1、A Joint Publication of:American Association of State Highway and Transportation Officials (AASHTO) Institute of Transportation Engineers (ITE)National Electrical Manufacturers Association (NEMA)NTCIP Standards PublicationNTCIP 2302:2001 v01.06National TransportationCommunications for ITS ProtocolTri
2、vial File Transfer Protocol Application ProfileA Joint Standard of AASHTO, ITE, and NEMAA Joint Standard of AASHTO, ITE, and NEMANTCIP 2302:2001 v01.06National Transportation Communications for ITS Protocol Trivial File Transfer Protocol Application Profile December 2001 Published byAmerican Associa
3、tion of State Highway and Transportation Officials (AASHTO) 444 North Capitol Street, N.W., Suite 249 Washington, D.C. 20001 Institute of Transportation Engineers (ITE)1099 14th Street, N.W., Suite 300 West Washington, D.C. 20005-3438 National Electrical Manufacturers Association (NEMA)1300 North 17
4、th Street, Suite 1847 Rosslyn, Virginia 22209-3801 2001 AASHTO / ITE / NEMA. All rights reserved. 2001 by the American Association of State Highway and Transportation Officials (AASHTO), the Institute of Transportation Engineers (ITE), and the National Electrical Manufacturers Association (NEMA). Al
5、l intellectual property rights, including, but not limited to, the rights of reproduction in whole or in part in any form, translation into other languages and display are reserved by the copyright owners under the laws of the United States of America, the Universal Copyright Convention, the Berne C
6、onvention, and the International and Pan American Copyright Conventions. Except for the MIB or the PRL, do not copy without written permissionof either AASHTO, ITE, or NEMA. NTCIP 2302:2001 v01.06 Page i 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission ACKNOWLEDGEMENTS This publicatio
7、n was prepared by the NTCIP Profiles Working Group, which is a subdivision of the Joint Committee on the NTCIP. The Joint Committee is organized under a Memorandum of Understanding among the American Association of State Highway and Transportation Officials (AASHTO), the Institute of Transportation
8、Engineers (ITE), and the National Electrical Manufacturers Association (NEMA). The Joint Committee on the NTCIP consists of six representatives from each of the standards organizations, and provides guidance for NTCIP development. At the time that this document was prepared, the following individual
9、s were active members of the NTCIP Profiles Working Group: Robert De Roche (Chair) Robert Force W. L. (Bud) Kent Gary Meredith Alexis Mousadi Brian Paulsmeyer Mike Robinson Nu Rosenbohm Kenneth Vaughn Hoi Wong Other individuals providing input to the document include: Joey Baumgartner Al Bonificio P
10、hil Cabooter Kenneth Earnest Michael Forbis Joseph Herr D. Howard Dave Kingery Doug Lowe Don Ninke Jeff Racz Ray Starr Tom Wolfe In addition to the many volunteer efforts, recognition is also given to those organizations who supported the efforts of the working groups by providing comments and fundi
11、ng for the standard, including: ARINC, Inc. Caltrans Eagle Traffic Control Systems Econolite Control Products, Inc Minnesota Department of Transportation Ministry of Transportation, Ontario Naztec, Inc New York State DOT Odetics ITS, Inc. PB Farradyne, Inc. Peek Traffic Systems, Inc. Southwest Resea
12、rch Institute Texas DOT NTCIP 2302:2001 v01.06 Page ii Do Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA Vanasse, Hagen May 2000 ITE Software Standard; May 2001 NEMA Standard; January 2001 History From 1998 to 1999, this document was referenced as TS 3.TFTP. However, to provide an orga
13、nized numbering scheme for the NTCIP documents, this document is now referenced as NTCIP 2302. The technical specifications of NTCIP 2302 are identical to the former reference, except as noted in the development history below: TS 3.TFTP v98.01.04. March 1998 Accepted as a User Comment Draft by the J
14、oint Committee on the NTCIP. July 1998 NTCIP Standards Bulletin B0014 referred document for comment. NTCIP 2302 v99.01.05. July 1999 Accepted v99.01.04 as a Recommended Standard by the Joint Committee on the NTCIP. January 2000 NTCIP Standards Bulletin B0045 referred v99.01.05 with typographic corre
15、ctions for approval. Approved by AASHTO in May 2000, approved by ITE in May 2001, and approved by NEMA in January 2001. NTCIP 2302:2001 v01.06. December 2001 Reformatted for printing: incremented version number and updated date; modified and reorganized front matter to conform to NTCIP 8002; and NTC
