{"id":399224,"date":"2024-10-20T04:41:29","date_gmt":"2024-10-20T04:41:29","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-802-1as-2020\/"},"modified":"2024-10-26T08:29:26","modified_gmt":"2024-10-26T08:29:26","slug":"ieee-802-1as-2020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-802-1as-2020\/","title":{"rendered":"IEEE 802.1AS-2020"},"content":{"rendered":"

Revision Standard – Active. Protocols, procedures, and managed objects for the transport of timing over local area networks are defined in this standard. It includes the transport of synchronized time, the selection of the timing source (i.e., best master), and the indication of the occurrence and magnitude of timing impairments (i.e., phase and frequency discontinuities).<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std 802.1AS\u2122-2020 Front cover <\/td>\n<\/tr>\n
2<\/td>\nTitle page <\/td>\n<\/tr>\n
4<\/td>\nImportant Notices and Disclaimers Concerning IEEE Standards Documents <\/td>\n<\/tr>\n
7<\/td>\nParticipants <\/td>\n<\/tr>\n
9<\/td>\nIntroduction <\/td>\n<\/tr>\n
10<\/td>\nContents <\/td>\n<\/tr>\n
14<\/td>\nList of figures <\/td>\n<\/tr>\n
16<\/td>\nList of tables <\/td>\n<\/tr>\n
18<\/td>\n1. Overview
1.1 Scope
1.2 Purpose <\/td>\n<\/tr>\n
19<\/td>\n2. Normative references <\/td>\n<\/tr>\n
21<\/td>\n3. Definitions <\/td>\n<\/tr>\n
24<\/td>\n4. Acronyms and abbreviations <\/td>\n<\/tr>\n
27<\/td>\n5. Conformance
5.1 Requirements terminology
5.2 Protocol Implementation Conformance Statement (PICS)
5.3 Time-aware system requirements
5.4 PTP Instance requirements and options
5.4.1 Summary of requirements <\/td>\n<\/tr>\n
28<\/td>\n5.4.2 PTP Instance options <\/td>\n<\/tr>\n
29<\/td>\n5.4.3 PTP Relay Instance requirements
5.5 MAC-specific timing and synchronization methods for full-duplex IEEE 802.3 links <\/td>\n<\/tr>\n
30<\/td>\n5.6 MAC-specific timing and synchronization methods for IEEE Std 802.11-2016
5.7 MAC-specific timing and synchronization methods for IEEE 802.3 EPON
5.8 MAC-specific timing and synchronization methods for coordinated shared network (CSN) <\/td>\n<\/tr>\n
31<\/td>\n6. Conventions
6.1 General
6.2 Service specification method and notation
6.3 Lexical form syntax
6.4 Data types and on-the-wire formats
6.4.1 General <\/td>\n<\/tr>\n
32<\/td>\n6.4.2 Primitive data types specifications
6.4.3 Derived data type specifications <\/td>\n<\/tr>\n
34<\/td>\n6.4.4 Protocol data unit (PDU) formats <\/td>\n<\/tr>\n
36<\/td>\n7. Time-synchronization model for a packet network
7.1 General
7.2 Architecture of a time-aware network
7.2.1 General <\/td>\n<\/tr>\n
37<\/td>\n7.2.2 Time-aware network consisting of a single gPTP domain <\/td>\n<\/tr>\n
39<\/td>\n7.2.3 Time-aware network consisting of multiple gPTP domains <\/td>\n<\/tr>\n
40<\/td>\n7.2.4 Time-aware networks with redundant Grandmaster PTP Instances and\/or redundant paths <\/td>\n<\/tr>\n
