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eLibrary > 24/30495055 DC BS EN IEC 61375-2-5 Electronic railway equipment - Train communication network (TCN) - Part 2-5: Ethernet train backbone >

24/30495055 DC BS EN IEC 61375-2-5 Electronic railway equipment - Train communication network (TCN) - Part 2-5: Ethernet train backbone, 2024

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24/30495055 DC BS EN IEC 61375-2-5 Electronic railway equipment - Train communication network (TCN) - Part 2-5: Ethernet train backbone, 2024

30495055-NC.pdf
9_3147e_CD.pdf [Go to Page]
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols, abbreviations and conventions [Go to Page]
3.1 Terms and definitions
3.3 Symbols and abbreviations
3.4 Conventions [Go to Page]
3.4.1 Base of numeric values
3.4.2 Naming conventions
3.4.3 State diagram conventions
3.4.4 Annotation of data structures
4 ETB physical layer [Go to Page]
4.1 Train regions
4.2 Physical characteristics [Go to Page]
4.2.1 General
4.2.2 Intra vehicle physical layer
4.2.3 Inter vehicle physical layer [Go to Page]
4.2.3.1 General
4.2.3.2 Inter Vehicle at same potential
4.2.3.3 Inter Vehicle not at the same potential
4.2.4 Inter Consist physical layer
4.3 Power over Ethernet (PoE)
4.4 ETB physical architecture and redundancy [Go to Page]
4.4.1 General
4.4.2 Aggregated architecture [Go to Page]
4.4.2.1 Link aggregation architecture
4.4.2.2 Functions [Go to Page]
4.4.2.2.1 Data flow principles
4.4.2.2.2 Configuration
4.4.2.2.3 Reconfiguration
4.4.2.2.4 Compliance
4.4.3 Segregated architecture [Go to Page]
4.4.3.1 A-Plane/B-Plane concept
5 ETB data link layer
6 ETB network layer: IPv4 subnets definition [Go to Page]
6.1 General
6.2 IP mapping introduction
6.3 Topology [Go to Page]
6.3.1 General
6.3.2 Closed train
6.3.3 Train compositions
6.4 Network IP address map [Go to Page]
6.4.1 Global IPv4 address space
6.4.2 Train IP group addresses (multicast)
6.4.3 Train subnet definition [Go to Page]
6.4.3.1 General
6.4.3.2 Train subnet decomposition
6.4.3.3 CN identification, « Consist Id » [Go to Page]
6.4.3.3.1 General
6.4.3.3.2 Single Consist Network (CN) per Consist
6.4.3.3.3 Multiple CN per Consist
6.4.3.3.4 ETBN redundancy
6.4.3.4 ETBN to CN connection (aggregated architecture)
6.4.4 Train IP address map summary
6.5 Particular hosts IP addresses [Go to Page]
6.5.1 ETBN (Ethernet Train Backbone Node) [Go to Page]
6.5.1.1 General
6.5.1.2 ETBN ETB IP address
6.5.1.3 ETBN CN IP address
6.5.2 Hosts on train subnet
6.5.3 Host inside a closed train [Go to Page]
6.5.3.1 General
6.5.3.2 IP relative addressing plan (optional)
6.6 Some use cases
6.7 Dynamic IP routing management [Go to Page]
6.7.1 Unicast routes
6.7.2 Multicast routes [Go to Page]
6.7.2.1 General
6.7.2.2 Multicast Groups definition
6.7.2.3 ETB-ECN multicast routing
6.7.3 Multiple domains routing [Go to Page]
6.7.3.1 Inter domain inter consist communication
6.7.3.2 Inter domain intra consist
6.7.3.3 Same domain inter consist
7 ETB Transport layer
8 ETB Train Inauguration: TTDP [Go to Page]
8.1 Contents of this clause
8.2 Objectives and assumptions [Go to Page]
8.2.1 Goals
8.2.2 Out of scope
8.2.3 Assumptions
8.3 ETBN settings [Go to Page]
8.3.1 ETB switch port states
8.3.2 Node settings [Go to Page]
8.3.2.1 General
8.3.2.2 Bypass setting
8.3.2.3 NOTE: In segregated architecture, by-pass relay on ETBN ports is prohibited.Intermediate node setting
8.3.2.4 End Node setting
8.4 General behaviour [Go to Page]
8.4.1 Train Inauguration process [Go to Page]
8.4.1.1 Introduction
8.4.1.2 Train Inauguration process in aggregated architecture
8.4.1.3 Train Inauguration process in segregated architecture
