RFC 8173
Precision Time Protocol Version 2 (PTPv2) Management Information Base
Pages: 64
Proposed Standard
Proposed Standard
Part 1 of 3 – Pages 1 to 18
Internet Engineering Task Force (IETF) V. Shankarkumar Request for Comments: 8173 L. Montini Category: Standards Track Cisco Systems ISSN: 2070-1721 T. Frost Calnex Solutions Ltd. G. Dowd Microsemi June 2017 Precision Time Protocol Version 2 (PTPv2) Management Information BaseAbstract
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in internets based on TCP or IP. In particular, it defines objects for managing networks using the Precision Time Protocol (PTP), specified in IEEE Std. 1588-2008. This memo specifies a MIB module in a manner that is both compliant to the Structure of Management Information version 2 (SMIv2) and semantically identical to the peer SMIv1 definitions. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc8173.
Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.Table of Contents
1. Introduction ....................................................3 1.1. Relationship to Other Profiles and MIBs ....................3 2. The SNMP Management Framework ...................................4 3. Overview ........................................................4 4. PTP MIB Definition ..............................................5 5. Security Considerations ........................................59 6. IANA Considerations ............................................61 7. References .....................................................62 7.1. Normative References ......................................62 7.2. Informative References ....................................63 Acknowledgements ..................................................63 Author's Addresses ................................................64
1. Introduction
This memo defines a portion of the Management Information Base (MIB) module for use with network management protocols in the Internet community. In particular, it describes managed objects used for managing PTP devices including ordinary clocks, transparent clocks, and boundary clocks. This MIB module is restricted to reading standard PTP data elements, as described in [IEEE-1588-2008]. This enables it to monitor the operation of PTP clocks within the network. It is envisioned that this MIB module will complement other managed objects to be defined that will provide more detailed information on the performance of PTP clocks supporting the Telecom Profile defined in [G.8265.1] and any future profiles that may be defined. Those objects are considered out of scope for the current document. Similarly, this MIB module is read-only and not intended to provide the ability to configure PTP clocks. Since PTP clocks are often embedded in other network elements such as routers, switches, and gateways, this ability is generally provided via the configuration interface for the network element. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.1.1. Relationship to Other Profiles and MIBs
This MIB module is intended to be used with the default PTP profile described in [IEEE-1588-2008] when running over the IP network layer. As stated above, it is envisioned that this MIB module will complement other managed objects to be defined to monitor and measure the performance of PTP clocks supporting specific PTP profiles, e.g., the Telecom Profile defined in [G.8265.1]. Some other PTP profiles have their own MIB modules defined as part of the profile, and this MIB module is not intended to replace those MIB modules.
2. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].3. Overview
The objects defined in this MIB module are to be used when describing the Precision Time Protocol (PTP), as defined in [IEEE-1588-2008]. Section 6 of [IEEE-1588-2008] provides an overview of synchronization networks using PTP. Terms used in this document have meanings as defined in Section 3.1 of [IEEE-1588-2008].
4. PTP MIB Definition
PTPBASE-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY, Gauge32, Unsigned32, Counter32, Counter64, mib-2, Integer32 FROM SNMPv2-SMI OBJECT-GROUP, MODULE-COMPLIANCE FROM SNMPv2-CONF TEXTUAL-CONVENTION, TruthValue, DisplayString, AutonomousType FROM SNMPv2-TC InterfaceIndexOrZero FROM IF-MIB; ptpbaseMIB MODULE-IDENTITY LAST-UPDATED "201705300000Z" ORGANIZATION "TICTOC Working Group" CONTACT-INFO "WG Email: tictoc@ietf.org Vinay Shankarkumar Cisco Systems Email: vinays@cisco.com Laurent Montini Cisco Systems Email: lmontini@cisco.com Tim Frost Calnex Solutions Ltd. Email: tim.frost@calnexsol.com Greg Dowd Microsemi Inc. Email: greg.dowd@microsemi.com"
DESCRIPTION
"The MIB module for PTP version 2
Copyright (c) 2017 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).
Overview of PTP version 2 (IEEE Std. 1588-2008)
[IEEE-1588-2008] defines a protocol enabling precise
synchronization of clocks in measurement and control systems
implemented with packet-based networks, the Precision Time
Protocol version 2 (PTPv2). This MIB module does not address
PTPv1, the earlier version defined in IEEE Std. 1588-2002.
The protocol is applicable to network elements communicating
using IP. The protocol enables heterogeneous systems that
include clocks of various inherent precision, resolution, and
stability to synchronize to a grandmaster clock.
