
enum clock-synchronized {
value "4";
description
"Indicates that the clock is synchronized";
}
enum spike {
value "5";
description
"Indicates a time difference of more than 128
milliseconds is detected between NTP server
and client clock. The clock change will take
effect in XXX seconds.";
}
}
description
"This defines NTP clock sync states.";
}
/* features */
feature ntp-port {
description
"Support for NTP port configuration";
reference "RFC1305 - 3.2.7 Parameters";
}
feature authentication {
description
"Support for NTP symmetric key authentication";
reference "RFC1305 - 3.2.6 Authentication Variables";
}
feature access-rules {
description
"Support for NTP access control";
reference "RFC1305 - 3.6 Access Control Issues";
}
feature unicast-configuration {
description
"Support for NTP client/server or active/passive
in unicast";
reference "RFC1305 - 3.3 Modes of Operation";
}
feature broadcast-server {
description
"Support for broadcast server";
reference "RFC1305 - 3.3 Modes of Operation";
}
feature broadcast-client {
description
"Support for broadcast client";
reference "RFC1305 - 3.3 Modes of Operation";
}
feature multicast-server {
description
"Support for multicast server";
reference "RFC1305 - 3.3 Modes of Operation";
}
feature multicast-client {
description
"Support for multicast client";
reference "RFC1305 - 3.3 Modes of Operation";
}
feature manycast-server {
description
"Support for manycast server";
reference "RFC5905 - 3.1 Dynamic Server Discovery";
}
feature manycast-client {
description
"Support for manycast client";
reference "RFC5905 - 3.1 Dynamic Server Discovery";
}
/* Groupings */
grouping authentication-key {
description
"To define an authentication key for a Network Time
Protocol (NTP) time source.";
leaf key-id {
type uint32 {
range "1..max";
}
description
"Authentication key identifier.";
}
leaf algorithm {
type identityref {
base key-chain:crypto-algorithm;
}
description
"Authentication algorithm.";
}
leaf key {
type ianach:crypt-hash;
description
"The key";
}
leaf istrusted {
type boolean;
description
"Key-id is trusted or not";
}
}
grouping authentication {
description
"Authentication.";
choice authentication-type {
description
"Type of authentication.";
case symmetric-key {
leaf key-id {
type leafref {
path "/ntp:ntp/ntp:authentication/"
+ "ntp:authentication-keys/ntp:key-id";
}
description
"Authentication key id referenced in this
association.";
}
}
}
}
grouping statistics {
description
"NTP packet statistic.";
leaf packet-sent {
type yang:counter32;
description
"The total number of NTP packets delivered to the
transport service by this NTP entity for this
association.
Discountinuities in the value of this counter can occur
upon cold start or reinitialization of the NTP entity, the
management system and at other times as indicated by
discontinuities in the value of sysUpTime.";
}
leaf packet-sent-fail {
type yang:counter32;
description
"The number of times NTP packets sending failed.";
}
leaf packet-received {
type yang:counter32;
description
"The total number of NTP packets delivered to the
NTP entity from this association.
Discountinuities in the value of this counter can occur
upon cold start or reinitialization of the NTP entity, the
management system and at other times as indicated by
discontinuities in the value of sysUpTime.";
}
leaf packet-dropped {
type yang:counter32;
description
"The total number of NTP packets that were delivered
to this NTP entity from this association and this entity
was not able to process due to an NTP protocol error.
Discountinuities in the value of this counter can occur
upon cold start or reinitialization of the NTP entity, the
management system and at other times as indicated by
discontinuities in the value of sysUpTime.";
}
}
grouping common-attributes {
description
"NTP common attributes for configuration.";
leaf minpoll {
type ntp-minpoll;
description
"The minimum poll interval used in this association.";
}
leaf maxpoll {
type ntp-maxpoll;
description
"The maximum poll interval used in this association.";
}
leaf port {
if-feature ntp-port;
type inet:port-number {
range "123 | 1025..max";
}
default "123";
description
"Specify the port used to send NTP packets.";
}
leaf version {
type ntp-version;
description
"NTP version.";
}
}
grouping association-ref {
description
"Reference to NTP association mode";
leaf associations-address {
type leafref {
path "/ntp:ntp/ntp:associations/ntp:address";
}
description
"Indicates the association's address
which result in clock synchronization.";
}
leaf associations-local-mode {
type leafref {
path "/ntp:ntp/ntp:associations/ntp:local-mode";
}
description
"Indicates the association's local-mode
which result in clock synchronization.";
}
leaf associations-isconfigured {
type leafref {
path "/ntp:ntp/ntp:associations/"
+ "ntp:isconfigured";
}
description
"The association was configured or dynamic
which result in clock synchronization.";
}
}
/* Configuration data nodes */
container ntp {
presence
"NTP is enabled and system should attempt to
synchronize the system clock with an NTP server
from the 'ntp/associations' list.";
description
"Configuration parameters for NTP.";
leaf port {
if-feature ntp-port;
type inet:port-number {
range "123 | 1025..max";
}
default "123";
description
"Specify the port used to send and receive NTP packets.";
}
container refclock-master {
presence
"NTP master clock is enabled.";
description
"Configures the local clock of this device as NTP server.";
leaf master-stratum {
type ntp-stratum;
default "16";
description
"Stratum level from which NTP
clients get their time synchronized.";
}
}
container authentication {
description
"Configuration of authentication.";
leaf auth-enabled {
type boolean;
default false;
description
"Controls whether NTP authentication is enabled
or disabled on this device.";
}
list authentication-keys {
key "key-id";
uses authentication-key;
description
"List of authentication keys.";
}
}
container access-rules {
description
"Configuration to control access to NTP service
by using NTP access-group feature.
