Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

  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
-- *********************************************************************
--
--    The Network Time Protocol Version 4
--    Management Information Base (MIB)
--
--    Authors: Heiko Gerstung (heiko.gerstung@meinberg.de)
--             Chris Elliott (chelliot@pobox.com)
--
--    for the Internet Engineering Task Force (IETF)
--    NTP Working Group (ntpwg)
--
--
-- *********************************************************************
--   Rev 1.00
--         Published as RFC 5907
--
-- *********************************************************************

NTPv4-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE , mib-2, Integer32, NOTIFICATION-TYPE,
    Unsigned32, Counter32, TimeTicks
        FROM SNMPv2-SMI -- RFC 2578
    MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
        FROM SNMPv2-CONF -- RFC 2580
    DisplayString, TEXTUAL-CONVENTION
        FROM SNMPv2-TC -- RFC 2579
    InetAddressType, InetAddress
        FROM INET-ADDRESS-MIB -- RFC 4001
    Utf8String
        FROM SYSAPPL-MIB; -- RFC 2287

ntpSnmpMIB MODULE-IDENTITY
    LAST-UPDATED "201005170000Z" -- May 17, 2010
    ORGANIZATION "The IETF NTP Working Group (ntpwg)"
    CONTACT-INFO
            "     WG Email: ntpwg@lists.ntp.isc.org
                  Subscribe:
                   https://lists.ntp.isc.org/mailman/listinfo/ntpwg

                  Heiko Gerstung
                  Meinberg Funkuhren Gmbh & Co. KG
                  Lange Wand 9
                  Bad Pyrmont  31812
                  Germany

                  Phone: +49 5281 9309 25
                  Email: heiko.gerstung@meinberg.de

                  Chris Elliott
                  1516 Kent St.
                  Durham, NC 27707
                  USA

                  Phone: +1-919-308-1216
                  Email: chelliot@pobox.com

                  Brian Haberman
                  11100 Johns Hopkins Road
                  Laurel, MD 20723
                  USA

                  Phone: +1-443-778-1319
                  Email: brian@innovationslab.net"
     DESCRIPTION
        "The Management Information Base for NTP time entities.

         Copyright (c) 2010 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)."

    REVISION     "201005170000Z"
    DESCRIPTION
        "This revision of the MIB module is published as RFC 5907."

    ::= { mib-2 197 }

ntpSnmpMIBObjects  OBJECT IDENTIFIER ::= { ntpSnmpMIB 1 }

-- MIB contains 6 groups

ntpEntInfo         OBJECT IDENTIFIER ::= { ntpSnmpMIBObjects 1 }
ntpEntStatus       OBJECT IDENTIFIER ::= { ntpSnmpMIBObjects 2 }
ntpAssociation     OBJECT IDENTIFIER ::= { ntpSnmpMIBObjects 3 }
ntpEntControl      OBJECT IDENTIFIER ::= { ntpSnmpMIBObjects 4 }
ntpEntNotifObjects OBJECT IDENTIFIER ::= { ntpSnmpMIBObjects 5 }

--
-- Textual Conventions
--

NtpStratum ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "d"
    STATUS      current
    DESCRIPTION
        "The NTP stratum, with 16 representing no stratum."
    SYNTAX      Unsigned32 (1..16)

NtpDateTime ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "4d:4d:4d.4d"
    STATUS      current
    DESCRIPTION
        "NTP date/time on the device, in 128-bit
         NTP date format.  If time is not syncronized, this
         field shall be a zero-length string.

         This trusted certificate (TC) is not to be used for objects
         that are used to set the time of the node querying this
         object.  NTP should be used for this -- or at least SNTP."
    REFERENCE "RFC 5905, section 6"
    SYNTAX      OCTET STRING (SIZE (0 | 16))

--
-- Section 1: General NTP Entity information objects
--            (relatively static information)
--

ntpEntSoftwareName OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The product name of the running NTP version, e.g., 'ntpd'."
    ::= { ntpEntInfo  1 }

ntpEntSoftwareVersion OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The software version of the installed NTP implementation
         as a full version string, e.g., 'ntpd-4.2.0b@1.1433 ...'"
    ::= { ntpEntInfo  2 }

ntpEntSoftwareVendor OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The vendor/author of the installed NTP version."
    ::= { ntpEntInfo  3 }

ntpEntSystemType OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "General hardware/os platform information,
         e.g., 'Linux 2.6.12 / x86'."
    -- freely configurable, default is OS Version / Hardware platform
    ::= { ntpEntInfo  4 }

ntpEntTimeResolution OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The time resolution in integer format, where the resolution
        is represented as divisions of a second, e.g., a value of 1000
        translates to 1.0 ms."
    ::= { ntpEntInfo  5 }

ntpEntTimePrecision OBJECT-TYPE
    SYNTAX      Integer32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The entity's precision in integer format, shows the precision.
         A value of -5 would mean 2^-5 = 31.25 ms."
    ::= { ntpEntInfo  6 }

ntpEntTimeDistance OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The distance from this NTP entity to the root time reference
        (stratum 0) source including the unit, e.g., '13.243 ms'."
    ::= { ntpEntInfo  7 }

