RFC 1909 (rfc1909) - Page 1 of 19
An Administrative Infrastructure for SNMPv2
Alternative Format: Original Text Document
Network Working Group K. McCloghrie, Editor
Request for Comments: 1909 Cisco Systems, Inc.
Category: Experimental February 1996
An Administrative Infrastructure for SNMPv2
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. This memo does not specify an Internet standard of any
kind. Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Table of Contents
1. Introduction ................................................ 2
2. Overview .................................................... 2
2.1 Contexts ................................................... 3
2.2 Authorization: Access Rights and MIB Views ................. 3
2.3 Authentication and Privacy ................................. 4
2.4 Access Control ............................................. 5
2.5 Security Models ............................................ 5
2.6 Proxy ...................................................... 5
3. Elements of the Model ....................................... 7
3.1 SNMPv2 Entity .............................................. 7
3.2 SNMPv2 Agent ............................................... 7
3.3 SNMPv2 Manager ............................................. 8
3.4 SNMPv2 Dual-Role Entity .................................... 8
3.5 View Subtree and Families .................................. 9
3.6 MIB View ................................................... 9
3.7 SNMPv2 Context ............................................. 10
3.7.1 Local SNMPv2 Context ..................................... 11
3.7.2 Proxy SNMPv2 Context ..................................... 11
3.8 SNMPv2 PDUs and Operations ................................. 12
3.8.1 The Report-PDU ........................................... 12
3.9 SNMPv2 Access Control Policy ............................... 13
4. Security Considerations ..................................... 13
5. Editor's Address ............................................ 14
6. Acknowledgements ............................................ 14
7. References .................................................. 14
Appendix A Disambiguating the SNMPv2 Protocol Definition ....... 16
Appendix B Who Sends Inform-Requests? ......................... 17
Appendix B.1 Management Philosophy ............................. 17
Appendix B.2 The Danger of Trap Storms ......................... 17
Appendix B.3 Inform-Requests ................................... 18
McCloghrie Experimental