Terms and Acronyms

Enhanced PTP User Guide (UG1602)

Document ID
Release Date
1.1 English

The following table lists terms used in the guide and their definitions.

Table 1. Terms and Definitions
Term Definition
1PPS 1 Pulse Per Second
LACP Link Aggregation Control Protocol, part of IEEE-802.3ad

Local Reference Clock

The active clock to which all other clocks, on a PTP enabled server, are synchronized

MTIE Maximum Time Interval Error
NSM (Meinberg) NetSync Monitor
NTP Network Time Protocol
PF PCIe® Physical Function
PHC PTP Hardware Clock
PID Proportional, Integral, Differential filter
PPB Parts Per Billion
PPM Parts Per Million
PTP Precision Time Protocol
ptpd2 An implementation of IEEE-1588-2008 (PTP version 2)

Solarflare Enhanced PTP daemon

An implementation of IEEE-1588-2008 (PTP version 2)


Type, Length, Value

An element of a protocol or signaling message

UUID Universally Unique Identifier
VF PCIe Virtual Function
VLAN Virtual Local Area Network
VM Virtual Machine