The access-mode identifies how the acl is
applied with NTP.";
list access-rule {
key "access-mode";
description
"List of access rules.";
leaf access-mode {
type access-mode;
description
"NTP access mode. The defination of each possible values:
peer(0): Both time request and control query can be
performed.
server(1): Enables the server access and query.
synchronization(2): Enables the server access only.
query(3): Enables control query only.";
}
leaf acl {
type leafref {
path "/acl:acls/acl:acl/acl:name";
}
description
"Control access configuration to be used.";
}
reference
"RFC 1305";
}
}
container clock-state {
config "false";
description
"Clock operational state of the NTP.";
container system-status {
description
"System status of NTP.";
leaf clock-state {
type ntp-clock-status;
mandatory true;
description
"The state of system clock. The definition of each
possible value is:
synchronized(0): Indicates local clock is synchronized.
unsynchronized(1): Indicates local clock is not
synchronized.";
}
leaf clock-stratum {
type ntp-stratum;
mandatory true;
description
"The NTP entity's own stratum value. Should be a stratum
of syspeer + 1 (or 16 if no syspeer).";
}
leaf clock-refid {
type union {
type inet:ipv4-address;
type binary {
length "4";
}
type string {
length "4";
}
}
mandatory true;
description
"IPv4 address or first 32 bits of the MD5 hash of
the IPv6 address or reference clock of the peer to
which clock is synchronized.";
}
uses association-ref {
description
"Reference to Association.";
}
leaf nominal-freq {
type decimal64 {
fraction-digits 4;
}
units Hz;
mandatory true;
description
"The nominal frequency of the
local clock.";
}
leaf actual-freq {
type decimal64 {
fraction-digits 4;
}
units Hz;
mandatory true;
description
"The actual frequency of the
local clock.";
}
leaf clock-precision {
type uint8;
units Hz;
mandatory true;
description
"Clock precision of this system in integer format
(prec=2^(-n)). A value of 5 would mean 2^-5 = 31.25 ms.";
}
leaf clock-offset {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"The time offset to the current selected reference time
source e.g., '0.032' or '1.232'.";
}
leaf root-delay {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"Total delay along the path to root clock.";
}
leaf root-dispersion {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"The dispersion between the local clock
and the root clock, e.g., '6.927'.";
}
leaf reference-time {
type yang:date-and-time;
description
"The reference timestamp.";
}
leaf sync-state {
type ntp-sync-state;
mandatory true;
description
"The synchronization status of
the local clock.";
}
}
}
list unicast-configuration {
key "address type";
description
"List of NTP unicast-configurations.";
leaf address {
type inet:host;
description
"Address of this association.";
}
leaf type {
type unicast-configuration-type;
description
"Use client association mode. This device
will not provide synchronization to the
configured NTP server.";
}
container authentication{
description
"Authentication used for this association.";
uses authentication;
}
leaf prefer {
type boolean;
default "false";
description
"Whether this association is preferred or not.";
}
leaf burst {
type boolean;
default "false";
description
"If set, a series of packets are sent instead of a single
packet within each synchronization interval to achieve faster
synchronization.";
}
leaf iburst {
type boolean;
default "false";
description
"If set, a series of packets are sent instead of a single
packet within the initial synchronization interval to achieve
faster initial synchronization.";
}
leaf source {
type if:interface-ref;
description
"The interface whose IP address is used by this association
as the source address.";
}
uses common-attributes {
description
"Common attributes like port, version, min and max
poll.";
}
}
list associations {
key "address local-mode isconfigured";
config "false";
description
"List of NTP associations. Here address, local-mode
and isconfigured is required to uniquely identify
a particular association. Lets take following examples -
1) If RT1 acting as broadcast server,
and RT2 acting as broadcast client, then RT2
will form dynamic association with address as RT1,
local-mode as client and isconfigured as false.