The protocol supports system-wide synchronization accuracy in
the sub-microsecond range with minimal network and local clock
computing resources. [IEEE-1588-2008] uses UDP/IP or
Ethernet and can be adapted to other mappings. It includes
formal mechanisms for message extensions, higher sampling rates,
correction for asymmetry, a clock type to reduce error
accumulation in large topologies, and specifications on how to
incorporate the resulting additional data into the
synchronization protocol. [IEEE-1588-2008] also defines
conformance and management capability.
MIB description
This MIB module supports the Precision Time Protocol version 2
(PTPv2, hereafter designated as PTP) features of network element
system devices, when using the default PTP profile described in
[IEEE-1588-2008] when running over the IP network layer.
It is envisioned that this MIB module will complement other
managed objects to be defined to monitor and measure the
performance of the PTP devices and telecom clocks supporting
specific PTP profiles.
Some other PTP profiles have their own MIB modules defined as
part of the profile, and this MIB module is not intended to
replace those MIB modules.
Technical terms used in this module are defined in
[IEEE-1588-2008].
The MIB module refers to sections of [IEEE-1588-2008].
Abbreviations:
E2E End-to-End
EUI Extended Unique Identifier
GPS Global Positioning System
IANA Internet Assigned Numbers Authority
IP Internet Protocol
NTP Network Time Protocol (see [RFC5905])
P2P Peer-to-Peer
PTP Precision Time Protocol
TAI International Atomic Time
UDP User Datagram Protocol
UTC Coordinated Universal Time
References:
[IEEE-1588-2008] IEEE Standard for A Precision Clock
Synchronization Protocol for Networked Measurement and
Control Systems, IEEE Std. 1588-2008, July 2008.
The below table specifies the object formats of the various
textual conventions used.
Data type mapping Textual Convention SYNTAX
------------------- --------------------- ------------------
5.3.2 TimeInterval PtpClockTimeInterval OCTET
STRING(SIZE(1..255))
5.3.3 Timestamp PtpClockTimestamp OCTET STRING(SIZE(6))
5.3.4 ClockIdentity PtpClockIdentity OCTET STRING(SIZE(8))
5.3.5 PortIdentity PtpClockPortNumber INTEGER(1..65535)
5.3.7 ClockQuality PtpClockQualityClassType
"
REVISION "201705300000Z"
DESCRIPTION "Initial version of this MIB module, published
as RFC 8173."
::= { mib-2 241 }
-- Textual Conventions
PtpClockDomainType ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The Domain is identified by an integer, the domainNumber, in
the range of 0 to 255. An integer value that is used to assign
each PTP device to a particular domain."
REFERENCE "Section 7.1 ('Domains') and Table 2 ('domainNumber')
of [IEEE-1588-2008]"
SYNTAX Unsigned32 (0..255)
PtpClockIdentity ::= TEXTUAL-CONVENTION
DISPLAY-HINT "255a"
STATUS current
DESCRIPTION
"The clock identity is an 8-octet array and will be presented in
the form of a character array. Network byte order is assumed.
The value of the PtpClockIdentity should be taken from the
IEEE EUI-64 individual assigned numbers as indicated in
Section 7.5.2.2.2 of [IEEE-1588-2008]. It can also be a
non-EUI-64 address as defined in Section 7.5.2.2.3 of
[IEEE-1588-2008].
The clock identifier can be constructed from existing EUI-48
assignments."
REFERENCE "Section 7.5.2.2.1 ('General') of [IEEE-1588-2008]"
SYNTAX OCTET STRING (SIZE (8))
PtpClockInstanceType ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The instance of the clock of a given clock type in a given
domain."
SYNTAX Unsigned32 (0..255)
PtpClockIntervalBase2 ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"The interval included in message types Announce, Sync,
Delay_Req, and Pdelay_Req as indicated in Section 7.7.2.1 of
[IEEE-1588-2008]."
REFERENCE "Section 7.7.2.1 ('General interval specification') of
[IEEE-1588-2008]"
SYNTAX Integer32 (-128..127)
PtpClockMechanismType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The clock type based on whether end-to-end or peer-to-peer
mechanisms are used. The mechanism used to calculate the Mean
Path Delay as indicated in Table 9 of [IEEE-1588-2008]."
REFERENCE
"Sections 8.2.5.4.4 ('portDS.delayMechanism'),
6.6.4 ('Measuring link propagation delay in clocks supporting
peer-to-peer path correction'), and
7.4.2 ('communication Path asymmetry') of [IEEE-1588-2008]."
