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SNMP Version 2 SNMPv2

2. Table of Contents. The Birth of SNMPv2SNMPv2 RFCsSNMPv2 EnhancementsSNMPv2 Protocol OperationsSNMPv2 Coexistence with SNMPv1. 3. The Birth of SNMPv2. a major problem with SNMP is the lack of securitysecure SNMP was proposed (July 1992) to solve this problem in SNMPSimple Management Protocol

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SNMP Version 2 SNMPv2

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    1. 1 SNMP Version 2 (SNMPv2) J. Won-Ki Hong Dept. of Computer Science and Engineering POSTECH Tel: 054-279-2244 Email: jwkhong@postech.ac.kr

    2. 2 Table of Contents The Birth of SNMPv2 SNMPv2 RFCs SNMPv2 Enhancements SNMPv2 Protocol Operations SNMPv2 Coexistence with SNMPv1

    3. 3 The Birth of SNMPv2 a major problem with SNMP is the lack of security secure SNMP was proposed (July 1992) to solve this problem in SNMP Simple Management Protocol (SMP) was also proposed (July 1992) to extend the SNMP functionality secure SNMP + SMP = SNMPv2 (March 1993) a major security flaw was detected in this proposal and the security aspects were dropped and the result is community-based SNMPv2 (Jan. 1996)

    4. 4 SNMPv2 RFCs RFC 1901 (experimental) Introduction to Community-based SNMPv2 RFC 1902 (draft) -> RFC 2578 (standard) Structure of Management Information for SNMPv2 (SMIv2) RFC 1903 (draft) -> RFC 2579 (standard) Textual Conventions for SMIv2 RFC 1904 (draft) -> RFC 2580 (standard) Conformance Statements for SMIv2

    5. 5 SNMPv2 RFCs (cont’d) RFC 1905 (draft) Protocol Operations for SNMPv2 RFC 1906 (draft) Transport Mappings for SNMPv2 RFC 1907 (draft) Management Information Base for SNMPv2 RFC 1908 (draft) Coexistence between Version 1 and Version 2 of the Internet-standard Network Management Framework

    6. 6 SNMPv2 Key Enhancements SMIv2 (a superset of SMIv1) provides more elaborate specification and documentation of managed objects and MIB modules object type macros expanded (see Fig. 11.1, 11.2 & Table 11.2) creating and deleting conceptual rows in a table (as used in RMON) notification definitions information modules new SNMP MIB definitions are defined using SMIv2 Manager-to-Manager Capability for managing large, distributed networks Protocol Operations bulk management information retrieval manager-to-manager communication

    7. 7 Comparison of Data Types

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