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show ptp clock

Syntax

Description

(ACX Series, MX80, MX240, MX480, MX960, PTX10008 routers, and QFX Series switches) Display the details of the clock configured on the node.

Options

This command has no options.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show ptp clock command. Output fields are listed in the approximate order in which they appear.

Table 1: show ptp clock Output Fields

Field Name

Field Description

Slot Number

Number of the FPC or MIC slot.

Two-step Clock

Whether the clock provides time information which is a combination of an event message and a subsequent general message: True or False.

Clock Identity

Clock identity of the timeReceiver or timeReceiver as defined in IEEE 1588.

Total Ports on Device

Total number of PTP ports on the router.

Clock Class

Attribute of an ordinary or boundary clock that denotes the traceability of the time or frequency distributed by the grandmaster clock.

Clock Accuracy

Indicates the expected accuracy of a clock when it is the grandmaster clock, or in the event it becomes the grandmaster.

Log Variance

Represents an estimate of the variations of the local clock when it is not synchronized via PTP to another clock.

Clock Priority1

Priority value of the clock. Lower value takes precedence.

Clock Priority2

Prioritize the primaries to avoid confusion when the Clock Priority1 value is the same for different primaries in a network.

UTC Offset

Offset between International Atomic Time (TAI ) and Coordinated Universal Time (UTC) times. The value is 34 seconds as of January 2012.

Leap59

When TRUE, the last minute of the current UTC day has only 59 seconds (instead of the 60 SI seconds).

Leap61

When TRUE, the last minute of the current UTC day has 61 seconds (instead of the 60 SI seconds).

Time Traceable

When TRUE, the timescale and the UTC offset are traceable to a timeTransmitter reference.

Frequency Traceable

When TRUE, frequency determining the timescale is traceable to a timeTransmitter reference.

Time Source

Time source external to the Precision Time Protocol (PTP), which provides time and/or frequency as appropriate. The time source is traceable to the international standards laboratories maintaining clocks that form the basis for the International Atomic Time (TAI) and Universal Coordinated Time (UTC) timescales. Examples of these are Global Positioning System (GPS), NTP, and National Institute of Standards and Technology (NIST) timeservers.

Delay Req Sending Time

Interval in seconds between the delay-request messages sent by the timeReceiver to the timeTransmitter.

Steps Removed

Number of boundary clocks between the local clock and the foreign timeTransmitter clock.

Slave-only

Set to TRUE, when the system is used in ordinary timeReceiver clock mode; otherwise, FALSE.

Parent Id

EUI-64 clock identifier of the immediate upstream timeTransmitter clock.

GMC Id

EUI-64 clock identifier of the grandmaster clock.

GMC Class

Denotes the grandmaster clock’s traceability of the distributed time or frequency.

GMC Accuracy

Indicates the expected accuracy of the grandmaster clock.

GMC Variance

Represents an estimate of the variations of the grandmaster clock.

GMC Priority1

Priority1-value of the grandmaster clock.

GMC Priority2

Priority2-value of the grandmaster clock.

Sample Output

show ptp clock

show ptp clock (ACX Series Routers)

show ptp clock (QFX5120-48T)

show ptp clock detail (PTX10008)

Release Information

Command introduced in Junos OS Release 12.2.