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23.4. Using the PTP Management Client
The
PTP management client, pmc, can be used to obtain additional information from ptp4l as follows:
Setting the
-b option to zero limits the boundary to the locally running ptp4l instance. A larger boundary value will retrieve the information also from PTP nodes further from the local clock. The retrievable information includes:
stepsRemovedis the number of communication paths to the grandmaster clock.offsetFromMasterand master_offset is the last measured offset of the clock from the master in nanoseconds.meanPathDelayis the estimated delay of the synchronization messages sent from the master in nanoseconds.- if
gmPresentis true, thePTPclock is synchronized to a master, the local clock is not the grandmaster clock. gmIdentityis the grandmaster's identity.
For a full list of pmc commands, type the following as
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Additional information is available in the
root:
pmc help
~]# pmc help
pmc(8) man page.