ETSI TR 123 975-2016 Digital cellular telecommunications system (Phase 2+) Universal Mobile Telecommunications System (UMTS) LTE IPv6 migration guidelines (V13 0 0 3GPP TR 23 975 v.pdf

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1、 ETSI TR 1Digital cellular telecoUniversal Mobile TelIPv6 m(3GPP TR 23.9TECHNICAL REPORT 123 975 V13.0.0 (2016communications system (Phaelecommunications System (LTE; migration guidelines .975 version 13.0.0 Release 1316-01) hase 2+); (UMTS); 13) ETSI ETSI TR 123 975 V13.0.0 (2016-01)13GPP TR 23.975

2、 version 13.0.0 Release 13Reference RTR/TSGS-0223975vd00 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse

3、(06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified withou

4、t the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the

5、 present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to on

6、e of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The conten

7、t of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Mar

8、ks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 123 975 V13.0.0 (2016-01)23GP

9、P TR 23.975 version 13.0.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ET

10、SI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no

11、 investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical

12、Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverable

13、s. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted

14、 as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 123 975 V13.0.0 (2016-01)33GPP TR 23.975 version 13.0.0 Release 13Contents Intellectual

15、 Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions, symbols and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 8g34 Baseline Architecture for IPv4 and IPv6 Co-existence 8g35 IPv6 migration scenarios 10g35.1 S

16、cenario 1: Dual-stack connectivity with Limited Public IPv4 Address Pools 10g35.2 Scenario 2: Dual Stack connectivity with Limited Private IPv4 Address Pools 10g35.3 Scenario 3: UEs with IPv6-only connection and applications using IPv6 10g35.4 Scenario 4: IPv4 applications running on a Dual-stack ho

17、st with an assigned IPv6 prefix and a shared IPv4 address and having to access IPv4 services . 11g36 High level requirements . 11g37 Solutions and functional flows description 11g37.1 Solution 1 Dual-stack deployment combined with NAPT44 11g37.1.1 Overview 11g37.1.2 Description 11g37.1.3 Functional

18、Description 13g37.1.4 Information flows . 14g37.1.5 Evaluation . 14g37.1.6 Applicability . 15g37.2 Transition Solution: Gateway-Initiated Dual-Stack Lite 15g37.2.1 GI-DS-lite Overview. 15g37.2.2 GI-DS-lite Evaluation . 17g37.2.3 GI-DS-lite Applicability . 19g37.3 Solution 3 - MS/UE IPv6-only deploym

19、ent with stateful NAT64 support. 19g37.3.1 Overview 19g37.3.2 Description 19g37.3.3 Functional Description 19g37.3.4 Server Flow Example 20g37.3.5 Evaluation . 21g37.3.6 Applicability . 22g38 Evaluation . 22g39 Summary 22g310 Recommendations 22g3Annex A: Reference Scenarios for NAT in the EPC . 23g3

20、A.1 UE and AF In the same Address Realm . 23g3A.2 NAT between UE and AF 24g3A.2.1 Overlapping IPv4 address realms . 25g3Annex B: Overview of Solutions for IPv6 Transition . 28g3ETSI ETSI TR 123 975 V13.0.0 (2016-01)43GPP TR 23.975 version 13.0.0 Release 13B.1 Solution 1 - Dual-Stack Lite Architectur

21、e 28g3B.1.1 Solution 1 Description 28g3B.1.1.1 Plain IPv6 encapsulation in 3GPP architecture . 28g3B.1.1.2 GRE encapsulation . 29g3B.1.1.3 GTP encapsulation 29g3B.1.1.4 DSMIP6 29g3B.2 Solution 2 - A+P architecture . 30g3B.2.4 Port Range Router (PRR) function . 30g3B.2.4.1 General 30g3B.2.4.2 PRR in

