IEC 61375-2-8:2021

Electronic railway equipment - Train communication network (TCN) - Part 2-8: TCN conformance test

IEC 61375-2-8:2021 applies to all equipment and devices implemented according to IEC 61375-2-3:2015, IEC 61375-2-5:2014 and IEC 61375-3-4:2014, i.e. it covers the procedures to be applied to such equipment and devices when the conformance should be proven. The applicability of this document to a TCN implementation allows for individual conformance checking of the implementation itself, and is a pre-requisite for further interoperability checking between different TCN implementations.

General Information

• Status: Published
• Publication Date: 24-Oct-2021
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: TC 9 - Electrical equipment and systems for railways
• Drafting Committee: WG 43 - TC 9/WG 43
• Current Stage: PPUB - Publication issued
• Start Date: 05-Nov-2021
• Completion Date: 25-Oct-2021

Standards Content (Sample)

IEC 61375-2-8
®

Edition 1.0 2021-10
INTERNATIONAL
STANDARD

colour
inside


Electronic railway equipment – Train communication network (TCN) –
Part 2-8: TCN conformance test
IEC 61375-2-8:2021-10(en)

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IEC 61375-2-8

®


Edition 1.0 2021-10




INTERNATIONAL



STANDARD








colour

inside










Electronic railway equipment – Train communication network (TCN) –

Part 2-8: TCN conformance test


























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 45.060.01 ISBN 978-2-8322-1035-5




  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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CONTENTS
FOREWORD . 14
INTRODUCTION . 16
1 Scope . 17
2 Normative references . 17
3 Terms, definitions, symbols and abbreviated terms . 19
3.1 Terms and definitions . 19
3.2 Symbols and abbreviated terms . 19
4 Conformance test: approach, requirements and boundaries . 20
4.1 Approach . 20
4.1.1 General . 20
4.1.2 Requirements . 20
4.1.3 Requirements declaration statements for an Item Under Test (IUT) . 22
4.2 Boundaries . 23
4.2.1 General . 23
4.2.2 Basic interconnection tests . 24
4.2.3 Capability tests . 24
4.2.4 Behaviour tests . 25
4.2.5 Conformance resolution tests . 25
4.2.6 Interpretation of clauses/subclauses and statements . 26
4.2.7 Relation to interoperability . 27
4.2.8 Relation to performance test . 28
4.2.9 Definition of test cases . 28
4.3 Conformance assessment process outline . 29
4.3.1 General . 29
4.3.2 Analysis of results, outcomes and verdicts . 29
4.4 Mapping of IUT types to conformance test suites . 30
5 Basic interface test . 31
5.1 Scope . 31
5.2 PICS pro-forma . 31
5.2.1 General . 31
5.2.2 PICS Tables . 31
5.3 Testing framework . 33
5.4 Physical layer test . 33
5.4.1 Test purpose . 33
5.4.2 Inspection of the Hardware Ethernet interface . 33
5.4.3 Inspection of the mechanical Ethernet interface construction . 33
5.4.4 Check of electrical Ethernet interface design . 34
5.4.5 Check of Ethernet interface characteristics . 34
5.4.6 Ethernet signal wave form test (IEEE standard) . 34
5.4.7 Ethernet signal wave form test (amplified signals, optional) . 34
5.4.8 Auto-Crossover- and Auto-Sensing-Test (only for switches) . 34
5.5 Basic communication protocol test . 35
5.5.1 Test purpose . 35
5.5.2 Simple communication test . 35
5.5.3 UDP rising payload test (only for End Devices) . 35
5.5.4 TCP rising payload test (only for End Devices) . 35

