RFC 2271 SNMPv3 Architecture January 1998 2.1. Document Roadmap .......................................... 10 2.2. Applicability Statement ................................... 10 2.3. Coexistence and Transition ................................ 10 2.4. Transport Mappings ........................................ 11 2.5. Message Processing ........................................ 11 2.6. Security .................................................. 11 2.7. Access Control ............................................ 11 2.8. Protocol Operations ....................................... 12 2.9. Applications .............................................. 12 2.10. Structure of Management Information ...................... 12 2.11. Textual Conventions ...................................... 13 2.12. Conformance Statements ................................... 13 2.13. Management Information Base Modules ...................... 13 2.13.1. SNMP Instrumentation MIBs .............................. 13 2.14. SNMP Framework Documents ................................. 13 3. Elements of the Architecture ................................ 14 3.1. The Naming of Entities .................................... 14 3.1.1. SNMP engine ............................................. 15 3.1.1.1. snmpEngineID .......................................... 16 3.1.1.2. Dispatcher ............................................ 16 3.1.1.3. Message Processing Subsystem .......................... 16 3.1.1.3.1. Message Processing Model ............................ 17 3.1.1.4. Security Subsystem .................................... 17 3.1.1.4.1. Security Model ...................................... 17 3.1.1.4.2. Security Protocol ................................... 18 3.1.2. Access Control Subsystem ................................ 18 3.1.2.1. Access Control Model .................................. 18 3.1.3. Applications ............................................ 18 3.1.3.1. SNMP Manager .......................................... 19 3.1.3.2. SNMP Agent ............................................ 20 3.2. The Naming of Identities .................................. 21 3.2.1. Principal ............................................... 21 3.2.2. securityName ............................................ 21 3.2.3. Model-dependent security ID ............................. 22 3.3. The Naming of Management Information ...................... 22 3.3.1. An SNMP Context ......................................... 23 3.3.2. contextEngineID ......................................... 24 3.3.3. contextName ............................................. 24 3.3.4. scopedPDU ............................................... 25 3.4. Other Constructs .......................................... 25 3.4.1. maxSizeResponseScopedPDU ................................ 25 3.4.2. Local Configuration Datastore ........................... 25 3.4.3. securityLevel ........................................... 25 4. Abstract Service Interfaces ................................. 26 4.1. Dispatcher Primitives ..................................... 26 4.1.1. Generate Outgoing Request or Notification ............... 26 4.1.2. Process Incoming Request or Notification PDU ............ 26 4.1.3. Generate Outgoing Response .............................. 27 Harrington, et. al. Standards Track