16、IP 2302:2001 v01.06 Page iv Do Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA updated headers, footers, and page numbers. All references to TS 3 Standard designations were changed to equivalent NTCIP Standard designations. NTCIP 2302:2001 v01.06 Page v 2001 AASHTO / ITE / NEMA Do Not C
17、opy Without Written Permission INTRODUCTION The context of the NTCIP is one part of the Intelligent Transportation Systems standardization activities covering base standards, profiles, and registration mechanisms. Base Standards define procedures and rules for providing the fundamental operations as
18、sociated with communications and information that is exchanged over fixed-point communications links. Profiles define subsets or combinations of base standards used to provide specific functions or services. Profiles prescribe particular subsets or options available in base standards necessary for a
19、ccomplishing a particular function or service. This provides a basis for the development of uniform, nationally recognized conformance. Registration Mechanisms provide a means to specify and uniquely identify detailed parameters within the framework of base standards and/or profiles. The Profiles Wo
20、rking Group is concerned with the methodology of defining profiles, and their documentation in Standards Publications. This standard defines an application profile for block or file transfers to and from roadside devices. The objective is to facilitate the specification of ITS systems characterized
21、by a high degree of interoperability and interchangeability of its components. In 1992, the NEMA 3-TS Transportation Management Systems and Associated Control Devices Section began the effort to develop the NTCIP. Under the guidance of the Federal Highway Administrations NTCIP Steering Group, the NE
22、MA effort was expanded to include the development of communications standards for all transportation field devices that could be used in an ITS network. In September 1996, an agreement was executed among AASHTO, ITE, and NEMA to jointly develop, approve, and maintain the NTCIP standards. In August 1
23、997, the Joint Committee on the NTCIP formed a new working group to develop a method for organizing class profiles. The Profiles WG first met in September 1997. After research into how national and international standards organizations combine protocols and standards to address all seven layer of th
24、e ISO-OSI Reference Model, the committee adopted the approach defined in the NTCIP Profile Framework. Following that approach, a protocol stack is specified by application, transport, subnetwork profiles. An application profile addresses the application, presentation, and session layers. A transport
25、 profile addresses the transport and network layers. A subnetwork profile addresses the data link and physical layers. The NTCIP Trivial File Transfer Protocol Application Profile (AP-TFTP) is an application profile for use in center-to-roadside and center-to-center communications. NTCIP 2302:2001 v
26、01.06 Page vi Do Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA If you are not willing to abide by the following notices, return these materials immediately. Joint AASHTO, ITE, and NEMA NTCIP Profile Requirements List REPRODUCTION NOTICE AASHTO / ITE / NEMA extend permission to the pur
27、chaser of this standards publication to make and/or distribute unlimited copies (including derivative works, which will then be known as PICS) of the excerpt identified as the Profile Requirements List, including copies for commercial distribution, provided that each copy made or distributed contain
28、s the notice “Based on an NTCIP Profile Requirements List. Used by permission of AASHTO / ITE / NEMA.” DisclaimerThe information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Cons
29、ensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. AASHTO, ITE, and NEMA standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards dev
30、elopment process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While AASHTO, ITE, and NEMA administer the process and establish rules to promote fairness in the development of consensus, they do not write
31、 the document and they do not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in their standards and guideline publications. AASHTO, ITE, and NEMA disclaim liability for any personal injury, property, or other damage
32、s of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. AASHTO, ITE, and NEMA disclaim and make no guaranty or warranty, express or implied, as to the accuracy or
