Chapter 4. Web Configuration & Operation
328
CHAPTER 4
WEB OPERATION & CONFIGURATION
Pri2:
Configure Clock priority 2 used by the BMC master select algorithm. The valid value is from 0 to 255.
Protocol:
This shows transport protocol used by the PTP protocol engine.
One-Way:
If true, one way measurements are used. This parameter applies only to a slave. In one-way mode no delay
measurements are performed, i.e. this is applicable only if frequency synchronization is needed. The master always
responds to delay requests.
VLAN Tag Enable:
This shows whether VLAN tagging for the PTP frames is enabled (True) or not (False).
VID:
This shows VLAN Identifier used for tagging the VLAN packets.
PCP:
This shows Priority Code Point value used for PTP frames.
Clock current Data Set:
The clock current data set is defined in the IEEE 1588 Standard. The current data set is
dynamic
stpRm:
This stands for “Steps Removed” and is the number of PTP clocks traversed from the grandmaster to the local
slave clock.
Offset from master:
This shows time difference between the master clock and the local slave clock, measured in ns.
Mean Path Delay:
This shows the mean propagation time for the link between the master and the local slave.
Filter Parameters
DelayFilter, Period, Dist:
The default delay filter is a low pass filter, with a time constant of
2**DelayFilter*DelayRequestRate. The default offset filter uses a minimum delay filter method i.e. The minimum
measured offset during Period samples is used in the calculation. The distance between two calculations is Dist
periods.
Clock Parent Data Set:
The clock parent data set is defined in the IEEE 1588 standard. The parent data set is dynamic.
Parent Port Identity:
This shows Clock identity for the parent clock, if the local clock is not a slave, the value is the
clocks own id.
Port:
This shows port ID for the parent master port.
PStat:
Parents Stats (always false).
Var:
It is observed parent offset scaled log variance.
Change Rate:
Observed Parent Clock Phase Change Rate. i.e. the slave clocks rate offset compared to the master. (unit
= ns per s).
Grand Master Identity:
Clock identity for the grand master clock, if the local clock is not a slave, the value is the clocks
own id.
Grand Master Clock Quality:
The clock quality (Clock Class, Clock Accuracy and OffsetScaledLog Variance) announced
by the grand master.
Pri1:
Clock priority 1 announced by the grand master.
Pri2:
Clock priority 2 announced by the grand master.
Содержание MSW-4424C Series
Страница 1: ...1 MSW 4424C MSW 4424CS L2 Gigabit Carrier Ethernet Switch ...
Страница 382: ......
