SNMP Protocol Operations

   GetRequest-PDU ::= [0] IMPLICIT PDU
   GetNextRequest-PDU ::= [1] IMPLICIT PDU
   Response-PDU ::= [2] IMPLICIT PDU
   SetRequest-PDU ::= [3] IMPLICIT PDU
   GetBulkRequest-PDU ::= [5] IMPLICIT BulkPDU
   InformRequest-PDU ::= [6] IMPLICIT PDU
   SNMPv2-Trap-PDU ::= [7] IMPLICIT PDU
   Report-PDU ::= [8] IMPLICIT PDU

Get
Fetch value of MIB variable
OID given in request

GetNext
Fetch value of MIB variable
previous OID given in request
OID of variable returned in response

Set
Set the value of a MIB variable
OID given in request