tmnxPtpMasterClockGMClockId 1.3.6.1.4.1.6527.3.1.2.74.3.2.3

The value of tmnxPtpMasterClockGMClockId indicates the Grand Master Clock Identity for the Master Clock. This corresponds to the parentDS.grandmasterIdentity data set member defined in IEEE Std 1588-2008.