ITU-T X 404-1999 Information Technology - Message Handling Systems (MHS) MHS Routing - Guide for Messaging Systems Managers Series X Data Neworks and Open System Communications Mes.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.404 (06/99) SERIES X: DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS Message Handling Systems Information technology - Message Handling Systems (MHS): MHS Routing - Guide for messaging system managers ITU-T R

2、ecommendation X.404 (Previously CCITT Recommendation) - STD-ITU-T RECMN X-404-ENGL 1399 48b259L Ob74b05 380 ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maint

3、enance Administrative arrangements Model and notation Service definitions Connection-mode protocol specifications Connectionless-mode protocol specifications PICS profomas Protocol Identification security Protocols Layer Managed Objects Conformance testing General Satellite data transmission systems

4、 OPEN SYSTEMS INTERCONNECTION INTERWORKING BETWEEN “WORKS DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registration Abstract Syntax Notation One (ASN.1) Systems Management framework and architecture Management Communication Service and P

5、rotocol Structure of Management Information Management functions and ODMA functions OS1 MANAGEMENT SECURITY OS1 APPLICATIONS Commitment, Concurrency and Recovery Transaction processing Remote operations OPEN DISTRIBUTED PROCESSING X.1-X.19 X.20-X.49 X.50-X.89 X.90-X. 149 X. 150-X. 179 X.180-X.199 x.

6、200-x.209 X.210-X.219 X.220-X.229 X.230-X.239 X.240-X.259 X.260-X.269 X.270-X.279 X.280-X.289 X.290-X.299 x.300-x.349 x.350-x.399 .499 x.5oex.599 X.6WX.629 X.630-X.639 X.640-X.649 X.650-X.679 X.680-X.699 x.700-x.709 X.7 10-X.7 19 X.720-X.729 x.730-x.799 X.800-X.849 X.850-X.859 X.860-X.879 X.880-X.89

7、9 x.9wx.999 Forfurther details, please refer to ITU-T List of Recommendations. STDnITU-T RECMN X-IIOV-ENGL 1999 W 48b2591 Ob74bOb 217 TECHNICAL REPORT 10021-11 ITU-T RECOMMENDATION X.404 INFORMATION TECHNOLOGY - MESSAGE HANDLING SYSTEMS (MHS): MHS ROUTING - GUIDE FOR MESSAGING SYSTEM MANAGERS Summar

8、y This ITU-T Rec. X.404 I ISO/IEC TR10021-11 provides guidance for configuring MTS routing using the directory, and suggests the characteristics of a directory user agent for managing that process. It allows OR-address plans, MTA interconnection topology and the management structures applied to MHS

9、to be dealt with independently of each other whilst remaining within a coordinated framework. Source The ITU-T Recommendation X.404 was approved on the 18th of June 1999. The identical text is also published as ISO/IEC Technical Report 1002 1- 1 1. ITU-T Rec. X.404 (1999 E) i FOREWORD ITU (Internati

10、onal Telecommunication Union) is the United Nations Specialized Agency in the field of telecommuni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommend

11、ations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the -T Study Groups which, in their turn, produce Recommendations on these topics. The

12、 approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendati

13、on, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of

14、 a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation

15、, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. Ali ri

16、ghts reserved. 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 the ITU. 11 ITU-T Rec. X.404 (1999 E) STD*ITU-T RECMN X-404-ENGL 3999 = 4862593 O674606 09T D 1 2 3

17、 4 5 6 CONTENTS scope Normative References 2.1 Identical Recommendations I International Standards . 2.2 Paired Recommendations I International Standards equivalent in technical . Definitions 3.1 MHS definitions 3.2 ASN.1 definitions 3.3 Directory definitions 3.4 Presentation Service definitions 3.5

18、 MHS-routing definitions . 3.6 MHS Routing Methodology Definitions . Abbreviations . Overview 5.1 The role of MHS Routing 5.2 Administrative Roles . 5.3 The Role of the MHS Routing Standard . 5.4 The advantages of using MHS Routing MHS Routing Concepts 6.1 6.2 . 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.1

19、1 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.2 1 6.22 6.23 6.24 6.25 Introduction . MHS The Message Routing Problem . A Directory Solution to Message Routing MHS-Routing use of the Directory . Scenario . General Directory Services and Functions Routing Collectives and Connection Groups Routing C

20、ollective Directory Representation Connection Groups Connection Group Directory Representation OR-address Plan OR-address plan directory representation in OR-address subtrees . MTA definitions The MTAs Message Routing Process MHS Routing Administrative Roles . MHS Routing Administrative Tasks . 6.17

21、.1 Organizational Requirements Analysis . 6.17.2 Design Tasks . 6.17.3 Configuring the Directory . 6.17.4 MTA Configuration . 6.17.5 MTA Initialization . Prerequisites for MHS Routing . The user community Organizational messaging administrative structures . Available Communications Infrastructure .