--
-- Section 2: Current NTP status (dynamic information)
--

ntpEntStatusCurrentMode OBJECT-TYPE
    SYNTAX      INTEGER {
                            notRunning(1),
                            notSynchronized(2),
                            noneConfigured(3),
                            syncToLocal(4),
                            syncToRefclock(5),
                            syncToRemoteServer(6),
                            unknown(99)
                        }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The current mode of the NTP.  The definition of each possible
         value is:
            notRunning(1) - NTP is not running.
            notSynchronized(2) - NTP is not synchronized to any time
                                 source (stratum = 16).
            noneConfigured(3) - NTP is not synchronized and does not
                                have a reference configured
                                (stratum = 16).
            syncToLocal(4) - NTP is distributing time based on its
                             local clock (degraded accuracy and/or
                             reliability).
            syncToRefclock(5) - NTP is synchronized to a local
                                hardware refclock (e.g., GPS).
            syncToRemoteServer(6) - NTP is synchronized to a remote
                                    NTP server ('upstream' server).
            unknown(99) - The state of NTP is unknown."
    ::= { ntpEntStatus 1 }

ntpEntStatusStratum OBJECT-TYPE
    SYNTAX      NtpStratum
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The NTP entity's own stratum value.  Should be a stratum of
         syspeer + 1 (or 16 if no syspeer)."
    ::= { ntpEntStatus 2 }

ntpEntStatusActiveRefSourceId OBJECT-TYPE
    SYNTAX      Unsigned32 ( 0..99999 )
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The association ID of the current syspeer."
    ::= { ntpEntStatus 3 }

ntpEntStatusActiveRefSourceName OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The hostname/descriptive name of the current reference source
         selected as syspeer, e.g., 'ntp1.ptb.de' or 'GPS' or
         'DCFi', ..."
    ::= { ntpEntStatus 4 }

ntpEntStatusActiveOffset OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The time offset to the current selected reference time source
         as a string including unit, e.g., '0.032 ms' or '1.232 s'."
    ::= { ntpEntStatus 5 }

ntpEntStatusNumberOfRefSources OBJECT-TYPE
    SYNTAX      Unsigned32 (0..99)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of reference sources configured for NTP."
    ::= { ntpEntStatus 6 }

ntpEntStatusDispersion OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The root dispersion of the running NTP entity, e.g., '6.927'."
    ::= { ntpEntStatus 7 }

ntpEntStatusEntityUptime OBJECT-TYPE
    SYNTAX      TimeTicks
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The uptime of the NTP entity, (i.e., the time since ntpd was
         (re-)initialized not sysUptime!).  The time is represented in
         hundreds of seconds since Jan 1, 1970 (00:00:00.000) UTC."
    ::= { ntpEntStatus 8 }

ntpEntStatusDateTime OBJECT-TYPE
    SYNTAX      NtpDateTime
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The current NTP date/time on the device, in 128-bit
         NTP date format.  If time is not syncronized, this
         field shall be a zero-length string.

         This object can be used to timestamp events on this
         node and allow a management station to correlate
         different time objects.  For example, a management
         station could query this object and sysUpTime in
         the same operation to be able to relate sysUpTime
         to NTP time.

         This object is not to be used to set the time of
         the node querying this object.  NTP should be used
         for this -- or at least SNTP."
    REFERENCE "RFC 5905, section 6"
    ::= { ntpEntStatus 9 }

ntpEntStatusLeapSecond OBJECT-TYPE
    SYNTAX      NtpDateTime
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Date the next known leap second will occur.  If there is
         no leap second announced, then this object should be 0."
    ::= { ntpEntStatus 10 }

ntpEntStatusLeapSecDirection OBJECT-TYPE
    SYNTAX      Integer32 (-1..1)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Direction of next known leap second.  If there is no
         leap second announced, then this object should be 0."
    ::= { ntpEntStatus 11 }

ntpEntStatusInPkts OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages delivered to the
         NTP entity from the transport service.
         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."
    ::= { ntpEntStatus 12 }