43<\/td>\n7.3 Time synchronization
7.3.1 General <\/td>\n<\/tr>\n
44<\/td>\n7.3.2 Delay measurement
7.3.3 Logical syntonization <\/td>\n<\/tr>\n
45<\/td>\n7.3.4 Grandmaster PTP Instance (best master) selection and network establishment
7.3.5 Energy efficiency <\/td>\n<\/tr>\n
46<\/td>\n7.4 PTP Instance architecture <\/td>\n<\/tr>\n
47<\/td>\n7.5 Differences between gPTP (IEEE Std 802.1AS) and PTP (IEEE Std 1588-2019) <\/td>\n<\/tr>\n
49<\/td>\n8. IEEE 802.1AS concepts and terminology
8.1 gPTP domain
8.2 Timescale
8.2.1 Introduction <\/td>\n<\/tr>\n
50<\/td>\n8.2.2 Epoch
8.2.3 UTC offset
8.2.4 Measurement of time within a gPTP domain <\/td>\n<\/tr>\n
51<\/td>\n8.3 Link asymmetry <\/td>\n<\/tr>\n
52<\/td>\n8.4 Messages
8.4.1 General
8.4.2 Message attributes
8.4.3 Generation of event message timestamps <\/td>\n<\/tr>\n
53<\/td>\n8.4.4 Priorities <\/td>\n<\/tr>\n
54<\/td>\n8.5 Ports
8.5.1 General
8.5.2 Port identity <\/td>\n<\/tr>\n
55<\/td>\n8.6 PTP Instance characterization
8.6.1 PTP Instance type
8.6.2 PTP Instance attributes <\/td>\n<\/tr>\n
60<\/td>\n9. Application interfaces
9.1 Overview of the interfaces <\/td>\n<\/tr>\n
61<\/td>\n9.2 ClockSourceTime interface
9.2.1 General
9.2.2 ClockSourceTime.invoke function parameters
9.3 ClockTargetEventCapture interface
9.3.1 General <\/td>\n<\/tr>\n
62<\/td>\n9.3.2 ClockTargetEventCapture.invoke parameters
9.3.3 ClockTargetEventCapture.result parameters
9.4 ClockTargetTriggerGenerate interface
9.4.1 General <\/td>\n<\/tr>\n
63<\/td>\n9.4.2 ClockTargetTriggerGenerate.invoke parameters
9.4.3 ClockTargetTriggerGenerate.result parameters
9.4.4 ClockTargetTriggerGenerate interface definition <\/td>\n<\/tr>\n
64<\/td>\n9.5 ClockTargetClockGenerator interface
9.5.1 General
9.5.2 ClockTargetClockGenerator.invoke parameters
9.5.3 ClockTargetClockGenerator.result parameters <\/td>\n<\/tr>\n
65<\/td>\n9.6 ClockTargetPhaseDiscontinuity interface
9.6.1 General
9.6.2 ClockTargetPhaseDiscontinuity.result parameters <\/td>\n<\/tr>\n
66<\/td>\n10. Media-independent layer specification
10.1 Overview
10.1.1 General
10.1.2 Model of operation <\/td>\n<\/tr>\n
68<\/td>\n10.1.3 Grandmaster-capable PTP Instance
10.2 Time-synchronization state machines
10.2.1 Overview <\/td>\n<\/tr>\n
70<\/td>\n10.2.2 Data structures communicated between state machines <\/td>\n<\/tr>\n
76<\/td>\n10.2.3 Overview of global variables used by time synchronization state machines <\/td>\n<\/tr>\n
78<\/td>\n10.2.4 Per PTP Instance global variables <\/td>\n<\/tr>\n
80<\/td>\n10.2.5 Per-port global variables <\/td>\n<\/tr>\n
84<\/td>\n10.2.6 Function used by multiple state machines
10.2.7 SiteSyncSync state machine <\/td>\n<\/tr>\n
86<\/td>\n10.2.8 PortSyncSyncReceive state machine <\/td>\n<\/tr>\n
88<\/td>\n10.2.9 ClockMasterSyncSend state machine <\/td>\n<\/tr>\n
90<\/td>\n10.2.10 ClockMasterSyncOffset state machine <\/td>\n<\/tr>\n
