Network Monitoring and Data Center Operation - SOI-Asia

SNMP - Version - SNMP v1 RFC1157• When Manager requests, Agent returns response• Agent sends trap when specific event has occurred SNMP v2 RFC1902• Basic of features are almost the same as those of v1• Additional regulation 64bit counter : can deal with large numerical value Get-bulk request : used to efficiently retrieve large blocks of data Supports the use of encryption of messages SNMP v3 RFC22712275• Additional regulation Various security function : MD5 user authentication,DES encryption Dynamically configure the SNMP Agent using SNMP SETcommandsSNMP - MIB & OID - SNMP Manager can acquire the managementinformation defined by MIB(Management InformationBase) from Agent• Current version : MIBv2 RFC 1213• MIB is the aggregate of object (information) on theequipment which SNMP Agent holds• Identifier is defined for each object = OID• MIB performed by Agent is roughly divided into: MIBv2 : standard, public, specified by IETF Enterprise MIB : private, specified by vendor company9