STD_BASED_SNMP_MESSAGE_PROCESSING_MODEL Enumeration

typedef enum {
  SNMPV1_MSG_PROCESSING_MODEL = 0X00,
  SNMPV2C_MSG_PROCESSING_MODEL = 0X01,
  SNMPV2U_V2_MSG_PROCESSING_MODEL = 0X02,
  SNMPV3_MSG_PROCESSING_MODEL = 0X03
} STD_BASED_SNMP_MESSAGE_PROCESSING_MODEL;

This is type STD_BASED_SNMP_MESSAGE_PROCESSING_MODEL.