Description
White Rabbit (WR) is a solution to the generic problem of transferring
data in a fast, deterministic and safe manner. Although its initial
scope is mainly targeted at timing systems for experimental physics
facilities, care has been taken to come up with a solution which is as
generic as possible. The aim is to be able to synchronize ~1000 nodes
with sub-ns accuracy over fiber and copper lengths of up to 10 km. The
main technologies used are physical layer syntonization (clock recovery)
and PTP (IEEE 1588). Compliance with established standards such as
Ethernet and PTP is a key goal of the project.
This OHR project is both the home of the hardware design for the White
Rabbit switch (fully open hardware licensed under the CERN Open
Hardware Licence) and an
umbrella for general WR-related documents and discussion. In particular,
the publications page contains key working documents
such as the White Rabbit specification as well as publications,
presentations and other useful material. Several potential
users have expressed interest in WR, and some commercial
companies are collaborating in design tasks and will
commercialize the results.
The WR switch software is dealt with in a separate subproject.
Seven Solutions, one of the commercial companies involved, has prepared a nice web page about WR and other associated developments.
Contacts
Commercial producers of switches
- White Rabbit Solution Seven Solutions, Spain
- WRS-3/18 Creotech, Poland
General question about project
- Erik van der Bij - CERN
Status
Date | Event |
---|---|
15-02-2008 | White Rabbit workshop 1. Project start. |
27-10-2008 | White Rabbit workshop 2. |
20-07-2009 | White Rabbit workshop 3. Demonstration of a stabilized link. |
01-04-2010 | Switch MCH card v2 PCB ready. |
24-06-2010 | Mini-backplane PCB ready. |
20-09-2010 | Kick-off of 1st two-month development cycle. |
22-09-2010 | Enclosure for mini-backplane and MCH v2 ready. |
10-12-2010 | First developer meeting. Basic Ethernet switching demonstrated. |
14-04-2011 | 4th WR Workshop. PTP working on a WR node. |
19-09-2011 | 5th WR Workshop. |
22-03-2012 | 6th WR Workshop. |
Documentation
- White Rabbit related papers
- Which SFP transceiver and fibre type to use for White Rabbit
- White Rabbit Node Reference design
- White Rabbit in Wikipedia
Javier Serrano, Erik van der Bij - 25 June 2012