Time Sensitive Network (TSN) Protocols
And use in EtherNet/IP Systems
George Ditzel,
Schneider Electric
October 14, 2015

Paul Didier,
Cisco System Inc.

AgendaTime Sensitive Network (TSN) Protocols and use in
EtherNet/IP Systems
1.
2.
3.
4.

Objective and Industrial Application requirements
IEEE Time-Sensitive Networks Initiatives
TSN Systems perspective
Summary

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

2

AgendaTime Sensitive Network (TSN) Protocols and use in
EtherNet/IP Systems
1.
2.
3.
4.

Objective and Industrial Application requirements
IEEE Time-Sensitive Networks Initiatives
TSN Systems perspective
Summary

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

3

Industrial Implies a Diverse Set of Applications

IndustrialAutomation

High Traffic Mix,
Deterministic, Low
Latency, Secure,
Reliable, HighThroughput

AssetOptimization

Industrial Application Requirements
Requirement

BenefitTime synchronization

Enables common clock for transmission scheduling, correlated I/O, etc.

Latency provisions

Enables deterministic control loops

Reserved bandwidth

Enables applications to operate reliably in the presence of network congestionor network component failures

Redundancy

Enables fault tolerance due to component failures, etc.

Converged network

Enables coexistence with best effort traffic and potentially multiple industrial
protocols

Topology flexibility

Enables common industrial network topologies including line, ring, tree

Scalability

Can grow from small systems to large systems (in both node and stream count)

Security

Support safely integrating into IIoT systems

AgendaTime Sensitive Network (TSN) Protocols and use in
EtherNet/IP Systems
1.
2.
3.
4.

Objective and Industrial Application requirementsIEEE Time-Sensitive Networks Initiatives
TSN Systems perspective
Summary

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

6IEEE Time-Sensitive Networks Overview
Standard

AreaTitle

IEEE 802.1ASrev,
IEEE 1588

Timing & Synchronization

Enhancements and Performance Improvements

IEEE 802.1Qbv

Forwarding and Queuing

Enhancements for Scheduled Traffic – Time-Aware
Traffic Shaping

IEEE 802.1Qbu &IEEE 802.3br

Forwarding and Queuing

Frame Preemption and Interspersing Express TrafficIEEE 802.1Qca

Path Control and Reservation

Path Control and Reservation

IEEE 802.1Qcc

Central Configuration Method

Enhancements and Performance Improvements

IEEE 802.1Qci

Time Based Ingress Policing

Per-Stream Filtering and Policing

IEEE 802.1CB

Seamless Redundancy

Frame Replication & Elimination for Reliability

EtherNet/IP System

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

8

TSN and Time Synchronization

Bridge/Switch

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

9TSN and Time Synchronization

End Device

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

10

TSN and Time Synchronization

Hybrid Device

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

11

Time Aware Traffic Shaping

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

12Frame Preemption

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

13

Frame Preemption

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

14

Stream Reservation Protocol – SR Class A

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

15

Stream Reservation Protocol – SR Class B

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

16

Path Control and Redundancy (Seamless) - .1CB

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

17

Path Control and Redundancy (Seamless) – PRP/HSR

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

18

AgendaTime Sensitive Network (TSN) Protocols and use in
EtherNet/IP Systems
1.
2.
3.
4.

Objective and Industrial Application requirements
IEEE Time-Sensitive Networks Initiatives
TSN Systems perspective
Summary

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

19

TSN System• Summary: Distributeschedules to TSN network
elements– Schedule to be read / written inswitches is in a standard format– Defines format of schedule– Improved performance andscalability to previous SRP• Relevance: Allows standard, consistent way to set schedules for
TSN traffic in switches from various vendors.
Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

20

TSN System with Bridging TSN End-points

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

21

TSN System with Non-TSN End-points

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

22

AgendaTime Sensitive Network (TSN) Protocols and use inEtherNet/IP Systems
1.
2.
3.
4.

Objective and Industrial Application requirements
IEEE Time-Sensitive Networks Initiatives
TSN Systems perspective
Summary

Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

23

Summary

We think the ODVA should review the TSN technology
for potential adoption. Some of the enhancements, inparticular those around time synchronization, may
require changes or enhancements to ODVA capabilities
such as CIP Sync. But, the benefit of the technology tothe vendors, customers and overall industrialecosystem are significant and warrant the work tochange or enhance ODVA standards and products touse TSN.
Technical Track© 2015 ODVA, Inc.

2015 Industry Conference & 17th Annual Meeting
All rights reserved.

www.odva.org

24

THANK YOU