ntpEntStatusOutPkts OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages delivered to the
         transport service by this NTP entity.
         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."
    ::= { ntpEntStatus 13 }

ntpEntStatusBadVersion OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages that were delivered
         to this NTP entity and were for an unsupported NTP
         version.
         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."
    ::= { ntpEntStatus 14 }

ntpEntStatusProtocolError OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages that were delivered
         to this NTP entity 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."
    ::= { ntpEntStatus 15 }

ntpEntStatusNotifications OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "notifications"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of SNMP notifications that this NTP
         entity has generated.
         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."
    ::= { ntpEntStatus 16 }

ntpEntStatPktModeTable OBJECT-TYPE
    SYNTAX           SEQUENCE OF NtpEntStatPktModeEntry
    MAX-ACCESS       not-accessible
    STATUS           current
    DESCRIPTION
        "The number of packets sent and received by packet mode.
         One entry per packet mode."
    ::= { ntpEntStatus 17 }

ntpEntStatPktModeEntry OBJECT-TYPE
    SYNTAX      NtpEntStatPktModeEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A statistical record of the number of packets sent and
         received for each packet mode."
    INDEX       { ntpEntStatPktMode }
    ::= { ntpEntStatPktModeTable 1 }

NtpEntStatPktModeEntry   ::= SEQUENCE {
        ntpEntStatPktMode              INTEGER,
        ntpEntStatPktSent              Counter32,
        ntpEntStatPktReceived          Counter32
}

ntpEntStatPktMode OBJECT-TYPE
    SYNTAX      INTEGER {
                    symetricactive(1),
                    symetricpassive(2),
                    client(3),
                    server(4),
                    broadcastserver(5),
                    broadcastclient(6)
                }
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The NTP packet mode."
    ::= { ntpEntStatPktModeEntry 1 }

ntpEntStatPktSent OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of NTP packets sent with this packet mode.
         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."
    ::= { ntpEntStatPktModeEntry 2 }

ntpEntStatPktReceived OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of NTP packets received with this packet mode.

         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."
    ::= { ntpEntStatPktModeEntry 3 }

--
-- Section 3: The status of all currently mobilized associations
--

ntpAssociationTable OBJECT-TYPE
    SYNTAX           SEQUENCE OF NtpAssociationEntry
    MAX-ACCESS       not-accessible
    STATUS           current
    DESCRIPTION
        "The table of currently mobilized associations."
    ::= { ntpAssociation 1 }

ntpAssociationEntry OBJECT-TYPE
    SYNTAX      NtpAssociationEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The table entry of currently mobilized associations."
    INDEX       { ntpAssocId }
    ::= { ntpAssociationTable 1 }

NtpAssociationEntry   ::= SEQUENCE {
        ntpAssocId                  Unsigned32,
        ntpAssocName                Utf8String,
        ntpAssocRefId               DisplayString,
        ntpAssocAddressType         InetAddressType,
        ntpAssocAddress             InetAddress,
        ntpAssocOffset              DisplayString,
        ntpAssocStratum             NtpStratum,
        ntpAssocStatusJitter        DisplayString,
        ntpAssocStatusDelay         DisplayString,
        ntpAssocStatusDispersion    DisplayString
}

ntpAssocId      OBJECT-TYPE
    SYNTAX      Unsigned32 ( 1..99999 )
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The association ID.  This is an internal, unique ID."
    ::= { ntpAssociationEntry 1 }

ntpAssocName    OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The hostname or other descriptive name for the association."
    ::= { ntpAssociationEntry 2 }

ntpAssocRefId   OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The refclock driver ID, if available."
    -- a refclock driver ID like "127.127.1.0" for non
    -- uni/multi/broadcast associations
    ::= { ntpAssociationEntry 3 }

ntpAssocAddressType OBJECT-TYPE
    SYNTAX      InetAddressType { ipv4(1), ipv6(2), ipv4z(3), ipv6z(4) }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The type of address of the association.  Can be either IPv4 or
         IPv6 (both with or without zone index) and contains the type of
         address for unicast, multicast, and broadcast associations."
    ::= { ntpAssociationEntry 4 }

ntpAssocAddress OBJECT-TYPE
    SYNTAX      InetAddress (SIZE (4|8|16|20))
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The IP address (IPv4 or IPv6, with or without zone index) of
         the association.  The type and size depends on the
         ntpAssocAddressType object.  Represents the IP address of a
         uni/multi/broadcast association."
    ::= { ntpAssociationEntry 5 }

ntpAssocOffset  OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The time offset to the association as a string."
    -- including unit, e.g., "0.032 ms" or "1.232 s"
    ::= { ntpAssociationEntry 6 }