33、completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. AASHTO, ITE, and NEMA do not undertake to guarantee the performance of any individual manufacturer or sellers products or
34、 services by virtue of this standard or guide. In publishing and making this document available, AASHTO, ITE, and NEMA are not undertaking to render professional or other services for or on behalf of any person or entity, nor are AASHTO, ITE, and NEMA undertaking to perform any duty owed by any pers
35、on or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered
36、by this publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication. AASHTO, ITE, and NEMA have no power, nor do they undertake to police or enforce compliance with the contents of this document. AASHTO, ITE,
37、 and NEMA do not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to AASHTO, ITE, or NEMA and is solely the responsib
38、ility of the certifier or maker of the statement. NTCIP is a trademark of AASHTO / ITE / NEMA. NTCIP 2302:2001 v01.06 Page vii 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission CONTENTS Section 1 GENERAL.1-11.1 Scope1-11.2 Profile-Protocol-Layer Relationships.1-11.3 References1-11.3.1
39、Normative References .1-21.3.2 Other References.1-21.4 Definitions .1-21.5 Abbreviations and Acronyms 1-4Section 2 CONFORMANCE2-12.1 General Requirements2-12.2 Protocol Features2-12.3 Transmission Modes.2-12.4 Packet Types 2-12.5 Error Codes.2-12.6 Interfaces 2-1Annex A TFTP APPLICATION PROFILE REQU
40、IREMENTS LIST A-1A.1 Introduction A-1A.1.1 Notation. A-1A.2 Standards Referenced . A-3A.3 PICS Requirements List. A-3A.3.1 General Information A-3A.4 Basic Requirements. A-4A.4.1 Protocol Features A-4A.4.2 Transmission Modes. A-5A.4.3 Packet Types A-5A.4.4 Error Codes. A-5A.4.5 Interfaces A-6NTCIP 2
41、302:2001 v01.06 Page viii Do Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA NTCIP 2302:2001 v01.06 Page 1-1 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission Section 1 GENERAL 1.1 SCOPE This standard is applicable to traffic control and transportation related devices that
42、 must operate in an Intelligent Transportation System. As an NTCIP application profile, it specifies a set of protocols and standards applicable to the application, presentation, and session layers of the ISO - OSI Reference Model. This standard is intended to provide a simple block or file transfer
43、 service between roadside devices and management stations over a connectionless transport service. 1.2 PROFILE-PROTOCOL-LAYER RELATIONSHIPS This application profile specifies the provisions for the Trivial File Transfer Protocol. This profile provides connectionless file transfer services. The layer
44、s, base standards, and profile taxonomy that make up this profile are shown in Figure 1-1. ISO Layers Base Standard Profile APPLICATION LAYER IAB STD 33 (TFTP) IAB STD 3 (Internet Hosts) TFTP Application Profile PRESENTATION LAYER SESSION LAYER Figure 1-1 TFTP - Application Profile Relationship 1.3
45、REFERENCES For approved revisions, contact: NTCIP Coordinator National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847 Rosslyn, VA 22209-3801 fax: (703) 841-3331 e-mail: ntcipnema.org For draft revisions of this document, which are under discussion by the relevant NTCIP Worki
46、ng Group, and recommended revisions of the NTCIP Joint Committee, visit the World Wide Web at http:/www.ntcip.org. The following standards (normative references) contain provisions, which through reference in this text, constitute provisions of this Standard. Other documents and standards (other ref
47、erences) are referenced in these documents, which might provide a complete understanding of the structure and use of profiles. At the time of publication, the editions indicated were valid. All standards are subject to revision, and NTCIP 2302:2001 v01.06 Page 1-2 Do Not Copy Without Written Permiss
48、ion 2001 AASHTO / ITE / NEMA parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. 1.3.1 Normative References Internet Activities Board available via electronic file transfer use anonymous FTP fr
49、om nic.ddn.mil or IAB STD 3 (RFC 1122: 1989, Requirements For Internet Hosts - Communication Layers, RFC 1123: 1989, Requirements For Internet Hosts - Application and Support) IAB STD 33 (RFC 1350:1992, The TFTP Protocol (Revision 2)1.3.2 Other References Guide to Open System Specifications, European Workshop for Open Systems, http:/www.ewos.be/goss/top.htm, June 9, 1997 US-DOD Internet Related Standardized Profiles, DISA Internet Librarian, http:/www-library.itsi.disa.mil/org/mil_std.html, October 31, 1997 American Association of