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IEC 61375-2-8:2021 © IEC 2021 – 3 –
5.5.5 UDP long term test (only for End Devices) . 35
5.6 Communication reliability tests . 35
5.6.1 Test purpose . 35
5.6.2 Burst immunity test . 35
5.6.3 Ethernet interface isolation test . 36
6 Conformance test of End Device . 36
6.1 General . 36
6.2 Related requirements . 37
6.3 IUT and Test scope . 37
6.4 PICS Pro-forma . 38
6.4.1 General . 38
6.4.2 PICS Tables . 38
6.5 Testing framework . 44
6.6 Test Suite IEC 61375-2-3 . 46
6.6.1 Test case TCCT23ED_001 . 46
6.6.2 Test case TCCT23ED_002 . 47
6.6.3 Test case TCCT23ED_003 . 49
6.6.4 Test case TCCT23ED_004 . 50
6.6.5 Test case TCCT23ED_005 . 51
6.6.6 Test case TCCT23ED_006 . 52
6.6.7 Test case TCCT23ED_007 . 53
6.6.8 Test case TCCT23ED_008 . 54
6.6.9 Test case TCCT23ED_009 . 55
6.7 Test Suite IEC 61375-2-5 . 55
6.7.1 Test case TCCT25ED_001 . 55
6.7.2 Test case TCCT25ED_002 . 56
6.7.3 Test case TCCT25ED_003 . 57
6.7.4 Test case TCCT25ED_004 . 58
6.7.5 Test case TCCT25ED_005 . 59
6.7.6 Test case TCCT25ED_006 . 60
6.7.7 Test case TCCT25ED_007 . 61
6.7.8 Test case TCCT25ED_008 . 62
6.7.9 Test case TCCT25ED_009 . 63
6.7.10 Test case TCCT25ED_010 . 64
6.8 Test Suite IEC61375-3-4 . 65
6.8.1 Test case TCCT34ED_001 . 65
6.8.2 Test case TCCT34ED_002 . 66
6.8.3 Test case TCCT34ED_003 . 67
6.8.4 Test case TCCT34ED_004 . 68
6.8.5 Test case TCCT34ED_005 . 69
6.8.6 Test case TCCT34ED_006 . 70
6.8.7 Test case TCCT34ED_007 . 71
6.8.8 Test case TCCT34ED_008 . 72
6.8.9 Test case TCCT34ED_009 . 73
6.8.10 Test case TCCT34ED_010 . 74
6.8.11 Test case TCCT34ED_011 . 75
6.8.12 Test case TCCT34ED_012 . 76
6.8.13 Test case TCCT34ED_013 . 77
6.8.14 Test case TCCT34ED_014 . 78

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6.8.15 Test case TCCT34ED_015 . 79
6.8.16 Test case TCCT34ED_016 . 80
6.8.17 Test case TCCT34ED_017 . 81
6.8.18 Test case TCCT34ED_018 . 82
6.8.19 Test case TCCT34ED_019 . 83
6.8.20 Test case TCCT34ED_020 . 84
6.8.21 Test case TCCT34ED_021 . 85
6.8.22 Test caseTCCT34ED_022 . 86
7 Conformance test of ECN-equipped consist . 86
7.1 Scope . 86
7.2 Related requirements . 86
7.3 PICS Pro-forma . 86
7.3.1 General . 86
7.3.2 PICS tables . 87
7.4 Test cases . 93
7.4.1 General . 93
7.4.2 Recovery in case of network failure . 94
7.4.3 IP address assignment via DHCP . 96
7.4.4 Name (TCN-URI address) resolution via DNS . 97
7.4.5 Switch basic functions . 98
7.4.6 Priority levels . 99
7.4.7 Ingress rate limiting . 99
7.4.8 Egress rate shaping . 100
7.4.9 Untagged/tagged frames. 100
7.4.10 Switching and routing performance (optional) . 101
7.4.11 NTP support . 102
7.4.12 Switch management . 102
7.4.13 Network management via SNMP . 103
7.4.14 ECSP Interface (optional) . 104
7.4.15 TTDB manager interface (optional) . 105
7.4.16 DNS TCN interface (optional) . 105
7.4.17 ETBN control interface (optional) . 106
8 Conformance test of ETBN . 106
8.1 Test scope . 106
8.1.1 General . 106
8.1.2 References . 106
8.2 PICS Pro-forma . 107
8.2.1 General . 107
8.2.2 PICS tables . 107
8.3 Test cases . 115
8.3.1 Testing framework . 115
8.3.2 Common Consist Topologies . 118
8.3.3 Test Suite: ETB port settings . 121
8.3.4 Test Suite: ETB Line Status and Link Aggregation management . 123
8.3.5 Test Suite: TTDP HELLO format and content . 130
8.3.6 Test Suite: Unicast address assignment and unicast routing . 134
8.3.7 Test Suite: IP Multicast forwarding. 137
8.3.8 Test Suite: TOPOLOGY frame format and basic functionality . 148
8.3.9 Test Suite: Physical topology management and calculation . 152