22、Messaging Traffic Patterns and Volumes Organizational Requirements Analysis . Cultural requirements and constraints . Existing, non-standard and other Messaging Systems Page 1 1 1 1 1 2 2 2 2 2 3 3 3 3 4 5 6 6 6 7 7 8 8 9 9 10 12 12 13 13 13 14 14 15 15 16 16 17 20 20 21 21 22 22 22 22 23 23 ITU-T R

23、ec . X.404 (1999 E) . 111 STDmITU-T RECMN X.404-ENGL 1999 = 48b2591 Ob74b09 T26 6.26 6.27 6.28 6.29 6.30 6.3 1 6.32 6.33 6.34 6.35 6.36 Security requirements Specific message routing requirements or policies . Alternative routing capability Directory systems availability . Distribution lists MTS Top

24、ology Design General Guidance Input information . Results of the Topology design process Identifying Connection Groups for MTAs Results . 7 OR-address Plan Design . 7.1 General 7.2 Information Input 7.3 OR-address plan specification . 7.4 Special Cases 7.5 OR-address Registration Authority Roles . 7

25、.6 Results of the OR-address plan design Routing Collective Design and Configuration . 8.1 Introduction . 8.2 Directory Information Base Preparation . 8.3 Directory Information Base Configuration . 8.4 Connection Groups 8.4.2 Adding a Connection Group to a Routing Collective . 8.4.3 Deleting a Conne

26、ction Group Definition 8.4.4 Routing Collectives . 8.4.5 Identifying Routing Collectives 8.4.7 Creating the top level Routing Collective . 8.4.8 8.4.9 8.4.10 Configuring Routes for MTAs in OR-address subtrees 8.5.1 OR-address subtree types 8.5.2 OR-address subtrees Model . 8.5.4 8.5.6 Establishing E

27、xternal Routes to destinations outside the routing collective . 8.5.7 Distributing Access to External routes through a routing collective . 8.5.8 Establishing Routes to non-Routing MTAs or proprietary messaging systems . 8.5.9 Default Routes . OR-address subtree Entry Routing Information Configurati

28、on 8.6.1 OR-address attribute registration . 8 8.4.1 Defining Connection Groups 8.4.6 Routing Collective Definition . Adding a Subordinate Routing Collective . Deleting a Routing Collective . Adding Proxy routing collectives 8.5 8.5.3 Routing Information Specifying OR-address subtree bases 8.5.5 Bui

29、lding OR-address subtrees . 8.6 8.6.2 The Target Routing Collective Instruction 8.6.3 MHS User Instruction . 8.6.4 Aliases . 8.6.5 Aliasing Techniques 8.6.6 Alias OR-address Instructions for Personal Names 8.6.7 The Alias Redirection Instruction . 8.6.8 The Non-delivery Instruction 8.6.9 The Distrib

30、ution List Instruction . 8.6.10 The Recipient MD Assigned Alternate Recipient Instruction . 8.6.11 The Double Enveloping Instruction 8.6.12 The Expression Matches Instruction . 8.6.13 Truncating an OR-address subtree Page 23 23 23 23 24 24 24 24 25 26 26 27 27 27 27 28 28 28 29 29 30 31 32 32 33 33

31、34 34 35 35 35 35 35 36 36 36 37 37 38 40 41 42 42 42 42 43 43 44 44 44 44 45 46 46 47 48 48 iv ITU-T RW . X.404 (1999 E) STD.1TI.J-T RECMN X-404-ENGL 1999 m 48b2591 Ob74b10 748 8.7 Organizing an MTAs OR-address subtrees 8.7.1 The MTAs OR-address subtree sequence 8.9 Configuring an MTA . 8.8 Publish

32、ing Routing Capabilities 8.9.1 Routing MTA Entry 8.9.2 mHSMessageTransferAgent Entry 8.10 MTA Initialization . 8.11 MTA Cache information . Directory Information Base Guide . 9.1 Directory Information Structure 9.2 The Routing Collective Object Class Routing MTA Object Class . The Connection Group O

33、bject Class . 9.4 MTA Components . MTA Information Object Class . 9.5 OR-address subtree Components The OR-address Element object class . 9 Routing collective subtree components . 9.3 Connection Group . 9.2.1 9.2.2 9.3.1 9.4.1 9.5.1 10 Annex A - Scenarios . A.l Single MTA MD connected only to an ADM