92<\/td>\n10.2.11 ClockMasterSyncReceive state machine <\/td>\n<\/tr>\n
94<\/td>\n10.2.12 PortSyncSyncSend state machine <\/td>\n<\/tr>\n
97<\/td>\n10.2.13 ClockSlaveSync state machine <\/td>\n<\/tr>\n
99<\/td>\n10.3 Best master clock selection, external port configuration, and announce interval setting state machines
10.3.1 Best master clock selection and external port configuration overview <\/td>\n<\/tr>\n
101<\/td>\n10.3.2 systemIdentity <\/td>\n<\/tr>\n
102<\/td>\n10.3.3 stepsRemoved
10.3.4 time-synchronization spanning tree priority vectors <\/td>\n<\/tr>\n
103<\/td>\n10.3.5 Priority vector calculations <\/td>\n<\/tr>\n
104<\/td>\n10.3.6 PTP Port state assignments <\/td>\n<\/tr>\n
105<\/td>\n10.3.7 Overview of best master clock selection, external port configuration, and announce interval setting state machines <\/td>\n<\/tr>\n
108<\/td>\n10.3.8 Overview of global variables used by best master clock selection, external port configuration, and announce interval setting state machines <\/td>\n<\/tr>\n
110<\/td>\n10.3.9 Per PTP Instance global variables <\/td>\n<\/tr>\n
113<\/td>\n10.3.10 Per-port global variables <\/td>\n<\/tr>\n
116<\/td>\n10.3.11 PortAnnounceReceive state machine <\/td>\n<\/tr>\n
118<\/td>\n10.3.12 PortAnnounceInformation state machine <\/td>\n<\/tr>\n
120<\/td>\n10.3.13 PortStateSelection state machine <\/td>\n<\/tr>\n
123<\/td>\n10.3.14 PortAnnounceInformationExt state machine <\/td>\n<\/tr>\n
125<\/td>\n10.3.15 PortStateSettingExt state machine <\/td>\n<\/tr>\n
128<\/td>\n10.3.16 PortAnnounceTransmit state machine <\/td>\n<\/tr>\n
130<\/td>\n10.3.17 AnnounceIntervalSetting state machine <\/td>\n<\/tr>\n
133<\/td>\n10.3.18 SyncIntervalSetting state machine <\/td>\n<\/tr>\n
136<\/td>\n10.4 State machines related to signaling gPTP capability
10.4.1 GptpCapableTransmit state machine <\/td>\n<\/tr>\n
138<\/td>\n10.4.2 GptpCapableReceive state machine <\/td>\n<\/tr>\n
140<\/td>\n10.4.3 GptpCapableIntervalSetting state machine <\/td>\n<\/tr>\n
143<\/td>\n10.5 Message attributes
10.5.1 General
10.5.2 Message class
10.5.3 Addresses
10.5.4 EtherType <\/td>\n<\/tr>\n
144<\/td>\n10.5.5 Subtype
10.5.6 Source port identity
10.5.7 Sequence number
10.6 Message formats
10.6.1 General <\/td>\n<\/tr>\n
145<\/td>\n10.6.2 Header <\/td>\n<\/tr>\n
149<\/td>\n10.6.3 Announce message <\/td>\n<\/tr>\n
151<\/td>\n10.6.4 Signaling message <\/td>\n<\/tr>\n
157<\/td>\n10.7 Protocol timing characterization
10.7.1 General
10.7.2 Message transmission intervals <\/td>\n<\/tr>\n
160<\/td>\n10.7.3 Timeouts <\/td>\n<\/tr>\n
161<\/td>\n11. Media-dependent layer specification for full-duplex point-to-point links
11.1 Overview
11.1.1 General
11.1.2 Propagation delay measurement <\/td>\n<\/tr>\n
163<\/td>\n11.1.3 Transport of time-synchronization information <\/td>\n<\/tr>\n
166<\/td>\n11.1.4 Model of operation <\/td>\n<\/tr>\n
167<\/td>\n11.2 State machines for MD entity specific to full-duplex point-to-point links
