N2 IEEE1588 - Precise Time Protocol

This course describes the PTP protocol and provides implementation examples


Objectives
	The course explains the IEEE1588 standard and details some implementation solutions
	The BMC algorithm is described
	The course emphasizes the way to implement IEEE1588 on an Ethernet system and highlights the boundary between software and hardware
	The new features of P1588 (aka IEEE1588v2) are studied
A more detailed course description is available on request at info@ac6-formation.com


Prerequisites
	Knowledge of Ethernet and switching is needed, see our course reference N1

Plan


INTRODUCTION
	Objectives of the standard
	The need for synchronization
	Definitions
PTP CLOCK SYNCHRONIZATION MODEL
	The PTP messages
	PTP systems, acyclic graph structure
	Message filtering
	Clock properties, stratum, identifier
	Subdomain properties
PTP PROTOCOL SPECIFICATION
	Model of a subdomain of PTP clocks
	State behavior of clocks
	Protocol engine state machine
	Clock data sets, initialisation properties
	Messaging and internal event behavior of clocks
	Sync-event time-out mechanism
	Synchronization changes of the local clock
	Best Master Clock algorithm
	Clock variance computation
	Local clock synchronization
	Physical requirements for PTP implementations
	Management messages
ETHERNET IMPLEMENTATION OF PTP
	Ethernet frame type
	IP header and multicast addresses
	UDP header, assigned port numbers
	UDP payload, organization of PTP messages
FREESCALE IMPLEMENTATION OF PTP
	eTSEC Ethernet MAC
	Time-stamping
	Clock correction
	Trigger inputs
	Alarms
P1588
	Mapping to DeviceNet and Ethernet layer-2
	Prevention of error accumulation in cascaded topologies
	Rapid network reconfiguration
	Extensions to enable implementation of redundant systems
	Optional shorter frame

Durée	Prix	Calendrier
1 jours	700 €