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Report from ISPCS 2014
International IEEE Symposium on Precision Clock
Synchronization for Measurement, Control and
Communication
Organizer:
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
Plug Fest
Plug Fest
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
We have learned a lot about.....
Customs
Plug Fest
Our WR gear was stuck in customs
- If you bring it yourself → 24h later you get it.
- If you send it → You don't get it
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
White Rabbit in the Plug Fest and Goals
Plug Fest
Correctness of Pdelay sync mechanism in PPSI
OK
WR P2P Transparent Clock
OK
Performance of new non-WR PPSI servo
IPv4
with minor issues
OK
OK
with minor issues
PTP Domains
WRPTP over SyncE switch
Cesar Prados, GSI
8th White Rabbit Workshop
OK
?
Report from ISPCS 2014
Plug Fest Overview
29 Participants, the majority are companies
Clocks
 Grandmasters
 GPS
 Software Protocol Stacks
 IP Cores
 Test & Measure equipment

Plug Fest
Protocols
Layer 2
IPv4
Layer2
HSR/PRP
Profiles
Default
Telecom
Power
PTP
One Step
Two Step
E2E
P2P
Uni-Multicast
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
SyncE switch between WR Devices
Plug Fest
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
PTP Master SFP connected to a WR Slave Port
Plug Fest
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
Best Paper Award:
Conference
“Using a multi-source NTP watchdog to increase the robustness of PTPv2
in Financial Industry networks”
Interesting Papers:
“Precise Clock Parameter Estimation and Ground Truth Capture for Clock
Error Measurements using FPGAs”
“Experimental verification of the egress and ingress latency correction in
PTP clocks”
“PPSi – A Free Software PTP Implementation”
Cesar Prados, GSI
8th White Rabbit Workshop
Report from ISPCS 2014
Notes
Best Paper Award:
Al single point of failure in the PTP protocol that affects its
robustness, and ongoing regulatory requirements
In finance markets using a multi-source NTP watchdog
Conference
Interesting Papers:
1)propose a mechanism to estimate clock parameters between
two clocks using TDC. Simultaneously, we have proposed a
ground truth capture methodology for clock error
measurements.
2) present a measurement setup that enables the direct
measurement of both the ingress and egress latencies of a PTP
clock.
Cesar Prados, GSI
8th White Rabbit Workshop