2) When RT2 is configured
with unicast-server RT1, then RT2 will form
association with address as RT1, local-mode as client
and isconfigured as true.
Thus all 3 leaves are needed as key to unique identify
the association.";
leaf address {
type inet:host;
description
"The address of this association. Represents the IP
address of a unicast/multicast/broadcast address.";
}
leaf local-mode {
type association-mode;
description
"Local mode of this NTP association.";
}
leaf isconfigured {
type boolean;
description
"Indicates if this association is configured or
dynamically learned.";
}
leaf stratum {
type ntp-stratum;
description
"The association stratum value.";
}
leaf refid {
type union {
type inet:ipv4-address;
type binary {
length "4";
}
type string {
length "4";
}
}
description
"The refclock driver ID, if available.
-- a refclock driver ID like '127.127.1.0' for local clock
sync
-- uni/multi/broadcast associations will look like '20.1.1.1'
-- sync with primary source will look like 'DCN', 'NIST',
'ATOM'";
reference
"RFC 1305";
}
leaf authentication{
type leafref {
path "/ntp:ntp/ntp:authentication/"
+ "ntp:authentication-keys/ntp:key-id";
}
description
"Authentication Key used for this association.";
}
leaf prefer {
type boolean;
default "false";
description
"Indicates if this association is preferred.";
}
leaf peer-interface {
type if:interface-ref;
description
"The interface which is used for communication.";
}
uses common-attributes {
description
"Common attributes like port, version, min and
max poll.";
}
leaf reach {
type uint8;
description
"The reachability of the configured
server or peer.";
}
leaf unreach {
type uint8;
description
"The unreachability of the configured
server or peer.";
}
leaf poll {
type uint8;
units seconds;
description
"The polling interval for current association";
}
leaf now {
type uint32;
units seconds;
description
"The time since the NTP packet was
not received or last synchronized.";
}
leaf offset {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"The offset between the local clock
and the peer clock, e.g., '0.032' or '1.232'";
}
leaf delay {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"The network delay between the local clock
and the peer clock.";
}
leaf dispersion {
type decimal64 {
fraction-digits 3;
}
units milliseconds;
description
"The root dispersion between the local clock
and the peer clock.";
}
leaf originate-time {
type yang:date-and-time;
description
"This is the local time, in timestamp format,
when latest NTP packet was sent to peer(T1).";
reference
"RFC 1305";
}
leaf receive-time {
type yang:date-and-time;
description
"This is the local time, in timestamp format,
when latest NTP packet arrived at peer(T2).
If the peer becomes unreachable the value is set to zero.";
reference
"RFC 1305";
}
leaf transmit-time {
type yang:date-and-time;
description
"This is the local time, in timestamp format,
at which the NTP packet departed the peer(T3).
If the peer becomes unreachable the value is set to zero.";
reference
"RFC 1305";
}
leaf input-time {
type yang:date-and-time;
description
"This is the local time, in timestamp format,
when the latest NTP message from the peer arrived(T4).
If the peer becomes unreachable the value is set to zero.";
reference
"RFC 1305";
}
container ntp-statistics {
description
"Per Peer packet send and receive statistics.";
uses statistics {
description
"NTP send and receive packet statistics.";
}
}
}
container interfaces {
description
"Configuration parameters for NTP interfaces.";
list interface {
key "name";
description
"List of interfaces.";
leaf name {
type if:interface-ref;
description
"The interface name.";
}
container broadcast-server {
presence
"NTP broadcast-server is configured";
description
"Configuration of broadcast server.";
leaf ttl {
type uint8;
description
"Specifies the time to live (TTL) for a
broadcast packet.";
}
container authentication{
description
"Authentication used for this association.";
uses authentication;
}
uses common-attributes {
description
"Common attribute like port, version, min and
max poll.";
}
}
container broadcast-client {
presence
"NTP broadcast-client is configured.";
description
"Configuration of broadcast-client.";
}
list multicast-server {
key "address";
description
"Configuration of multicast server.";
leaf address {
type rt-types:ip-multicast-group-address;
description
"The IP address to send NTP multicast packets.";
}
leaf ttl {
type uint8;
description
"Specifies the time to live (TTL) for a
multicast packet.";
}
container authentication{
description
"Authentication used for this association.";