1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 21210:2012Intelligent transport systems Communications access for land mobiles (CALM) IPv6 NetworkingBS ISO 21210:2012 BRITISH STANDARDNational forewordThis British Standa
2、rd is the UK implementation of ISO 21210:2012. The UK participation in its preparation was entrusted to T e c h n i c a l Committee EPL/278, Road transport informatics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport
3、to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 56086 6 ICS 03.220.01; 35.240.60 Compliance with a British Standard cannot confer immunityfrom lega
4、l obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 21210:2012Reference numberISO 21210:2012(E)ISO 2012INTERNATIONAL STANDARD ISO21210First editio
5、n2012-06-15Intelligent transport systems Communications access for land mobiles (CALM) IPv6 Networking Systmes intelligents de transport Accs aux communications des services mobiles terrestres (CALM) Gestion de rseau IPv6 BS ISO 21210:2012ISO 21210:2012(E) COPYRIGHT PROTECTED DOCUMENT ISO 2012 All r
6、ights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of
7、the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2012 All rights reservedBS ISO 21210:2012ISO 21210:2012(E) ISO 2012 All rights reserved iiiContents Page Foreword
8、 iv Introduction . v 1 Scope 1 2 Conformance . 1 3 Normative references 1 4 Terms and definitions . 2 5 Symbols and abbreviated terms 6 6 Requirements . 7 Annex A (informative) Illustration of mobility support 19 Bibliography 22 BS ISO 21210:2012ISO 21210:2012(E) iv ISO 2012 All rights reservedForew
9、ord ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a techni
10、cal committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of e
11、lectrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to
12、the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for i
13、dentifying any or all such patent rights. ISO 21210 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems. BS ISO 21210:2012ISO 21210:2012(E) ISO 2012 All rights reserved vIntroduction This International Standard is part of a family of International Standards based on the com
14、munications access for land mobiles (CALM) concept. These International Standards specify a common architecture network protocols and communication interface definitions for wired and wireless communications using various access technologies including cellular 2nd generation, cellular 3rd generation
15、, satellite, infra-red, 5 GHz microwave, 60 GHz millimetre-wave and mobile wireless broadband. These and other access technologies that can be incorporated are designed to provide broadcast, unicast and multicast communications between mobile stations, between mobile and fixed stations and between f
16、ixed stations in the intelligent transport systems (ITS) sector. A fundamental advantage of the CALM concept over traditional systems is that applications are abstracted from the access technologies that provide the wireless connectivity and the networks that transport the information from the sourc
17、e to the destination(s). This means that ITS stations are not limited to a single access technology and networking protocol and can implement any of those supported, and the ITS station management can make optimal use of all these resources. To exploit this flexibility, CALM-compliant systems can su
18、pport handover of different types including those involving a change of communication interface without a change of access technology; those involving a change of communication interface with a change of access technology; those involving reconfiguration or change of the network employed to provide
19、connectivity; those involving both a change in communication interface and network reconfiguration. An introduction to the whole set of International Standards is provided in ISO 21217. One of the most interesting features of the CALM concept is the ability to use a number of networking protocols de
20、signed to meet specific requirements. However, to meet the needs of the majority of anticipated ITS applications and services, IPv6 (Internet Protocol version 6) is ideally suited. The use of this version of IP scales is to meet the needs of a growing number of vehicles and connected devices, and pr