SYNTAX INTEGER {
e2e(1),
p2p(2),
disabled(254)
}
PtpClockPortNumber ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"An index identifying a specific PTP port on a PTP node."
REFERENCE
"Sections 7.5.2.3 ('portNumber') and 5.3.5 ('PortIdentity') of
[IEEE-1588-2008]"
SYNTAX Unsigned32 (0..65535)
PtpClockPortState ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This is the value of the current state of the protocol engine
associated with this port."
REFERENCE
"Sections 8.2.5.3.1 ('portState') and 9.2.5 ('State machines')
of [IEEE-1588-2008]"
SYNTAX INTEGER {
initializing(1),
faulty(2),
disabled(3),
listening(4),
preMaster(5),
master(6),
passive(7),
uncalibrated(8),
slave(9)
}
PtpClockPortTransportTypeAddress ::= TEXTUAL-CONVENTION
DISPLAY-HINT "255a"
STATUS current
DESCRIPTION
"The clock port transport protocol address used for this
communication between the clock nodes. This is a string
corresponding to the address type as specified by the
transport type used. The transport types can be defined
elsewhere, in addition to the ones defined in this document.
This can be an address of type IP version 4, IP version 6,
Ethernet, DeviceNET, ControlNET, or IEC61158. The OCTET STRING
representation of the OID of ptpbaseWellKnownTransportTypes
will be used in the values contained in the OCTET STRING."
REFERENCE "Annex D (IPv4), Annex E (IPv6), Annex F (Ethernet),
Annex G (DeviceNET), Annex H (ControlNET), and
Annex I (IEC61158) of [IEEE-1588-2008]"
SYNTAX OCTET STRING (SIZE (1..255))
PtpClockProfileType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Clock Profile used. A profile is the set of allowed PTP
features applicable to a device."
REFERENCE "Sections 3.1.30 ('profile') and 19.3 ('PTP
profiles') of [IEEE-1588-2008]"
SYNTAX INTEGER {
default(1),
telecom(2),
vendorspecific(3)
}
PtpClockQualityAccuracyType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The ClockQuality as specified in Section 5.3.7,
Section 7.6.2.5, and Table 6 of [IEEE-1588-2008].
The following values are not represented in the enumerated
values.
0x01-0x1F Reserved
0x32-0x7F Reserved
It is important to note that Section 7.1.1 of RFC 2578 allows
for gaps and for enumerated values to start at zero when
indicated by the protocol."
REFERENCE
"Section 5.3.7 ('ClockQuality'), Section 7.6.2.5
('clockAccuracy'), and Table 6 ('clockAccuracy enumeration')
of [IEEE-1588-2008]"
SYNTAX INTEGER {
-- reserved00(0:31), 0x00 to 0x1F
nanoSecond25(32), -- 0x20
nanoSecond100(33), -- 0x21
nanoSecond250(34), -- 0x22
microSec1(35), -- 0x23
microSec2dot5(36), -- 0x24
microSec10(37), -- 0x25
microSec25(38), -- 0x26
microSec100(39), -- 0x27
microSec250(40), -- 0x28
milliSec1(41), -- 0x29
milliSec2dot5(42), -- 0x2A
milliSec10(43), -- 0x2B
milliSec25(44), -- 0x2C
milliSec100(45), -- 0x2D
milliSec250(46), -- 0x2E
second1(47), -- 0x2F
second10(48), -- 0x30
secondGreater10(49), -- 0x31
unknown(254) -- 0xFE
-- reserved255(255), 0xFF
}
PtpClockQualityClassType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The ClockQuality as specified in Section 5.3.7,
Section 7.6.2.4, and Table 5 of [IEEE-1588-2008]."
REFERENCE "Section 5.3.7 ('ClockQuality'), Section 7.6.2.4
('clockClass'), and Table 5 ('clockClass
specifications') of [IEEE-1588-2008]."
SYNTAX INTEGER {
-- reserved(0), 0x00
-- reserved(1:5), 0x01 to 0x05
clockclass6(6), -- 0x06
clockclass7(7), -- 0x07
-- reserved(8), 0x08
-- reserved(9:10), 0x09 to 0x0A
-- reserved(11:12), 0x0B, 0x0C
clockclass13(13), -- 0x0D
clockclass14(14), -- 0x0E
-- reserved(15:51), 0x0F to 0x33
clockclass52(52), -- 0x34
-- reserved(53:57), 0x35 to 0x39
clockclass58(58) -- 0x3A
-- reserved(59:67), 0x3B to 0x43
-- otherprofiles(68:122), 0x44 to 0x7A
-- reserved(123:127), 0x7B to 0x7F
-- reserved(128:132), 0x80 to 0x84
}
PtpClockRoleType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The Clock Role. The protocol generates a master-slave
relationship among the clocks in the system.