11.2.1 General <\/td>\n<\/tr>\n
169<\/td>\n11.2.2 Determination of asCapable and asCapableAcrossDomains <\/td>\n<\/tr>\n
170<\/td>\n11.2.3 Use of MAC Control PAUSE operation
11.2.4 Use of priority-based flow control
11.2.5 Use of link aggregation <\/td>\n<\/tr>\n
171<\/td>\n11.2.6 Service interface primitives and data structures communicated between state machines
11.2.7 DL-UNITDATA.request
11.2.8 DL-UNITDATA.indication
11.2.9 MDTimestampReceive
11.2.10 MDSyncReceive
11.2.11 MDSyncSend
11.2.12 Overview of MD entity global variables <\/td>\n<\/tr>\n
172<\/td>\n11.2.13 MD entity global variables <\/td>\n<\/tr>\n
174<\/td>\n11.2.14 MDSyncReceiveSM state machine <\/td>\n<\/tr>\n
177<\/td>\n11.2.15 MDSyncSendSM state machine <\/td>\n<\/tr>\n
181<\/td>\n11.2.16 OneStepTxOperSetting state machine <\/td>\n<\/tr>\n
183<\/td>\n11.2.17 Common Mean Link Delay Service (CMLDS) <\/td>\n<\/tr>\n
184<\/td>\n11.2.18 Common Mean Link Delay Service (CMLDS) global variables <\/td>\n<\/tr>\n
185<\/td>\n11.2.19 MDPdelayReq state machine <\/td>\n<\/tr>\n
190<\/td>\n11.2.20 MDPdelayResp state machine <\/td>\n<\/tr>\n
193<\/td>\n11.2.21 LinkDelayIntervalSetting state machine <\/td>\n<\/tr>\n
196<\/td>\n11.3 Message attributes
11.3.1 General
11.3.2 Message types contained in each message class <\/td>\n<\/tr>\n
197<\/td>\n11.3.3 VLAN tag
11.3.4 Addresses
11.3.5 EtherType
11.3.6 Subtype
11.3.7 Source port identity <\/td>\n<\/tr>\n
198<\/td>\n11.3.8 Sequence number
11.3.9 Event message timestamp point
11.4 Message formats
11.4.1 General
11.4.2 Header <\/td>\n<\/tr>\n
201<\/td>\n11.4.3 Sync message <\/td>\n<\/tr>\n
202<\/td>\n11.4.4 Follow_Up message <\/td>\n<\/tr>\n
204<\/td>\n11.4.5 Pdelay_Req message
11.4.6 Pdelay_Resp message <\/td>\n<\/tr>\n
205<\/td>\n11.4.7 Pdelay_Resp_Follow_Up message <\/td>\n<\/tr>\n
206<\/td>\n11.5 Protocol timing characterization
11.5.1 General
11.5.2 Message transmission intervals <\/td>\n<\/tr>\n
207<\/td>\n11.5.3 allowedLostResponses
11.5.4 allowedFaults
11.6 Control of computation of neighborRateRatio <\/td>\n<\/tr>\n
208<\/td>\n11.7 Control of computation of meanLinkDelay <\/td>\n<\/tr>\n
209<\/td>\n12. Media-dependent layer specification for IEEE 802.11 links
12.1 Overview
12.1.1 General
12.1.2 IEEE 802.11 Timing Measurement and Fine Timing Measurement procedures <\/td>\n<\/tr>\n
213<\/td>\n12.1.3 Layering for IEEE 802.11 links
12.2 Messages <\/td>\n<\/tr>\n
215<\/td>\n12.3 Determination of Timing Measurement and Fine Timing Measurement capability
12.4 Determination of asCapable <\/td>\n<\/tr>\n
216<\/td>\n12.5 State machines
12.5.1 Media-dependent master state machines <\/td>\n<\/tr>\n
223<\/td>\n12.5.2 Media-dependent slave state machine <\/td>\n<\/tr>\n
228<\/td>\n12.6 FTM parameters <\/td>\n<\/tr>\n
229<\/td>\n12.7 Format of VendorSpecific information element <\/td>\n<\/tr>\n
230<\/td>\n12.8 Synchronization message interval