21、ovides the added functionality necessary in mobile environments IPv6 mobility support (NEMO), “multiple Care-of Address” (MCoA) support. This International Standard specifies the IPv6 network protocols and services necessary to support global reachability of ITS stations, continuous Internet connect
22、ivity for ITS stations and the handover functionality required to maintain such connectivity. This functionality also allows legacy devices to effectively use an ITS station as an access router to connect to the Internet. Essentially, this specification describes how IPv6 is configured to support IT
23、S stations and provides the necessary management functionality. BS ISO 21210:2012BS ISO 21210:2012INTERNATIONAL STANDARD ISO 21210:2012(E) ISO 2012 All rights reserved 1Intelligent transport systems Communications access for land mobiles (CALM) IPv6 Networking 1 Scope This International Standard spe
24、cifies networking protocol functionalities related to IPv6 networking between two or more ITS stations communicating over the global Internet communication network. The International Standard assumes that the reader is familiar with IETF specifications found in “Request for Comments“ (RFCs) of indiv
25、idual IPv6 protocol blocks used within this International Standard. This International Standard does not define a new protocol, a new exchange of messages at the IPv6 layer, or new data structures. It defines how standard IETF protocols are combined so that ITS stations can communicate with one anot
26、her using the IPv6 family of protocols. Procedures defined to share information between the IPv6 layer and other components of the ITS station architecture are defined in ISO 24102. In addition to the requirements specified within this International Standard, a number of notes and examples are provi
27、ded to illustrate IPv6 addressing configuration and IPv6 mobility management. 2 Conformance This International Standard specifies the use of IPv6 networking for ITS stations conforming to the CALM architecture (ISO 21217). A set of protocols specified by the IETF are selected. At minimum, all implem
28、entations of IPv6 in the context of ITS stations have to conform with IETF RFC 4294 IPv6 Node Requirements. “Protocol implementation conformance statements“ (PICS) will be provided at a later stage in a later document and will complement the IPv6 conformance tests such as those defined for the IPv6-
29、ready logo program (http:/www.ipv6ready.org). The IPv6-ready logo program provides conformance tests for individual IPv6 protocols or sets of IPv6 protocols on an individual protocol basis. 3 Normative references The following referenced documents are indispensable for the application of this docume
30、nt. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 21217:2010, Intelligent transport systems Communications access for land mobiles (CALM) Architecture ISO 21218, Intelligent transpor
31、t systems Communications access for land mobiles (CALM) Medium service access points ISO 24102, Intelligent transport systems Communications access for land mobiles (CALM) Management IETF Request for Comments (RFC) 2460, Internet Protocol, Version 6 (IPv6) Specification IETF Request for Comments (RF
32、C) 3587, IPv6 Global Unicast Address Format IETF Request for Comments (RFC) 3963, Network Mobility (NEMO) Basic Support Protocol BS ISO 21210:2012ISO 21210:2012(E) 2 ISO 2012 All rights reservedIETF Request for Comments (RFC) 4291, IP Version 6 Addressing Architecture IETF Request for Comments (RFC)
33、 4294, IPv6 Node Requirements IETF Request for Comments (RFC) 4493, The AES-CMAC Aligorithm IETF Request for Comments (RFC) 4861, Neighbor Discovery for IP Version 6 (IPv6) IETF Request for Comments (RFC) 4862, IPv6 Stateless Address Autoconfiguration IETF Request for Comments (RFC) 5648, Multiple C
34、are-of Addresses Registration 4 Terms and definitions For the purposes of this document, the terms and definitions in ISO 21217, ISO 21218 and ISO 24102 and the following apply. NOTE Wherever terms like “address“, “host“, “node“, “router“, “mobile network“, “interface“, “link“ and “subnet“, are used
35、 in the text without the IPv6 modifier, the IPv6 modifier should be assumed to be present (e.g. IPv6 address, IPv6 interface). Most of the definitions are taken from RFC 2460; RFC 3753 and RFC 4885. 4.1 care-of address CoA IPv6 address associated with a mobile node while attached on a foreign IPv6 l
