Supported Platforms
show ptp clock
Syntax
Release Information
Command introduced in Junos OS Release 12.2.
Command introduced in Junos OS Release 12.3 for ACX Series Routers.
Description
(ACX Series, MX80, MX240, MX480, and MX960 routers) Display the details of the clock configured on the node.
Options
This command has no options.
Required Privilege Level
view
List of Sample Output
show ptp clockshow ptp clock (ACX Series Routers)
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 slave or client 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, 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 masters to avoid confusion when the Clock Priority1 value is the same for different masters 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 primary reference. |
Frequency Traceable | When TRUE, frequency determining the timescale is traceable to a primary 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 slave to the master. |
Steps Removed | Number of boundary clocks between the local clock and the foreign master clock. |
Slave-only | Set to TRUE, when the system is used in ordinary slave clock mode; otherwise, FALSE. |
Parent Id | EUI-64 clock identifier of the immediate upstream master 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
user@host> run show ptp clockClock Details: Slot Number : 7 Default Data: Two-step Clock : FALSE Clock Identity : 00:05:85:ff:fe:73:ef:d0 Total Ports on Device : 0 Clock Class : 255 Clock Accuracy : 49 Log Variance : -12944 Clock Priority1 : 128 Clock Priority2: 128 UTC Offset : 33 Leap59 : FALSE Leap61 : FALSE Time Traceable : FALSE Frequency Traceable : FALSE Time master : 0 Delay Req Sending Time: 0 Steps Removed : 1 Slave-only : NA Parent Data: Parent Id : 00:18:0b:ff:ff:20:01:62 GMC Id : 00:18:0b:ff:ff:20:01:62 GMC Class : 52 GMC Accuracy : 254 GMC Variance : 11952 GMC Priority1 : 0 GMC Priority2 : 0 Global Data: UTC Offset : 34 Leap-59 : FALSE Leap-61 : FALSE Time traceable : FALSE Freq Traceable : FALSE Time Scale : FALSE Time master : 160
show ptp clock (ACX Series Routers)
user@host> run show ptp clockClock Details: Slot Number : 0 Default Data: Two-step Clock : FALSE Clock Identity : 84:18:88:ff:fe:c0:7a:00 Total Ports on Device : 0 Clock Class : 255 Clock Accuracy : 34 Log Variance : 15353 Clock Priority1 : 128 Clock Priority2: 128 UTC Offset : 0 Leap59 : FALSE Leap61 : FALSE Time Traceable : FALSE Frequency Traceable : FALSE Time Source : 0 Delay Req Sending Time: 0 Steps Removed : 0 Slave-only : NA Parent Data: Parent Id : 00:00:64:ff:fe:01:01:02 GMC Id : 00:00:64:ff:fe:01:01:02 GMC Class : 80 GMC Accuracy : 35 GMC Variance : 0 GMC Priority1 : 128 GMC Priority2 : 128 Global Data: UTC Offset : 0 Leap-59 : FALSE Leap-61 : FALSE Time tracable : FALSE Freq Traceable : FALSE Time Scale : FALSE Time source : 16