ntpAssocStratum OBJECT-TYPE
    SYNTAX      NtpStratum
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The association stratum value."
    ::= { ntpAssociationEntry 7 }

ntpAssocStatusJitter OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The jitter in milliseconds as a string."
    ::= { ntpAssociationEntry 8 }

ntpAssocStatusDelay OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The network delay in milliseconds as a string."
    ::= { ntpAssociationEntry 9 }

ntpAssocStatusDispersion OBJECT-TYPE
    SYNTAX      DisplayString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The root dispersion of the association."
    -- e.g., "6.927"
    ::= { ntpAssociationEntry 10 }

ntpAssociationStatisticsTable OBJECT-TYPE
    SYNTAX           SEQUENCE OF NtpAssociationStatisticsEntry
    MAX-ACCESS       not-accessible
    STATUS           current
    DESCRIPTION
        "The table of statistics for current associations."
    ::= { ntpAssociation 2 }

ntpAssociationStatisticsEntry OBJECT-TYPE
    SYNTAX      NtpAssociationStatisticsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The table entry of statistics for current associations."
    INDEX       { ntpAssocId }
    ::= { ntpAssociationStatisticsTable 1 }

NtpAssociationStatisticsEntry   ::= SEQUENCE {
        ntpAssocStatInPkts          Counter32,
        ntpAssocStatOutPkts         Counter32,
        ntpAssocStatProtocolError   Counter32
}

ntpAssocStatInPkts OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages 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."
    ::= { ntpAssociationStatisticsEntry 1 }

ntpAssocStatOutPkts OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages 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."
    ::= { ntpAssociationStatisticsEntry 2 }

ntpAssocStatProtocolError OBJECT-TYPE
    SYNTAX      Counter32
    UNITS       "packets"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of NTP messages 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."
    ::= { ntpAssociationStatisticsEntry 3 }

--
-- Section 4: Control objects
--

ntpEntHeartbeatInterval OBJECT-TYPE
    SYNTAX      Unsigned32
    UNITS       "seconds"
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The interval at which the ntpEntNotifHeartbeat notification
         should be sent, in seconds.  If set to 0 and the
         entNotifHeartbeat bit in ntpEntNotifBits is 1, then
         ntpEntNotifHeartbeat is sent once.
         This value is stored persistently and will be restored to its
         last set value upon cold start or restart."
    DEFVAL { 60 }
    ::= { ntpEntControl 1 }

ntpEntNotifBits OBJECT-TYPE
    SYNTAX       BITS {
                     notUsed(0), -- Used to sync up bit and notification
                                 -- indices
                     entNotifModeChange(1),
                     entNotifStratumChange(2),
                     entNotifSyspeerChanged(3),
                     entNotifAddAssociation(4),
                     entNotifRemoveAssociation(5),
                     entNotifConfigChanged(6),
                     entNotifLeapSecondAnnounced(7),
                     entNotifHeartbeat(8)
    }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "A bit for each notification.  A 1 for a particular bit enables
         that particular notification, a 0 disables it.
         This value is stored persistently and will be restored to its
         last set value upon cold start or restart."
    ::= { ntpEntControl 2 }

--
-- Section 5: Notification objects
--

ntpEntNotifMessage OBJECT-TYPE
    SYNTAX      Utf8String
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
        "Used as a payload object for all notifications.  Holds a
         cleartext event message."
    DEFVAL { "no event" }
    ::= { ntpEntNotifObjects 1 }

--
-- SNMP notification definitions
--

ntpEntNotifications OBJECT IDENTIFIER ::= { ntpSnmpMIB 0 }

ntpEntNotifModeChange NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusCurrentMode }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when the NTP entity changes mode,
         including starting and stopping (if possible)."
    ::= { ntpEntNotifications 1 }

ntpEntNotifStratumChange NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusDateTime, ntpEntStatusStratum,
                  ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when stratum level of NTP changes."
    ::= { ntpEntNotifications 2 }

ntpEntNotifSyspeerChanged NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusDateTime, ntpEntStatusActiveRefSourceId,
                  ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when a (new) syspeer has been
         selected."
    ::= { ntpEntNotifications 3 }

ntpEntNotifAddAssociation NOTIFICATION-TYPE
    OBJECTS  { ntpEntStatusDateTime, ntpAssocName, ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when a new association is
         mobilized."
    ::= { ntpEntNotifications 4 }

ntpEntNotifRemoveAssociation NOTIFICATION-TYPE
    OBJECTS  { ntpEntStatusDateTime, ntpAssocName,  ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when an association is
         demobilized."
    ::= { ntpEntNotifications 5 }