36、ink 4.2 egress IPv6 interface interface of an MR attached to the home IPv6 link if the IPv6 mobile router is at home, or attached to a foreign IPv6 link if the IPv6 mobile router is in a foreign network SOURCE: RFC 3753 4.3 external IPv6 interface IPv6 interface of an ITS-S IPv6 router in an ITS sta
37、tion used to connect to another ITS station or the Internet 4.4 foreign IPv6 link IPv6 link other than the mobile nodes home IPv6 link 4.5 global IPv6 address IPv6 address corresponding to Global Unicast Addresses as specified in RFC 4291 4.6 home address HoA IPv6 address assigned to a mobile node,
38、used as the permanent address of the mobile node NOTE The term home address is defined in RFC 3753. This IPv6 address is within the mobile nodes home IPv6 link. Standard IP routing mechanisms deliver packets destined for a mobile nodes home address to its home IPv6 link. 4.7 home IPv6 link IPv6 link
39、 on which a mobile nodes home IPv6 prefix is defined BS ISO 21210:2012ISO 21210:2012(E) ISO 2012 All rights reserved 34.8 home IPv6 prefix IPv6 prefix corresponding to a mobile nodes home address 4.9 ingress IPv6 interface interface of an MR attached to an IPv6 link inside the IPv6 mobile network SO
40、URCE: RFC 3753 4.10 home ITS-S IPv6 LAN ITS-S IPv6 LAN providing Internet reachability functions to mobile ITS-S IPv6 LANs 4.11 IPv6 subnet logical group of connected network nodes NOTE Nodes in an IPv6 subnet share a common network prefix. SOURCE: RFC 3753 4.12 IPv6 Access Network AN IP network tha
41、t includes one or more Access Network Routers SOURCE: RFC 3753 4.13 IPv6 access router AR Access Network Router residing on the edge of an Access Network and connected to one or more Access Points NOTE This definition of “access router“ is taken from RFC 3753. An IPv6 Access Router offers IP connect
42、ivity to Mobile Nodes, acting as a default IPv6 router to the mobile nodes it is currently serving. The IPv6 Access Router may include intelligence beyond a simple forwarding service offered by ordinary IPv6 routers. 4.14 IPv6 address IPv6-layer identifier for an interface or a set of interfaces NOT
43、E IPv6 addresses are assigned to network interfaces, not to nodes. SOURCE: RFC 2460 4.15 IPv6 home agent HA IPv6 router on a mobile nodes home IPv6 link with which the mobile node (MN) has registered its current Care-of Address. NOTE This definition of home agent is taken from RFC 3753. While the mo
44、bile node is away from home, the home agent intercepts packets on the home IPv6 link destined to the mobile nodes Home Address (HoA), encapsulates them, and tunnels them to the mobile nodes registered Care-of Address (CoA). 4.16 IPv6 host any IPv6 node that is not a IPv6 router SOURCE: RFC 2460 BS I
45、SO 21210:2012ISO 21210:2012(E) 4 ISO 2012 All rights reserved4.17 IPv6 interface nodes attachment to an IPv6 link NOTE Each interface is configured with at least one link-local address and possibly other types of IPv6 addresses (global unicast, multicast). SOURCE: RFC 2460 4.18 IPv6 link communicati
46、on facility or medium over which nodes can communicate at the link layer, i.e. the layer immediately below IPv6 NOTE A link is the layer immediately below IP. In a layered network stack model, the Link Layer (Layer 2) is normally below the Network (IP) Layer (Layer 3), and above the Physical Layer.
47、Examples are Ethernet (simple or bridged; PPP links; X.25, Frame Relay, or ATM networks; and IP (or higher) layer tunnels, such as tunnels over IPv4 or IPv6 itself. SOURCE: RFC 2460 4.19 IPv6 mobile network entire network, moving as a unit, which dynamically changes its point of attachment to the In
48、ternet and thus its reachability in the topology NOTE This definition of mobile network is taken from RFC 3753. 4.20 IPv6 mobile router MR IPv6 router capable of changing its point of attachment to the network, moving from one IPv6 link to another IPv6 link NOTE The mobile IPv6 router is capable of
49、forwarding packets between two or more interfaces, and possibly running a dynamic routing protocol modifying the state by which it does packet forwarding. A mobile IPv6 router acting as a gateway between an entire IPv6 mobile network and the rest of the Internet has one or more egress interface(s) and one or more ingress interface(s). Packets forwarded upstream to the rest of the Internet are transmitt
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