6.6.3 UAFX Networking Facets

6.6.3.1 Overview

This clause defines facets for Bridge Components, End Station Components, IA-stations, and UAFX Stations illustrated in Figure 5.

6.6.3.2 Base Bridge Component Facet

Table 35 describes the details of the Base Bridge Component Facet.

This Facet constitutes a minimal basis that can be relied on for any network consisting of UAFX Stations, including inherited functionality from the IA-station Facet, handling of VLAN IDs and priorities, and Remote Management. It also introduces minimum quantities for queues and VLAN IDs.

6.6.3.3 Advanced Bridge Component Facet

Table 36 describes the details of the Advanced Bridge Component Facet.

This Facet builds on the Base Bridge Component Facet and adds requirements for implementing more advanced network infrastructure capabilities. In particular, it requires time synchronization, mechanisms for network boundary protection, expedited traffic for real-time applications (preemption), and engineered loop prevention. It also introduces minimum quantities for queues, preemption fragment size, and egress buffer size.

6.6.3.4 Full Bridge Component Facet

Table 37 describes the details of the Full Bridge Component Facet.

This Facet constitutes the full feature and maximum required quantity facet for network infrastructure and builds on the Advanced Bridge Component Facet. It is designed to carry all industrial automation traffic types and guarantee full multi-vendor interoperability. In particular, it introduces enhancements for scheduled traffic and associated quantities.

6.6.3.5 End Station Component Facet

Table 38 describes the details of the End Station Component Facet.

This Facet describes the functionality needed for sending and receiving network traffic, in particular, tagged Ethernet frames.

6.6.3.6 IA-station Facet

Table 39 describes the details of the IA-station Facet.

This Facet includes industrial automation networking component requirements. In particular, it mandates an End Station Component Facet and adds the option to include Bridge Component Facets (via the UAFX EthernetIAStation ContainsBridge ConformanceUnit). It also adds functionality for Topology Discovery, Remote Management and Time Synchronization.

6.6.3.7 UAFX Station 2024 Facet

This Facet supersedes the UAFX Station Facet.

Table 40 describes the details of the UAFX Station 2024 Facet.

This Facet includes all networking functionality needed for UAFX component implementation, including an IA-station and network interface representation in the Information Model and its default configuration.