8.4.2 TTDP HELLO
8.4.3 TTDP TOPOLOGY
8.4.4 TTDP HELLO Relay [Go to Page]
8.4.4.1 TTDP HELLO Relay Mechanism
8.4.4.2 Inner-Consist HELLO
8.4.5 VLAN Reconfiguration
8.5 ETBN Inauguration state diagram [Go to Page]
8.5.1 General
8.5.2 Actions
8.5.3 Transitions
8.5.4 TTDP HELLO Relay state diagram [Go to Page]
8.5.4.1 TTDP HELLO Relay Mechanism
8.5.4.2 Transitions
8.5.5 VLAN Reconfiguration state diagram [Go to Page]
8.5.5.1 VLAN reconfiguration Process
8.5.5.2 State
8.5.5.3 Conditions
8.5.5.4 Actions
8.6 ETBN peers discovery [Go to Page]
8.6.1 Internal peers detection
8.6.2 External peers detection
8.6.3 Switch port states handling
8.6.4 ETB lines statuses
8.7 TTDP messages description [Go to Page]
8.7.1 General
8.7.2 Convention
8.7.3 TTDP frame tagging
8.7.4 Transport and addressing
8.7.5 TTDP HELLO and IH frame
8.7.6 TTDP TOPOLOGY frame
8.7.7 TTDP SELECTIVE frame (option)
8.8 TTDP data structures [Go to Page]
8.8.1 Connectivity Vector
8.8.2 ETBN Vector
8.8.3 Connectivity Table
8.8.4 Connectivity Table CRC
8.8.5 Train network directory
8.8.6 Train network directory CRC (Topology Counter)
8.8.7 Corrected topology
8.9 TTDP frames timing [Go to Page]
8.9.1 TTDP HELLO
8.9.2 TTDP TOPOLOGY
8.9.3 TTDP SELECTIVE
8.10 Inauguration Train Application interface
8.11 Degraded modes [Go to Page]
8.11.1 Late insertion ETBN
8.11.2 Losing ETBN
8.11.3 End ETBN failure and partial topology counter
8.12 Some discovery timing [Go to Page]
8.12.1 ETBN wakeup
8.12.2 ETBN failure
8.12.3 Consist coupling
9 ETB ETBN redundancy
10 ETB physical train naming convention (optional) [Go to Page]
10.1 General
10.2 ETB Train domain
10.3 Hostname
11 ETB Quality of Service [Go to Page]
11.1 Contents of this clause
11.2 Frame forwarding [Go to Page]
11.2.1 ETBN switching rate
11.2.2 No Head-of-Line blocking
11.2.3 Switching priorities
11.2.4 Switching queuing scheme
11.3 Priority of Inauguration frames
11.4 ETB ingress rate limiting
11.5 ETB egress rate shaping
11.6 ETB data classes
12 ETB Management and monitoring [Go to Page]
12.1 Contents of this clause
12.2 ETB Management and monitoring via SNMP
12.3 ETB Management and monitoring: NetConf
13 ETB Application interface [Go to Page]
13.1 Contents of this clause
13.2 Abstract communication model
13.3 ETB Process Data and Message Data protocols
13.4 ETB protocol transparency
13.5 ETBN interfaces [Go to Page]
13.5.1 Application
13.5.2 Maintenance and monitoring [Go to Page]
13.5.2.1 Network monitoring via SNMP
13.5.2.2 Network monitoring via NetConf
13.5.2.3 ETBN Monitoring
13.5.2.4 ETBN Maintenance
14 ETB conformity statement
15 Cybersecurity
Annex A (normative) Summary of ETB sizing parameters
Annex B (normative) Physical topology building algorithm
Annex C (normative) TTDP MIB definition
Annex D (normative) TTDP YANG Data Model definition
Annex E (informative) Application notes on multiple domains routing [Go to Page]
E.1 Application notes at architecture level
E.2 Communications considerations and use cases
E.3 Multicast Groups, Routing and Gateways
E.4 Unicast Routing and Gateways
Annex F (informative) Interoperability Conditions [Go to Page]
F.1 Interoperability conditions among aggregated architecture options
F.2 Interoperability conditions among segregated architecture options
Annex G (Normative) Normal operation and failures recovery of VLAN reconfiguration [Go to Page]
G.1 Introduction
G.2 VLAN reconfiguration examples [Go to Page]
G.2.1 Normal scenario
G.2.2 Single ETB Line Failure
G.2.3 Single ETBN device Failure
G.2.4 Two ETBN fails at the same time.
G.2.5 Two ETBN line fails at the same time.
Bibliography [Go to Page]

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