FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, abbreviated terms, acronyms, and
  conventions
  3.1 Terms and definitions
  3.2 Abbreviated terms and acronyms
  3.3 Conventions
      3.3.1 General conventions
      3.3.2 Conventions for state machine definitions
      3.3.3 Conventions for PDU specification
  3.4 Reserved network addresses
4 Concepts for high availability automation networks
  4.1 Characteristics of application of automation networks
      4.1.1 Resilience in case of failure
      4.1.2 Classes of network redundancy
      4.1.3 Redundancy maintenance
      4.1.4 Comparison and indicators
  4.2 Generic network system
      4.2.1 Network elements
      4.2.2 Topologies
      4.2.3 Redundancy handling
      4.2.4 Network recovery time
      4.2.5 Diagnosis coverage
      4.2.6 Failures
  4.3 Safety
  4.4 Security
  4.5 Conformance
      4.5.1 Conformance to redundancy protocols
      4.5.2 Conformance tests
5 MRP - Media Redundancy Protocol based on a ring
  topology
  5.1 MRP Overview
  5.2 MRP Media redundancy behaviour
      5.2.1 Ring ports
      5.2.2 Media Redundancy Manager (MRM)
      5.2.3 Media Redundancy Client (MRC)
      5.2.4 Redundancy domain
      5.2.5 Usage with diagnosis and alarms
      5.2.6 Ring diagnosis
      5.2.7 Multiple MRM in a single ring
      5.2.8 BLOCKED not supported (option)
  5.3 MRP Class specification
      5.3.1 General
      5.3.2 Template
      5.3.3 Attributes
  5.4 MRP Service specification
      5.4.1 Start MRM
      5.4.2 Stop MRM
      5.4.3 State Change
      5.4.4 Start MRC
      5.4.5 Stop MRC
      5.4.6 Read MRM
      5.4.7 Read MRC
  5.5 MRP Protocol specification
      5.5.1 PDU description
      5.5.2 Protocol machines
  5.6 MRP Installation, configuration and repair
      5.6.1 Ring port parameters
      5.6.2 Ring topology parameters
      5.6.3 MRM and MRC parameters
      5.6.4 Configuration
6 PRP - Parallel Redundancy Protocol
  6.1 PRP Principle of operation
      6.1.1 Single points of failure
      6.1.2 Node structure
      6.1.3 Compatibility between singly and doubly
            attached nodes
      6.1.4 Network management
      6.1.5 Transition to non-redundant networks
      6.1.6 Duplicate handling
      6.1.7 Configuration check
      6.1.8 Network supervision
      6.1.9 Redundancy management interface
  6.2 PRP protocol specifications
      6.2.1 Installation, configuration and repair
            guidelines
      6.2.2 MAC addresses
      6.2.3 Multicast MAC addresses
      6.2.4 IP addresses
      6.2.5 Nodes
      6.2.6 Duplicate accept mode
      6.2.7 Duplicate discard mode
  6.3 PRP service specification
      6.3.1 Arguments
      6.3.2 NodesTable
      6.3.3 PRP Write
      6.3.4 PRP Read
  6.4 PRP Management Information Base
  6.5 PRP Protocol Implementation Conformance
  Statement (PICS)
7 CRP - Cross-network Redundancy Protocol
  7.1 CRP Overview
  7.2 CRP Nodes
  7.3 CRP LAN topology
  7.4 CRP Key components
      7.4.1 CRP General protocol operation
      7.4.2 CRP Statistics
      7.4.3 CRP Network_Status_Table
      7.4.4 CRP Recovery time
      7.4.5 CRP Multicast messages
      7.4.6 CRP Unicast messages
      7.4.7 CRP Redundancy information
      7.4.8 CRP Redundancy statistics
  7.5 CRP Protocol
      7.5.1 CRP Singly attached node
      7.5.2 CRP Doubly attached node
      7.5.3 CRP Installation, configuration and repair
      7.5.4 CRP LRE model attributes
      7.5.5 CRP Encoding of the DiagnosticFrame
      7.5.6 CRP Encoding of the AnnunciationFrame
      7.5.7 CRP Common protocol
      7.5.8 CRP Operational messages
      7.5.9 CRP services
8 BRP - Beacon redundancy protocol
  8.1 BRP Overview
  8.2 BRP Principle of operation
      8.2.1 General
      8.2.2 Network topology
      8.2.3 Network components
      8.2.4 Rapid reconfiguration of network traffic
  8.3 BRP stack and fault detection features
  8.4 BRP Protocol specification
      8.4.1 MAC addresses
      8.4.2 EtherType
      8.4.3 Fault detection mechanisms
      8.4.4 End node state diagram
      8.4.5 Beacon end node state diagram
  8.5 BRP Message structure
      8.5.1 General
      8.5.2 IEEE 802.3 tagged frame header
      8.5.3 Beacon message
      8.5.4 Learning_Update message
      8.5.5 Failure_Notify message
      8.5.6 Path_Check_Request message
      8.5.7 Path_Check_Response message
  8.6 BRP Fault recovery time
  8.7 BRP Service definition
      8.7.1 Supported services
      8.7.2 Common service parameters
      8.7.3 Set node parameters service
      8.7.4 Get node parameters service
      8.7.5 Add node receive parameters service
      8.7.6 Remove node receive parameters service
      8.7.7 Get node status service
Annex A (informative) Classification of networks
Annex B (informative) Availability calculations
Annex C (normative) Network management information
        base
Annex D (informative) PRP algorithm as pseudo-code
Bibliography