ntpEntNotifConfigChanged NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusDateTime, ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when the NTP configuration has
         changed, e.g., when the system connected to the Internet and
         was assigned a new IP address by the ISPs DHCP server."
    ::= { ntpEntNotifications 6 }

ntpEntNotifLeapSecondAnnounced NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusDateTime, ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent when a leap second has been
         announced."
    ::= { ntpEntNotifications 7 }

ntpEntNotifHeartbeat NOTIFICATION-TYPE
    OBJECTS     { ntpEntStatusDateTime, ntpEntStatusCurrentMode,
                  ntpEntHeartbeatInterval, ntpEntNotifMessage }
    STATUS      current
    DESCRIPTION
        "The notification to be sent periodically (as defined by
         ntpEntHeartbeatInterval) to indicate that the NTP entity is
         still alive."
    ::= { ntpEntNotifications 8 }

--
-- Conformance/Compliance statements
--

ntpEntConformance OBJECT IDENTIFIER ::= { ntpSnmpMIB 2 }

ntpEntCompliances OBJECT IDENTIFIER ::= { ntpEntConformance 1 }
ntpEntGroups      OBJECT IDENTIFIER ::= { ntpEntConformance 2 }

ntpEntNTPCompliance MODULE-COMPLIANCE
    STATUS      current
    DESCRIPTION
        "The compliance statement for SNMP entities that use NTP and
         implement the NTP MIB."
    MODULE  -- this module
        MANDATORY-GROUPS {
                           ntpEntObjectsGroup1
        }
        ::= { ntpEntCompliances 1 }

ntpEntSNTPCompliance MODULE-COMPLIANCE
    STATUS      current
    DESCRIPTION
        "The compliance statement for SNMP entities that use SNTP and
         implement the NTP MIB."
    MODULE  -- this module
        MANDATORY-GROUPS {
                           ntpEntObjectsGroup1
        }
        GROUP ntpEntObjectsGroup2
        DESCRIPTION
                "Optional object group."
        GROUP ntpEntNotifGroup
        DESCRIPTION
                "Optional notifications for this MIB."
        ::= { ntpEntCompliances 2 }

ntpEntObjectsGroup1 OBJECT-GROUP
    OBJECTS {
              ntpEntSoftwareName,
              ntpEntSoftwareVersion,
              ntpEntSoftwareVendor,
              ntpEntSystemType,
              ntpEntStatusEntityUptime,
              ntpEntStatusDateTime,
              ntpAssocName,
              ntpAssocRefId,
              ntpAssocAddressType,
              ntpAssocAddress
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects for the NTP MIB."
    ::= { ntpEntGroups 1 }

ntpEntObjectsGroup2 OBJECT-GROUP
    OBJECTS {
              ntpEntTimeResolution,
              ntpEntTimePrecision,
              ntpEntTimeDistance,
              ntpEntStatusCurrentMode,
              ntpEntStatusStratum,
              ntpEntStatusActiveRefSourceId,
              ntpEntStatusActiveRefSourceName,
              ntpEntStatusActiveOffset,
              ntpEntStatusNumberOfRefSources,
              ntpEntStatusDispersion,
              ntpEntStatusLeapSecond,
              ntpEntStatusLeapSecDirection,
              ntpEntStatusInPkts,
              ntpEntStatusOutPkts,
              ntpEntStatusBadVersion,
              ntpEntStatusProtocolError,
              ntpEntStatusNotifications,
              ntpEntStatPktSent,
              ntpEntStatPktReceived,
              ntpAssocOffset,
              ntpAssocStratum,
              ntpAssocStatusJitter,
              ntpAssocStatusDelay,
              ntpAssocStatusDispersion,
              ntpAssocStatInPkts,
              ntpAssocStatOutPkts,
              ntpAssocStatProtocolError,
              ntpEntHeartbeatInterval,
              ntpEntNotifBits,
              ntpEntNotifMessage
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects for the NTP MIB."
    ::= { ntpEntGroups 2 }

ntpEntNotifGroup NOTIFICATION-GROUP
    NOTIFICATIONS {
                    ntpEntNotifModeChange,
                    ntpEntNotifStratumChange,
                    ntpEntNotifSyspeerChanged,
                    ntpEntNotifAddAssociation,
                    ntpEntNotifRemoveAssociation,
                    ntpEntNotifConfigChanged,
                    ntpEntNotifLeapSecondAnnounced,
                    ntpEntNotifHeartbeat
    }
    STATUS      current
    DESCRIPTION
        "A collection of notifications for the NTP MIB"
    ::= { ntpEntGroups 3 }

END