About This Document; About Wr-Z16 - Safran WR-Z16 User Manual

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1.1 About this Document

1.1

About this Document

This document is the main user guide of the WR-Z16 Model . It describes the

essential information about the WR-Z16 hardware, its features, and configuration

options.

It is designed to allow users who have their first contact with the device to easily

connect it to a management network and distribute precise timing (PTP or White

Rabbit (WR), for example) through optical interfaces. It also provides advanced

tips for expert users and/or details how to match the security policies defined at

your company.

The set of official manuals also includes the WRZ-OS API guide for complete

documentation about your WR-Z16.

1.2

The WR-Z16 is the reliable precise time fan-out for the most demanding time dis-

tribution applications on 1G Ethernet-based networks.

The WR-Z16 is a standalone device with 16 SFP connectors which provides sub-

nanosecond accuracy time over plug-and-play fiber links. It provides very precise

IEEE 1588 (PTP) in all its optical interfaces and supports NTP interoperability.

Picosecond- level frequency distribution is available through digital clock. The

WR-Z16 incorporates failover mechanisms which combine multi-source redund-

ancy and holdover capabilities to ensure continued operation.

Its design is optimized for datacenter environment, where it is typically located in

the top of the hierarchy level of the distribution network. The WR-Z16 can obtain

the external time reference from its 10MHz and 1PPS SMA inputs, from another

White Rabbit device through the SFP ports or it can work as a free running mas-

ter device for the network.

A typical intra-datacenter network topology is shown in the figure below, where

the WR-Z16 is working as the grandmaster and is the key element for distributing

the timing through WR to each cabinet of the datacenter. Different end nodes

are included in the diagram to illustrate the interoperability with different inter-

faces.

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WR-Z16 User Manual Rev. v5.0

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