12.8.1 General synchronization message interval specification
12.8.2 Synchronization message interval default value <\/td>\n<\/tr>\n
231<\/td>\n13. Media-dependent layer specification for interface to IEEE 802.3 Ethernet passive optical network link
13.1 Overview
13.1.1 General
13.1.2 Description of the EPON timing process
13.1.3 Best master selection <\/td>\n<\/tr>\n
234<\/td>\n13.1.4 Time synchronization in EPON <\/td>\n<\/tr>\n
235<\/td>\n13.2 Message attributes
13.2.1 Message class
13.3 Message format
13.3.1 TIMESYNC message <\/td>\n<\/tr>\n
238<\/td>\n13.4 Determination of asCapable
13.5 Layering for IEEE 802.3 EPON links <\/td>\n<\/tr>\n
239<\/td>\n13.6 Service interface definitions
13.6.1 OSSPDU.request <\/td>\n<\/tr>\n
241<\/td>\n13.6.2 OSSPDU.indication
13.7 MD entity global variables <\/td>\n<\/tr>\n
242<\/td>\n13.8 State machines
13.8.1 Requester state machine <\/td>\n<\/tr>\n
243<\/td>\n13.8.2 Responder state machine <\/td>\n<\/tr>\n
245<\/td>\n13.9 Message transmission intervals
13.9.1 General interval specification
13.9.2 TIMESYNC message transmission interval default value <\/td>\n<\/tr>\n
246<\/td>\n14. Timing and synchronization management
14.1 General
14.1.1 Data set hierarchy <\/td>\n<\/tr>\n
247<\/td>\n14.1.2 Data set descriptions <\/td>\n<\/tr>\n
249<\/td>\n14.2 Default Parameter Data Set (defaultDS)
14.2.1 General
14.2.2 clockIdentity
14.2.3 numberPorts
14.2.4 clockQuality
14.2.5 priority1
14.2.6 priority2
14.2.7 gmCapable <\/td>\n<\/tr>\n
250<\/td>\n14.2.8 currentUtcOffset
14.2.9 currentUtcOffsetValid
14.2.10 leap59
14.2.11 leap61
14.2.12 timeTraceable <\/td>\n<\/tr>\n
251<\/td>\n14.2.13 frequencyTraceable
14.2.14 ptpTimescale
14.2.15 timeSource
14.2.16 domainNumber
14.2.17 sdoId
14.2.18 externalPortConfigurationEnabled
14.2.19 instanceEnable
14.2.20 defaultDS table <\/td>\n<\/tr>\n
252<\/td>\n14.3 Current Parameter Data Set (currentDS)
14.3.1 General
14.3.2 stepsRemoved <\/td>\n<\/tr>\n
253<\/td>\n14.3.3 offsetFromMaster
14.3.4 lastGmPhaseChange
14.3.5 lastGmFreqChange
14.3.6 gmTimebaseIndicator
14.3.7 gmChangeCount
14.3.8 timeOfLastGmChangeEvent
14.3.9 timeOfLastGmPhaseChangeEvent
14.3.10 timeOfLastGmFreqChangeEvent <\/td>\n<\/tr>\n
254<\/td>\n14.3.11 currentDS table
14.4 Parent Parameter Data Set (parentDS)
14.4.1 General
14.4.2 parentPortIdentity <\/td>\n<\/tr>\n
255<\/td>\n14.4.3 cumulativeRateRatio
14.4.4 grandmasterIdentity
14.4.5 grandmasterClockQuality
14.4.6 grandmasterPriority1
14.4.7 grandmasterPriority2
14.4.8 parentDS table <\/td>\n<\/tr>\n
256<\/td>\n14.5 Time Properties Parameter Data Set (timePropertiesDS)
14.5.1 General
14.5.2 currentUtcOffset
14.5.3 currentUtcOffsetValid
14.5.4 leap59
14.5.5 leap61
14.5.6 timeTraceable <\/td>\n<\/tr>\n
257<\/td>\n14.5.7 frequencyTraceable
14.5.8 ptpTimescale
14.5.9 timeSource
14.5.10 timePropertiesDS table
14.6 Path Trace Parameter Data Set (pathTraceDS)
14.6.1 General