34、D A.2 A small MD under a single management A.3 Large MD with autonomous management A.4 The open access connection group case AS Collection of MDs . A.6 Secret OR-addresses Annex B - MHS Routing DUA Specification . Provision of the MHS Routing Directory Service Page 49 49 49 49 50 50 50 51 51 51 51 5

35、1 51 52 52 52 52 53 53 53 55 55 55 55 56 56 56 57 ITU-T Rec . X.404 (1999 E) V STD-ITU-T RECMN X-404-ENGL 1999 m 4862591 0674611 684 m Introduction This Recommendation I Technical Report is one of a set of Recommendations I number of parts of ISO/IEC 10021 defining Message Handling in a distributed

36、open systems environment. ITU-T Rec. X.412 I ISO/iEC 10021-10 defines a method for routing messages through the Message Handling System (MHS). This Recommendation I Technical Report provides guidance for Configuring MTS Routing using the Directory, and suggests the characteristics of a Directory Use

37、r Agent for managing that process. It allows OR-address plans, MTA interconnection topology and the management structures applied to MHS to be dealt with independently of each other whilst remaining within a Co-ordinated framework. vi ITU-T REX. X.404 (1999 E) STD-ITU-T RECMN XmVOV-ENGL 1999 4Bb2591

38、 Ob74bLZ 5LO E ISO/IEC TR 10021-11 : 1999 (E) TECHNICAL REPORT ITU-T RECOMMENDATION INFORMATION TECHNOLOGY - MESSAGE HANDLING SYSTEMS (MHS): MHS ROUTING - GUIDE FOR MESSAGING SYSTEM MANAGERS 1 Scope This Recommendation I Technical Report specifies the means by which the administrator of various aspe

39、cts of an MHS system may configure information into the directory for MTAs to use to determine the routing of messages. IT-T Rec. X.412 I ISOIIEC 10021-10 provides a set of directory structures that may be configured in many different ways to support a particular MHS routing strategy. In order to il

40、lustrate the use of these directory structures, this document contains advice on how an MHS Administrator might organize the configuration of directory trees and entries in the directory. In particular, it contains suggestions on the following: The types, construction and location of different OR-ad

41、dress subtrees that may be needed; The location of routing collective and MTA entries in the directory. - - Other ways of using the routing capabilities specified in ITU-T Rec. X.412 I ISO/iEC 10021-10 are also valid. Other Recommendations I International Standards define other aspects of the MHS. I

42、TU-T Rec. F.400BC.400 I ISO/IEC 10021-1 defines the user-oriented services provided by the MHS. ITU-T Rec. X.402 I ISO/IEC 10021-2 provides an architecturai overview of the MHS. ITU-T Rec. X.411 I ISO/IEC 10021-4 defines the abstract-service of the Message Transfer System. ITU-T Rec. X.412 I ISO/IEC

43、 10021-10 defines MHS Routing using the directory. 2 Normative References The following Recommendations and International Standards contain provisions which, through reference in this text, constitute provisions of this Recommendation I Technical Report. At the time of publication, the editions indi

44、cated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation I Technical Report are encouraged to investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below. Members of IEC a

45、nd IS0 maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid ITU-T Recommendations. 2.1 Identical Recommendations I International Standards - ITU-T Recommendation X.216 (1994) I ISO/IEC 8822: 1994, I

46、nformation technology - Open Systems Interconnection - Presentation service definition. ITU-T Recommendation X.402 (1995) I ISOAEC 10021-2:1996, Information technology - Message Handling Systems (MHS): Overall architecture. ITU-T Recommendation X.412 (1999) I ISO/IEC 10021-10:1998, Information techn

47、ology - Message Handling Systems (MHS): MHS routing. ITU-T Recommendation X.500 (1997) I ISO/IEC 9594-1:1998, Information technology - Open Systems Interconnection - The Directory: Overview of concepts, models and services. - - - 2.2 Paired Recommendations I International Standards equivalent in tec

48、hnical content - CCITT Recommendation X.208 (19981, Specification of Abstract Syntax Notation One (ASN.1). ISO/IEC 8824: 1990, Information technology - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1). ITU-T Rec. X.404 (1999 E) 1 - ITU-T Recommendation F.400BL.400

49、 (1999), Message handling services: Message handling system and service overview. ISO/IEC 1002 1- 1 : 1990, Information technology - Text Communication - Message Oriented Text Interchange Systems (MOTIS) - Part 1: System and service overview. 3 Definitions For the purposes of this Recommendation I Technical Report, the following definitions apply. 3.1 MHS definitions The following terms are formally defined in IT-T Rec. X.402 I ISO/IEC 10021-2: - OR-address; - MTA; - MTS; - MHS; - Message Store; - User Agent; - w; - P3; - MD; - ADMD; - PRMD; - Security Context. 3.2 AS