Clock Role Value
-------------------------
Master clock 1
Slave clock 2 "
SYNTAX INTEGER {
master(1),
slave(2)
}
PtpClockStateType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The clock state returned by a PTP engine.
Clock State Value
------------------------
Freerun state 1
Holdover state 2
Acquiring state 3
Freq_locked state 4
Phase_aligned state 5 "
SYNTAX INTEGER {
freerun(1),
holdover(2),
acquiring(3),
frequencyLocked(4),
phaseAligned(5)
}
PtpClockTimeInterval ::= TEXTUAL-CONVENTION
DISPLAY-HINT "255a"
STATUS current
DESCRIPTION
"This textual convention corresponds to the TimeInterval
structure indicated in Section 5.3.2 of [IEEE-1588-2008].
It will be presented in the form of a character array.
Network byte order is assumed."
REFERENCE
"Sections 5.3.2 ('TimeInterval') and 7.7.2.1 ('Timer interval
specification') of [IEEE-1588-2008]"
SYNTAX OCTET STRING (SIZE (1..255))
PtpClockTimeSourceType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The ClockQuality as specified in Sections 5.3.7,
Section 7.6.2.6, and Table 7 of [IEEE-1588-2008].
The following values are not represented in the enumerated
values.
0xF0-0xFE For use by alternate PTP profiles
0xFF Reserved
It is important to note that Section 7.1.1 of RFC 2578 allows
for gaps and for enumerated values to start at zero when
indicated by the protocol."
REFERENCE "Section 5.3.7 ('ClockQuality'), Section 7.6.2.6
('timeSource'), and Table 7 ('timeSource
enumeration') of [IEEE-1588-2008]."
SYNTAX INTEGER {
atomicClock(16), -- 0x10
gps(32), -- 0x20
terrestrialRadio(48), -- 0x22
ptp(64), -- 0x40
ntp(80), -- 0x50
handSet(96), -- 0x60
other(144), -- 0x90
internalOscillator(160) -- 0xA0
}
PtpClockTxModeType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Transmission mode.
Unicast: Using unicast communication channel.
Multicast: Using Multicast communication channel.
multicast-mix: Using multicast-unicast communication channel"
SYNTAX INTEGER {
unicast(1),
multicast(2),
multicastmix(3)
}
PtpClockType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The clock types as defined in the MIB module description."
REFERENCE
"Section 6.5.1 ('PTP device types') of [IEEE-1588-2008]."
SYNTAX INTEGER {
ordinaryClock(1),
boundaryClock(2),
transparentClock(3),
boundaryNode(4)
}
ptpbaseMIBNotifs OBJECT IDENTIFIER
::= { ptpbaseMIB 0 }
ptpbaseMIBObjects OBJECT IDENTIFIER
::= { ptpbaseMIB 1 }
ptpbaseMIBConformance OBJECT IDENTIFIER
::= { ptpbaseMIB 2 }
ptpbaseMIBSystemInfo OBJECT IDENTIFIER
::= { ptpbaseMIBObjects 1 }
ptpbaseMIBClockInfo OBJECT IDENTIFIER
::= { ptpbaseMIBObjects 2 }
ptpbaseSystemTable OBJECT-TYPE
SYNTAX SEQUENCE OF PtpbaseSystemEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of count information about the PTP system for all
domains."
::= { ptpbaseMIBSystemInfo 1 }
ptpbaseSystemEntry OBJECT-TYPE
SYNTAX PtpbaseSystemEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table entry that contains count information about a
single domain. New row entries are added when the PTP clock for
this domain is configured, while the unconfiguration of the PTP
clock removes them."
INDEX {
ptpDomainIndex,
ptpInstanceIndex
}
::= { ptpbaseSystemTable 1 }
PtpbaseSystemEntry ::= SEQUENCE {
ptpDomainIndex PtpClockDomainType,
ptpInstanceIndex PtpClockInstanceType,
ptpDomainClockPortsTotal Gauge32
}
ptpDomainIndex OBJECT-TYPE
SYNTAX PtpClockDomainType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the domain number used to create a
logical group of PTP devices. The Clock Domain is a logical
group of clocks and devices that synchronize with each other
using the PTP protocol.