14.6.2 list <\/td>\n<\/tr>\n
258<\/td>\n14.6.3 enable
14.6.4 pathTraceDS table
14.7 Acceptable Master Table Parameter Data Set (acceptableMasterTableDS)
14.7.1 General
14.7.2 maxTableSize
14.7.3 actualTableSize
14.7.4 acceptableMasterArray
14.7.5 acceptableMasterTableDS table <\/td>\n<\/tr>\n
259<\/td>\n14.8 Port Parameter Data Set (portDS)
14.8.1 General
14.8.2 portIdentity
14.8.3 portState <\/td>\n<\/tr>\n
260<\/td>\n14.8.4 ptpPortEnabled
14.8.5 delayMechanism
14.8.6 isMeasuringDelay
14.8.7 asCapable
14.8.8 meanLinkDelay
14.8.9 meanLinkDelayThresh <\/td>\n<\/tr>\n
261<\/td>\n14.8.10 delayAsymmetry
14.8.11 neighborRateRatio
14.8.12 initialLogAnnounceInterval
14.8.13 currentLogAnnounceInterval
14.8.14 useMgtSettableLogAnnounceInterval
14.8.15 mgtSettableLogAnnounceInterval
14.8.16 announceReceiptTimeout <\/td>\n<\/tr>\n
262<\/td>\n14.8.17 initialLogSyncInterval
14.8.18 currentLogSyncInterval
14.8.19 useMgtSettableLogSyncInterval
14.8.20 mgtSettableLogSyncInterval
14.8.21 syncReceiptTimeout
14.8.22 syncReceiptTimeoutTimeInterval
14.8.23 initialLogPdelayReqInterval <\/td>\n<\/tr>\n
263<\/td>\n14.8.24 currentLogPdelayReqInterval
14.8.25 useMgtSettableLogPdelayReqInterval
14.8.26 mgtSettableLogPdelayReqInterval
14.8.27 initialLogGptpCapableMessageInterval
14.8.28 currentLogGptpCapableMessageInterval
14.8.29 useMgtSettableLogGptpCapableMessageInterval
14.8.30 mgtSettableLogGptpCapableMessageInterval <\/td>\n<\/tr>\n
264<\/td>\n14.8.31 initialComputeNeighborRateRatio
14.8.32 currentComputeNeighborRateRatio
14.8.33 useMgtSettableComputeNeighborRateRatio
14.8.34 mgtSettableComputeNeighborRateRatio
14.8.35 initialComputeMeanLinkDelay
14.8.36 currentComputeMeanLinkDelay
14.8.37 useMgtSettableComputeMeanLinkDelay <\/td>\n<\/tr>\n
265<\/td>\n14.8.38 mgtSettableComputeMeanLinkDelay
14.8.39 allowedLostResponses
14.8.40 allowedFaults
14.8.41 gPtpCapableReceiptTimeout
14.8.42 versionNumber
14.8.43 nup
14.8.44 ndown
14.8.45 oneStepTxOper <\/td>\n<\/tr>\n
266<\/td>\n14.8.46 oneStepReceive
14.8.47 oneStepTransmit
14.8.48 initialOneStepTxOper
14.8.49 currentOneStepTxOper
14.8.50 useMgtSettableOneStepTxOper
14.8.51 mgtSettableOneStepTxOper
14.8.52 syncLocked
14.8.53 pdelayTruncatedTimestampsArray <\/td>\n<\/tr>\n
267<\/td>\n14.8.54 minorVersionNumber
14.8.55 portDS table <\/td>\n<\/tr>\n
270<\/td>\n14.9 Description Port Parameter Data Set (descriptionPortDS)
14.9.1 General
14.9.2 profileIdentifier
14.9.3 descriptionPortDS table
14.10 Port Parameter Statistics Data Set (portStatisticsDS)
14.10.1 General
14.10.2 rxSyncCount
14.10.3 rxOneStepSyncCount
14.10.4 rxFollowUpCount <\/td>\n<\/tr>\n
271<\/td>\n14.10.5 rxPdelayRequestCount
14.10.6 rxPdelayResponseCount
14.10.7 rxPdelayResponseFollowUpCount
14.10.8 rxAnnounceCount
14.10.9 rxPTPPacketDiscardCount
14.10.10 syncReceiptTimeoutCount <\/td>\n<\/tr>\n
272<\/td>\n14.10.11 announceReceiptTimeoutCount
