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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.
- ifgmPresentis 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 helppmc(8) man page.