Industrial Internet Connectivity Framework | Page 4

4.2.1.1

Peer-to-Peer vs . Broker ........................................................................................... 33

4.2.1.2

Data-Centric vs . Device / App-Centric ...................................................................... 33

4.2.1.3

Explicit vs . Implicit Governance .............................................................................. 34

4.2.2

Data Considerations .......................................................................................................... 34

4.2.2.1

Content-Based Selection ......................................................................................... 34

4.2.2.2

Time-Based Selection .............................................................................................. 34

4.2.3

Performance Considerations ............................................................................................. 35

4.2.3.1

Real-Time ................................................................................................................ 35

4.2.3.2

Latency and Jitter vs . Throughput ........................................................................... 35

4.2.4

Scalability Considerations .................................................................................................. 35

4.2.4.1

Data Objects ............................................................................................................ 35

4.2.4.2

Apps ......................................................................................................................... 36

4.2.5

Availability Considerations ................................................................................................ 36

4.2.5.1

Redundancy ............................................................................................................. 36

4.2.5.2

Recovery .................................................................................................................. 36

4.2.6

Deployment Considerations .............................................................................................. 37

4.2.6.1

Platform Constraints ............................................................................................... 37

4.2.6.2

Incremental Upgrades ............................................................................................. 37

5 Connectivity Transport Layer ........................................................................................... 38

5.1

Core Functions ................................................................................................................... 38

5.1.1

Messaging Protocol ........................................................................................................... 38

5.1.2

Communication Modes ..................................................................................................... 39

5.1.3

Endpoint Addressing .......................................................................................................... 39

5.1.4

Connectedness .................................................................................................................. 39

5.1.5

Prioritization ...................................................................................................................... 40

5.1.6

Timing & Synchronization .................................................................................................. 40

5.1.7

Message Security ............................................................................................................... 40

5.2

Typical Considerations ....................................................................................................... 41

5.2.1

Network Layer Considerations .......................................................................................... 41

5.2.1.1

Topology .................................................................................................................. 41

5.2.1.2

Span ......................................................................................................................... 41

5.2.1.3

Segmentation .......................................................................................................... 41

6 How to Assess a Connectivity Technology ? ...................................................................... 42

6.1

General Info ...................................................................................................................... 42

6.2

Business Viewpoint ........................................................................................................... 43

6.2.1

Purpose .............................................................................................................................. 43

6.2.2

Pedigree ............................................................................................................................. 43

6.2.3

Variants .............................................................................................................................. 43

6.2.4

Maturity ............................................................................................................................. 43

6.2.5

Stability .............................................................................................................................. 43

6.2.6

Standards Body .................................................................................................................. 43

6.2.7

Openness ........................................................................................................................... 43

6.3

Usage Viewpoint ............................................................................................................... 43

6.3.1

Architecture ....................................................................................................................... 43

6.3.2

Technology Options ........................................................................................................... 43

6.3.3

Applications ....................................................................................................................... 43