14.10.12 pdelayAllowedLostResponsesExceededCount
14.10.13 txSyncCount
14.10.14 txOneStepSyncCount
14.10.15 txFollowUpCount
14.10.16 txPdelayRequestCount
14.10.17 txPdelayResponseCount <\/td>\n<\/tr>\n
273<\/td>\n14.10.18 txPdelayResponseFollowUpCount
14.10.19 txAnnounceCount
14.10.20 portStatisticsDS table <\/td>\n<\/tr>\n
274<\/td>\n14.11 Acceptable Master Port Parameter Data Set (acceptableMasterPortDS)
14.11.1 General
14.11.2 acceptableMasterTableEnabled
14.11.3 acceptableMasterPortDS table
14.12 External Port Configuration Port Parameter Data Set (externalPortConfigurationPortDS)
14.12.1 General
14.12.2 desiredState <\/td>\n<\/tr>\n
275<\/td>\n14.12.3 externalPortConfigurationPortDS table
14.13 Asymmetry Measurement Mode Parameter Data Set (asymmetryMeasurementModeDS)
14.13.1 General
14.13.2 asymmetryMeasurementMode
14.13.3 asymmetryMeasurementModeDS table <\/td>\n<\/tr>\n
276<\/td>\n14.14 Common Services Port Parameter Data Set (commonServicesPortDS)
14.14.1 General
14.14.2 cmldsLinkPortPortNumber
14.14.3 commonServicesPortDS table
14.15 Common Mean Link Delay Service Default Parameter Data Set (cmldsDefaultDS)
14.15.1 General
14.15.2 clockIdentity
14.15.3 numberLinkPorts
14.15.4 cmldsDefaultDS table <\/td>\n<\/tr>\n
277<\/td>\n14.16 Common Mean Link Delay Service Link Port Parameter Data Set (cmldsLinkPortDS)
14.16.1 General
14.16.2 portIdentity
14.16.3 cmldsLinkPortEnabled
14.16.4 isMeasuringDelay
14.16.5 asCapableAcrossDomains
14.16.6 meanLinkDelay <\/td>\n<\/tr>\n
278<\/td>\n14.16.7 meanLinkDelayThresh
14.16.8 delayAsymmetry
14.16.9 neighborRateRatio
14.16.10 initialLogPdelayReqInterval
14.16.11 currentLogPdelayReqInterval <\/td>\n<\/tr>\n
279<\/td>\n14.16.12 useMgtSettableLogPdelayReqInterval
14.16.13 mgtSettableLogPdelayReqInterval
14.16.14 initialComputeNeighborRateRatio
14.16.15 currentComputeNeighborRateRatio
14.16.16 useMgtSettableComputeNeighborRateRatio
14.16.17 mgtSettableComputeNeighborRateRatio
14.16.18 initialComputeMeanLinkDelay <\/td>\n<\/tr>\n
280<\/td>\n14.16.19 currentComputeMeanLinkDelay
14.16.20 useMgtSettableComputeMeanLinkDelay
14.16.21 mgtSettableComputeMeanLinkDelay
14.16.22 allowedLostResponses
14.16.23 allowedFaults
14.16.24 versionNumber
14.16.25 pdelayTruncatedTimestampsArray
14.16.26 minorVersionNumber <\/td>\n<\/tr>\n
281<\/td>\n14.16.27 cmldsLinkPortDS table <\/td>\n<\/tr>\n
282<\/td>\n14.17 Common Mean Link Delay Service Link Port Parameter Statistics Data Set (cmldsLinkPortStatisticsDS)
14.17.1 General
14.17.2 rxPdelayRequestCount
14.17.3 rxPdelayResponseCount
14.17.4 rxPdelayResponseFollowUpCount
14.17.5 rxPTPPacketDiscardCount
14.17.6 pdelayAllowedLostResponsesExceededCount
14.17.7 txPdelayRequestCount <\/td>\n<\/tr>\n
283<\/td>\n14.17.8 txPdelayResponseCount
14.17.9 txPdelayResponseFollowUpCount
14.17.10 cmldsLinkPortStatisticsDS table <\/td>\n<\/tr>\n
284<\/td>\n14.18 Common Mean Link Delay Service Asymmetry Measurement Mode Parameter Data Set (cmldsAsymmetryMeasurementModeDS)
