RFC 2262 (rfc2262) - Page 2 of 39

Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)

RFC 2262               SNMPv3 Management Protocol           January 1998


   4.1.1. Sending a Request or Notification ......................    7
   4.1.2. Sending a Response to the Network ......................    9
   4.2. Receiving an SNMP Message from the Network ...............   10
   4.2.1. Message Dispatching of received SNMP Messages ..........   10
   4.2.2. PDU Dispatching for Incoming Messages ..................   11
   4.2.2.1. Incoming Requests and Notifications ..................   12
   4.2.2.2. Incoming Responses ...................................   13
   4.3. Application Registration for Handling PDU types ..........   14
   4.4. Application Unregistration for Handling PDU Types ........   14
   5. Definitions ................................................   15
   5.1. Definitions for SNMP Message Processing and Dispatching ..   15
   6. The SNMPv3 Message Format ..................................   18
   6.1. msgVersion ...............................................   19
   6.2. msgID ....................................................   19
   6.3. msgMaxSize ...............................................   19
   6.4. msgFlags .................................................   20
   6.5. msgSecurityModel .........................................   22
   6.6. msgSecurityParameters ....................................   22
   6.7. scopedPduData ............................................   22
   6.8. scopedPDU ................................................   22
   6.8.1. contextEngineID ........................................   22
   6.8.2. contextName ............................................   23
   6.8.3. data ...................................................   23
   7. Elements of Procedure for v3MP .............................   23
   7.1. Prepare an Outgoing SNMP Message .........................   24
   7.2. Prepare Data Elements from an Incoming SNMP Message ......   29
   8. Intellectual Property ......................................   34
   9. Acknowledgements ...........................................   35
   10. Security Considerations ...................................   36
   11. References ................................................   36
   12. Editors' Addresses ........................................   38
   13. Full Copyright Statement ..................................   39

1.  Introduction

   The Architecture for describing Internet Management Frameworks
   [RFC 2261] describes that an SNMP engine is composed of:

        1) a Dispatcher
        2) a Message Processing Subsystem,
        3) a Security Subsystem, and
        4) an Access Control Subsystem.

   Applications make use of the services of these subsystems.

   It is important to understand the SNMP architecture and its
   terminology to understand where the Message Processing Subsystem and
   Dispatcher described in this document fit into the architecture and



Case, et. al.               Standards Track