ISO INTERNATIONAL STANDARD 15784-2 Firstedition 2015-11-01 Intelligent transport systems (ITS) - Data exchange involving roadside modules communication - Part 2: Centre to field device communications using SNMP Systemes intelligents de transport (SIT) - Echange de données impliquant la communication de modules en bordure de route - Partie 2: Communications par dispositif du centre au terrain en utilisant le protocole simple de gestion de reseau (SNMP) Reference number ISO 15784-2:2015(E) ISO International Organization for Standardization @ IS0 2015 HEJIANG INST OF STANDARDIZATION C15956617 ed without license from IHS IS015784-2:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ05 -All rights reserved etworking permitted without license from IHS IS0 15784-2:2015(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope.. 1.1 General. .1 1.2 Overview 1 2 Conformance .2 3 Normative references 4 Terms and definitions 5 Symbols and abbreviated terms ..5 6 Overview. .6 6.1 Conventions .6 6.1.1 ASN.1 6.1.2 SNMP terminology .6 6.1.3 Format.. 6.2 ASN.1 modules and MIBs. .6 6.3 Logical architecture ..7 6.4 Relationship to the OSI model .7 7 Requirements ..8 7.1 Overview ..8 7.2 Terminology and architecture ..8 7.3 Message processing and dispatching. .8 7.3.1 General. .8 7.3.2 Version 1 Message Processing Model 9 7.3.3 Version 2 Message Processing Model .9 7.3.4 Version 3 Message Processing Model .9 7.3.5 STMP Message Processing Model. 7.4 Applications .10 7.4.1 Entity type. 10 7.4.2 Command generator. ..10 7.4.3 Command responder. ..10 7.4.4 Notification originator .10 7.4.5 Notification receiver. .10 7.4.6 Proxy forwarder ..10 7.5 Security models. .10 7.5.1 User-based Security Model for SNMP version 2 ..10 7.5.2 User-based Security Model for SNMP version 3 .10 7.5.3 Transport Security Model 11 7.6 View-based Access Control .11 7.7 Protocol operations. .11 7.7.1 SNMPv1 .11 7.7.2 SNMPv2. .12 7.7.3 SNMPv3. 12 7.7.4 STMP. .12 7.7.5 Request ID variation. .12 7.8 Transport mappings. .12 7.8.1 UDP over IPv4 .12 7.8.2 UDP over IPv6 .12 7.8.3 TCP over IPv4 .13 7.8.4 TCP overIPv6 ..13 7.8.5 Secure Transport Model .13 7.9 Management Information Base (MIB) ..13 7.9.1 Agent MIBs. .13 ntemaional ganzation@sS25-All rights reserved iii nsee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ovided byIHS underlicense withISO ithout license from IHS Not for Resale, 2016/1/8 02:01:41