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IEC 61375-2-8:2021 © IEC 2021 – 5 –
8.3.10 Test Suite: Logical connectivity management and calculation . 156
8.3.11 Test Suite: Failing/loss of node(s) . 162
8.3.12 Test Suite: Late/recovered node(s) . 166
9 Conformance test of TRDP . 172
9.1 General . 172
9.2 Related requirements . 173
9.3 SUT and Test scope . 173
9.4 PICS Pro-forma . 173
9.4.1 General . 173
9.4.2 PICS Tables . 173
9.5 Message Data test . 187
9.5.1 Testing framework . 187
9.5.2 Communication Model Test . 188
9.5.3 Communication Pattern and Addressing Test . 192
9.5.4 MD-PDU Test . 204
9.5.5 TRDP Layer Service Primitives Test . 206
9.5.6 TRDP Layer Filtering Rules Test. 209
9.5.7 Caller TRDP Layer Test . 214
9.5.8 Replier TRDP Layer Test . 234
9.5.9 TCP Connection Handling Test . 249
9.5.10 Message Data Echo Server Test . 257
9.6 Process Data test . 258
9.6.1 General . 258
9.6.2 Test setup . 258
9.6.3 PD push pattern test cases . 259
9.6.4 PD pull pattern test cases . 280
10 SDTv2 Conformance Test . 298
10.1 Scope . 298
10.1.1 General . 298
10.1.2 Related requirements . 298
10.1.3 Terms and abbreviations . 298
10.1.4 Test scope . 298
10.2 PICS Pro-forma . 299
10.2.1 General . 299
10.2.2 PICS Tables . 299
10.3 SDSRC- SAFE DATA SOURCE . 302
10.3.1 Purpose . 302
10.3.2 Inspection of the SID Structure . 302
10.3.3 Inspection of the Vital Data Packet . 303
10.3.4 Exclusivity . 304
10.3.5 SDSRC performance . 305
10.4 SDSINK – SAFE DATA SINK . 305
10.4.1 General . 305
10.4.2 VDP sampling . 305
10.4.3 VDP Integrity Check . 305
10.4.4 Sink Time Supervision . 306
10.4.5 Guard Time Supervision . 306
10.4.6 Latency Monitoring . 306
10.4.7 Channel Monitoring. 307

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10.4.8 SDTv2 Application Interface . 307
10.4.9 Diagnostics and statistics . 308
11 Conformance test of ETB-equipped consist . 308
11.1 Scope . 308
11.2 Abstract consist tester architecture . 309
11.3 Consist test stages . 311
11.4 PICS Pro-forma . 311
11.4.1 General . 311
11.4.2 PICS Tables . 311
11.5 Related requirements . 314
11.6 Testing configurations . 314
11.6.1 General . 314
11.6.2 Testing configuration TC1 . 315
11.6.3 Testing configuration TC2 . 316
11.6.4 Testing configuration TC3 . 316
11.7 Consist tester operation . 317
11.7.1 General . 317
11.7.2 ECS addressing . 317
11.7.3 Test Stimuli . 317
11.7.4 Expected result verification . 320
11.7.5 Test execution timing considerations . 321
11.8 Basic test . 321
11.8.1 General . 321
11.8.2 Test sequence for TTDB computation (middle consist, same orientation) . 321
11.8.3 Test sequence for TTDB computation (middle consist, inverse
orientation) . 321
11.8.4 Test sequence for TTDB computation (end consist, no traction, same

orientation) . 322
11.8.5 Test sequence for TTDB computation (end consist, no traction, inverse
orientation) . 322
11.8.6 Test sequence for TTDB computation (end consist, traction, same
orientation) . 323
11.8.7 Test sequence for TTDB computation (end consist, traction, inverse

orientation) . 323
11.8.8 Test sequence for TTDB computation (train lengthening and shortening) . 324
11.9 Leading test .
...