RFC 2272 (rfc2272) - Page 2 of 39

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

RFC 2272               SNMPv3 Management Protocol           January 1998


   3.1. messageProcessingModel ...................................    6
   3.2. pduVersion ...............................................    6
   3.3. pduType ..................................................    7
   3.4. sendPduHandle ............................................    7
   4. Dispatcher Elements of Procedure ...........................    7
   4.1. Sending an SNMP Message to the Network ...................    7
   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 2271] 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.



Case, et. al.               Standards Track