IEC TR 62357-200:2015

Power systems management and associated information exchange - Part 200: Guidelines for migration from Internet Protocol version 4 (IPv4) to Internet Protocol version 6 (IPv6)

IEC TR 62357-200:2015(E) applies to information exchange in power systems including, but not restricted to, substations, control centre, maintenance centre, energy management systems, synchrophasor-based grid stability systems, bulk energy generation, distributed energy generation (renewables), energy storage, load management. It addresses the issues encountered when migrating from Internet Protocol version 4 (IPv4) to Internet Protocol version 6 (IPv6). It describes migration strategies, covering impact on applications, communication stack, network nodes, configuration, address allocation, cyber security and the related management. This Technical Report considers backward compatibility and show concepts as well as necessary migration paths to IPv6 from IPv4 where necessary, for a number of protocols in the IEC 61850 framework.

General Information

• Status: Published
• Publication Date: 22-Jul-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.035.20 - Plastics and rubber insulating materials
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 57 - Power systems management and associated information exchange
• Current Stage: PPUB - Publication issued
• Start Date: 31-Oct-2015
• Completion Date: 23-Jul-2015

Standards Content (Sample)

IEC TR 62357-200 ®
Edition 1.0 2015-07
TECHNICAL
REPORT
colour
inside
Power systems management and associated information exchange –
Part 200: Guidelines for migration from Internet Protocol version 4 (IPv4) to
Internet Protocol version 6 (IPv6)

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IEC TR 62357-200 ®
Edition 1.0 2015-07
TECHNICAL
REPORT
colour
inside
Power systems management and associated information exchange –

Part 200: Guidelines for migration from Internet Protocol version 4 (IPv4) to

Internet Protocol version 6 (IPv6)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-2795-4

– 2 – IEC TR 62357-200:2015 © IEC 2015
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviated terms, acronyms and conventions . 13
3.1 Terms and definitions . 13
3.2 Abbreviations . 14
3.3 Conventions . 16
3.4 Network diagram symbols . 16
4 Internet technologies . 17
4.1 Internet Protocol Version 4 (IPv4) . 17
4.1.1 Origin . 17
4.1.2 IPv4 packet transmission over Ethernet . 17
4.1.3 IPv4 header . 18
4.1.4 IPv4 addresses . 19
4.1.5 IPv4 fragmentation and packet size . 20
4.1.6 IPv4 auxiliary protocols . 20
4.1.7 IPv4 routing . 21
4.2 Internet Protocol Version 6 (IPv6) . 21
4.2.1 IPv6 motivation . 21
4.2.2 IPv6 packets on Ethernet . 21
4.2.3 IPv6 addresses . 22
4.2.4 IPv6 auxiliary protocols . 24
4.2.5 IPv6 fragmentation and packet size . 25
4.2.6 IPv6 routing . 25
4.3 Comparison IPv4 and IPv6 . 25
4.3.1 Main differences . 25
4.3.2 IPv4 and IPv6 address classes . 25
4.3.3 Address representation in IEC 61850 . 26
5 Transition from IPv4 to IPv6 . 27
5.1 IPv6 migration necessity . 27
5.2 Migration types . 27
5.3 IPv6 migration impact on power systems communications . 28
6 Migration methods . 29
6.1 Migration principles . 29
6.2 Address mapping . 29
6.2.1 Address mapping from IPv4 to IPv6 . 29
6.2.2 General application impact of IPv6 addresses . 30
6.2.3 Address migration in IEC 61850. 30
6.3 Dual-stack devices . 32
6.3.1 General . 32
6.3.2 Standard dual-stack . 34
6.3.3 IEC 61850 stack with IPv4 and IPv6 . 35
6.3.4 Migrating applications in dual-stack by Bump-in-the Host . 35
6.3.5 Dual-stack recommendations . 36
6.4 Tunneling . 37

6.4.1 Tunneling principle . 37
6.4.2 Standardized tunneling protocols . 37
6.4.3 Tunneling IPv4 over IPv6 . 38
6.4.4 Standardized IPv6 over IPv4 tunneling protocols . 41
6.4.5 Tunneling conclusion . 42
6.5 Translation . 42
6.5.1 Translation principle . 42
6.5.2 Translation from IPv4 to IPv6 . 43
6.5.3 Translation implementation . 44
6.5.4 Standardized translators . 45
6.5.5 Translator conclusion . 45
6.6 Migration plan . 45
6.6.1 Procedure . 45
6.6.2 Security considerations . 46
7 Utility protocols based on the Internet Protocol . 46
7.1 Utility protocols on Layer 3 . 46
7.2 Layer 3 communication in IEC 61850 . 47
7.2.1 Direct Layer 3 communication . 47
7.2.2 Layer 3 communication by Network Address Translator (NAT) . 47
7.2.3 Layer 3 communication by Application-Level Gateway (proxy) . 48
7.3 IEC 61850 Layer 3 communication for Layer 2 traffic . 49
7.4 Other utility protocols . 50
7.5 Virtual Private Network and overlays . 50
8 Scenarios for substation automation . 50
8.1 Scenario overview. 50
8.2 Scenario 1: Substation-external communication over IPv6 only . 51
8.2.1 Scenario 1: Description . 51
8.2.2 Scenario 1.1: Substation to substation Layer 2 tunneling IPv4 over IPv6 . 51
8.2.3 Scenario 1.2: substation to control centre: tunneling IPv4 over IPv6 . 52
8.2.4 Scenario 1: Evaluation . 52
8.3 Scenario 2: Access from IPv6 devices through ALGs and translators . 53
8.3.1 Scenario 2.1: substation to engineering over dual-stack engineering . 53
8.3.2 Scenario 2.2 substation to control centre by ALG. 53
8.3.3 Scenario 2.3: substation to SCADA / engineering by translator/proxy . 54
8.3.4 Scenario 2: Evaluation . 55
8.4 Scenario 3: Substation partially or totally IPv6 . 55
8.4.1 Scenario 3: Description . 55
8.4.2 Scenario 3.1: substation with dual-stack devices . 55
8.4.3 Scenario 3: Evaluation . 56
8.5 Scenario 4: Intermediate devices as ALGs . 56
8.5.1 Phasor Data Concentrators (PDC) as ALGs . 56
8.5.2 XMPP servers as ALGs . 57
8.5.3 Scenario 4 evaluation . 58
8.6 Scenario 5: Integration of IPv6-only devices in a legacy IPv4 network . 58
8.6.1 IPv6-only devices communicating over an IPv4 network . 58
8.6.2 IPv6-only devices accessed from an IPv4 SCADA . 59
8.6.3 Scenario 5 evaluation . 60
9 Use Case: Generation plant- IPv4 to IPv6 migration . 60
9.1 General description . 60

– 4 – IEC TR 62357-200:2015 © IEC 2015
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