Alcatel-Lucent 7450 ESS-7 - Figure 20: Boundary Clock

Page 242 7450 ESS OS Basic System Configuration Guide
If the profile setting for the clock is ieee1588-2008, the precedence order for the best master
selection algorithm is as follows:
• priority1
• clock class
• clock accuracy
• PTP variance (offsetScaledLogVariance)
• priority2
• clock identity
• steps removed from the grandmaster
The 7450 ESS sets its local parameters as follows:
If the profile setting for the clock is
itu-telecom-freq (ITU G.8265.1 profile), the precedence
order for the best master selection algorithm is:
• clock class
•priority
Table 25: Local Clock Parameters When Profile is set to ieee1588-2008
Parameter Value
clockIdentity Chassis MAC address following the guidelines of 7.5.2.2.2 of
IEEE 1588
clockClass 13 – router configured as ordinary clock master and is locked to an
external reference
14 – router configured as ordinary clock master and in holdover after
having been locked to an external source
248 – router configured as ordinary clock master and is in free run or
the router is configured as a boundary clock
255 – router configured as ordinary clock slave
clockAccuracy FE - Unknown
offsetScaledLogVariance FFFF – not computed