0 Default domain
1 Alternate domain 1
2 Alternate domain 2
3 Alternate domain 3
4 - 127 User-defined domains
128 - 255 Reserved"
::= { ptpbaseSystemEntry 1 }
ptpInstanceIndex OBJECT-TYPE
SYNTAX PtpClockInstanceType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the instance of the clock for this
domain."
::= { ptpbaseSystemEntry 2 }
ptpDomainClockPortsTotal OBJECT-TYPE
SYNTAX Gauge32
UNITS "ptp ports"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object specifies the total number of clock ports
configured within a domain in the system."
::= { ptpbaseSystemEntry 3 }
ptpbaseSystemDomainTable OBJECT-TYPE
SYNTAX SEQUENCE OF PtpbaseSystemDomainEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of information about the PTP system for all clock modes
-- ordinary, boundary, or transparent."
::= { ptpbaseMIBSystemInfo 2 }
ptpbaseSystemDomainEntry OBJECT-TYPE
SYNTAX PtpbaseSystemDomainEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table entry that contains information about a single
clock mode for the PTP system. A row entry gets added when PTP
clocks are configured on the node."
INDEX { ptpbaseSystemDomainClockTypeIndex }
::= { ptpbaseSystemDomainTable 1 }
PtpbaseSystemDomainEntry ::= SEQUENCE {
ptpbaseSystemDomainClockTypeIndex PtpClockType,
ptpbaseSystemDomainTotals Unsigned32
}
ptpbaseSystemDomainClockTypeIndex OBJECT-TYPE
SYNTAX PtpClockType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the clock type as defined in the
textual convention description."
::= { ptpbaseSystemDomainEntry 1 }
ptpbaseSystemDomainTotals OBJECT-TYPE
SYNTAX Unsigned32
UNITS "domains"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object specifies the total number of PTP domains for this
particular clock type configured in this node."
::= { ptpbaseSystemDomainEntry 2 }
ptpbaseSystemProfile OBJECT-TYPE
SYNTAX PtpClockProfileType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object specifies the PTP profile implemented on the
system."
REFERENCE "Section 19.3 ('PTP profiles')
of [IEEE-1588-2008]"
::= { ptpbaseMIBSystemInfo 3 }
ptpbaseClockCurrentDSTable OBJECT-TYPE
SYNTAX SEQUENCE OF PtpbaseClockCurrentDSEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of information about the PTP clock currentDS for
all domains."
::= { ptpbaseMIBClockInfo 1 }
ptpbaseClockCurrentDSEntry OBJECT-TYPE
SYNTAX PtpbaseClockCurrentDSEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table entry that contains information about a single
PTP clock currentDS for a domain."
REFERENCE
"Section 8.2.2 ('currentDS data set member
specifications') of [IEEE-1588-2008]"
INDEX {
ptpbaseClockCurrentDSDomainIndex,
ptpbaseClockCurrentDSClockTypeIndex,
ptpbaseClockCurrentDSInstanceIndex
}
::= { ptpbaseClockCurrentDSTable 1 }
PtpbaseClockCurrentDSEntry ::= SEQUENCE {
ptpbaseClockCurrentDSDomainIndex PtpClockDomainType,
ptpbaseClockCurrentDSClockTypeIndex PtpClockType,
ptpbaseClockCurrentDSInstanceIndex PtpClockInstanceType,
ptpbaseClockCurrentDSStepsRemoved Unsigned32,
ptpbaseClockCurrentDSOffsetFromMaster PtpClockTimeInterval,
ptpbaseClockCurrentDSMeanPathDelay PtpClockTimeInterval
}
ptpbaseClockCurrentDSDomainIndex OBJECT-TYPE
SYNTAX PtpClockDomainType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the domain number used to create a
logical group of PTP devices."
::= { ptpbaseClockCurrentDSEntry 1 }
ptpbaseClockCurrentDSClockTypeIndex OBJECT-TYPE
SYNTAX PtpClockType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the clock type as defined in the
textual convention description."
::= { ptpbaseClockCurrentDSEntry 2 }
ptpbaseClockCurrentDSInstanceIndex OBJECT-TYPE
SYNTAX PtpClockInstanceType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object specifies the instance of the clock for this clock
type in the given domain."
::= { ptpbaseClockCurrentDSEntry 3 }
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