22、binding mode 30g3B.2.4.3 PRR in stateless mode 31g3B.2.6 Requirement on UEs 31g3B.2.7 Updating legacy UEs 32g3B.2.8 Co-existence with other transition techniques 32g3B.2.9 Applicability . 32g3B.2.10 Evaluation. 32g3B.3 Solution 3 - Protocol translation . 33g3B.4 Solution 4 - Per-interface NAT44 34g3

23、B.4.1 Overview 34g3B.4.2 Evaluation. 34g3B.4.3 Applicability . 35g3B.5 Void 35g3B.6 Void 35g3B.7 Solution 7 - BIH/NAT64 35g3B.7.1 Overview 35g3B.7.2 Solution Description . 36g3B.7.3 Service Flow Example 36g3B.7.4 Evaluation. 37g3B.7.5 Applicability . 37g3Annex C: Building Block: Dual-Stack EPS Beare

24、r Contexts in EPS/GPRS 39g3C.1 Description . 39g3C.2 Functional Description . 39g3C.3 Information flows . 40g3C.4 Applicability . 40g3Annex D: Change history 41g3History 42g3ETSI ETSI TR 123 975 V13.0.0 (2016-01)53GPP TR 23.975 version 13.0.0 Release 13Foreword This Technical Report has been produce

25、d by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying chang

26、e of Release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substan

27、ce, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction With the depletion of IPv4 addresses and the development of data service, demands for deploying IPv6 are higher than before. T

28、his document analyzes different IPv6 migration scenarios and applicable mechanisms as well as identifies impacts on 3GPP network elements. ETSI ETSI TR 123 975 V13.0.0 (2016-01)63GPP TR 23.975 version 13.0.0 Release 131 Scope The technical report identifies various scenarios of transition to IPv6 an

29、d co-existence of IPv4 and IPv6, deployment options and impacts on 3GPP network elements. In particular: - Identify the transition and co-existence scenarios of interest for operators and the respective assumptions and requirements. - Analyze existing IP address allocation mechanism for IPv6 migrati

30、on if necessary. - Investigate IPv6 transition mechanisms for the scenarios identified during the study and investigate their applicability for 3GPP network, and identify the compatibility among applicable transition mechanisms. - Identify any impact on 3GPP network elements. - Provide recommendatio

31、ns on IPv6 transition and co-existence of IPv4 and IPv6 and identify if any normative work is needed. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of

32、publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly

33、 refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 http:/tools.ietf.org/html/draft-ietf-softwire-dual-stack-lite-01 3 http:/tools.ietf.org/html/draft-ymbk-aplusp-04 4 http:/tools.ietf.org/html/draft-bo

34、ucadair-port-range-02 5 http:/tools.ietf.org/html/draft-bajko-pripaddrassign-01 6 http:/tools.ietf.org/html/draft-ietf-behave-v6v4-framework-00 7 http:/www.ietf.org/id/draft-ietf-behave-v4v6-bih-00.txt 8 http:/tools.ietf.org/html/draft-ietf-behave-v6v4-xlate-00 9 3GPP TS 23.401: “General Packet Radi

35、o Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access“. 10 3GPP TS 23.402: “Architecture enhancements for non-3GPP accesses“. 11 3GPP TS 23.060: “General Packet Radio Service (GPRS) Service description; Stage 2“. 12 Durand, A., Droms, R., Haberman, B.,

36、 Woodyatt, J., Lee, Y., and R. Bush, “Dual-stack Lite broadband deployments post IPv4 exhaustion“, IETF draft, draft-ietf-softwire-dual-stack-lite-07 (work in progress). 13 Brockners, F., Gundavelli, S., Speicher, S., Ward, D. “Gateway Initiated Dual-Stack Lite Deployment“, draft-ietf-softwire-gatew

37、ay-init-ds-lite-03 (work in progress). ETSI ETSI TR 123 975 V13.0.0 (2016-01)73GPP TR 23.975 version 13.0.0 Release 1314 3GPP TR 23.981 “Interworking aspects and migration scenarios for IPv4 based IMS implementations“. 15 http:/www.ietf.org/internet-drafts/draft-huang-behave-rfc2767bis-00.txt 16 htt