14.18.1 General
14.18.2 asymmetryMeasurementMode
14.18.3 cmldsAsymmetryMeasurementModeDS table <\/td>\n<\/tr>\n
285<\/td>\n15. Managed object definitions
15.1 Internet Standard Management Framework
15.2 Structure of the MIB <\/td>\n<\/tr>\n
292<\/td>\n15.3 Relationship to MIB in IEEE Std 802.1AS-2011
15.4 Security considerations <\/td>\n<\/tr>\n
294<\/td>\n15.5 Textual conventions defined in this MIB
15.6 IEEE 802.1AS MIB module, <\/td>\n<\/tr>\n
369<\/td>\n16. Media-dependent layer specification for CSN
16.1 Overview
16.2 Coordinated Shared Network characteristics <\/td>\n<\/tr>\n
370<\/td>\n16.3 Layering for CSN links <\/td>\n<\/tr>\n
371<\/td>\n16.4 Path delay measurement over a CSN backbone
16.4.1 General
16.4.2 Path delay measurement between CSN node and neighbor PTP Instance <\/td>\n<\/tr>\n
372<\/td>\n16.4.3 Path delay measurement between CSN nodes <\/td>\n<\/tr>\n
374<\/td>\n16.5 Synchronization messages
16.5.1 General <\/td>\n<\/tr>\n
375<\/td>\n16.5.2 Synchronization message propagation on CSN without network reference clock
16.5.3 Synchronization message propagation on a CSN with network reference clock <\/td>\n<\/tr>\n
378<\/td>\n16.6 Specific CSN requirements
16.6.1 General
16.6.2 MoCA-specific behavior <\/td>\n<\/tr>\n
379<\/td>\n16.6.3 ITU-T G.hn-specific behavior
16.7 Grandmaster PTP Instance capability
16.8 CSN clock and node performance requirements <\/td>\n<\/tr>\n
380<\/td>\nAnnex A (normative) Protocol Implementation Conformance Statement (PICS) proforma <\/td>\n<\/tr>\n
398<\/td>\nAnnex B (normative) Performance requirements <\/td>\n<\/tr>\n
406<\/td>\nAnnex C (informative) Timescales and epochs <\/td>\n<\/tr>\n
410<\/td>\nAnnex D Reserved for future use <\/td>\n<\/tr>\n
411<\/td>\nAnnex E Reserved for future use <\/td>\n<\/tr>\n
412<\/td>\nAnnex F (informative) PTP profile included in this standard <\/td>\n<\/tr>\n
415<\/td>\nAnnex G (informative) The asymmetry compensation measurement procedure based on line-swapping <\/td>\n<\/tr>\n
418<\/td>\nAnnex H (informative) Bibliography <\/td>\n<\/tr>\n
421<\/td>\nBack cover <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard for Local and Metropolitan Area Networks–Timing and Synchronization for Time-Sensitive Applications<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2020<\/td>\n421<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":399228,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-399224","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ieee","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/399224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/399228"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=399224"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=399224"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=399224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}