CH06-1 - CH6 SNMPV2 OBJECTIVES Community-based security...

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OBJECTIVES Community-based security SNMPv2 enhancements Additional messages Formalization of SMI Get-bulk request and information-request SNMP MIB modifications Incompatibility with SNMPv1 Proxy server Bilingual manager Major Changes Bulk data transfer Manager-to-manager message Enhancements to SMI: SMIv2 Module definitions: MODULE-IDENTITY macro Object definitions: OBJECT-TYPE macro Trap definitions: NOTIFICATION-TYPE macro Textual conventions Conformance statements Row creation and deletion in table MIB enhancements Transport mappings Notes Security features, originally to be in SNMPv2 moved to SNMPv3 SNMPv2, like SNMPv1, is community-based administrative framework SNMPv2 Internet Group Objects added to System group Extensive modification of the SNMP group Additional SNMPv2 group added Security group is a placeholder pg. 1 CH6: SNMPV2
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Bulk Data Transfer Message : o Two significant messages were added. o The first is the ability to request and receive bulk data using the get-bulk message. o This speeds up the get-next-request process and is especially useful to retrieve data from tables. Manager-to-Manager Message : o The second additional message deals with interoperability between two network management systems. o This extends the communication of management messages between management systems and thus makes network management systems interoperable. Structure of Management Information (SMI): o In SNMPv1, SMI is defined as STD 16, which is described in RFCs 1155 and 1212, along with RFC 1215, which describes traps. o They have been consolidated and rewritten in RFCs 1902–1904 for SMI in SNMPv2. RFC 1902 deals with SMIv2, RFC 1903 with textual conventions, and RFC 1904 with conformances.
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