38、p:/www.ietf.org/internet-drafts/draft-huang-behave-rfc3338bis-00.txt 17 IETF Internet-Draft, draft-ietf-behave-v6v4-xlate-stateful-12: “ NAT64: Network Address and Protocol Translation from IPv6 Clients to IPv4 Servers“ work in progress. 18 IETF Internet-Draft, draft-ietf-behave-dns64-05: “DNS64: DN

39、S extensions for Network Address Translation from IPv6 Clients to IPv4 Servers “work in progress. 19 IETF Internet-Draft, draft-arkko-dual-stack-extra-lite-05: “Scalable Operations of Address Translators with Per-Interface Bindings“, work in progress. 20 IETF RFC 4364: “BGP/MPLS IP Virtual Private N

40、etworks (VPNs)“. 21 3GPP TS 23.203: Policy and charging control architecture. 22 IETF Internet-Draft, draft-boucadair-behave-ipv6-portrange: “Flexible IPv6 Migration Scenarios in the Context of IPv4 Address Shortage“ work in progress. 23 IETF Internet-Draft, draft-boucadair-behave-bittorrent-portran

41、ge-02: “Behaviour of BitTorrent service in an IP Shared Address Environment“ work in progress. 24 Haverinen, H., Siren, J., and P. Eronen, Energy Consumption of Always-On Applications in WCDMA Networks, VTC07-Spring, Dublin Ireland, 20-25 April 2007. NOTE: The Italicised references are individual IE

42、TF drafts which have not yet been endorsed by IETF working groups. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over t

43、he definition of the same term, if any, in TR 21.905 1. NAT: A function which provides NAT44, NAPT44, NAT64, NAPT64 or combinations of these. Attachment circuit: as used by RFC 4364 20, term to refer generally to means of attaching to a router, such as: PPP connections, ATM Virtual Circuits (VCs), F

44、rame Relay VCs, Ethernet interfaces, Virtual Local Area Networks (VLANs) on Ethernet interfaces, GRE tunnels, Layer 2 Tunnelling Protocol (L2TP) tunnels, IPSec tunnels, etc. An attachment circuit identifies uniquely the MPLS VPN used by all traffic using that circuit. CE: as used by RFC 4364 20, sta

45、nds for Customer Edge router or Customer Edge device. It represents an IP device using a BGP/MPLS IP Virtual Private Networks (VPN) to communicate with other CE devices using the same VPN, without the need to be routing peers of each other and without visibility of MPLS or the MPLS backbone providin

46、g connectivity between CEs in different sites. CEs are connected to PEs using attachment circuits. If CEs use dynamic routing protocols (CE routers) to route traffic in the VPN, then they are routing peers of the directly attached PEs. PE: as used by RFC 4364 20, stands for Provider Edge router. PEs

47、 use MPLS to tunnel traffic among each other enabling IP traffic between the CEs attached to them. ETSI ETSI TR 123 975 V13.0.0 (2016-01)83GPP TR 23.975 version 13.0.0 Release 133.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 1 and the following apply

48、. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 1. NAPT44 Network Address and Port Translation IPv4 to IPv4 NAT44 Network Address Translation IPv4 to IPv4 NAPT64 Network Address and Port Translation IPv6 to IPv4 NA

49、T64 Network Address Translation IPv6 to IPv4 PCC Policy and Charging Control 4 Baseline Architecture for IPv4 and IPv6 Co-existence This clause describes how dual-stack connectivity has been specified for the EPS and GPRS networks. The Release 8 3GPP EPS architecture supports and optimises the co-existence of IPv4 and IPv6 with dual-stack operation. Dual-stack operation means that native IPv4 and native IPv6 packets are transported in parallel by tunnelling them from the UE to the PDN GW within a si