The bit array that contains the bit map of all possible entities for event logging pre-filter control. There are total of 64 entities. Each entity represented by one bit. A bit with a value of 1 means that the corresponding Entity is enabled for event logging, 0 when the event logging is disabled for the corresponding entity. The following show the bit position and associated entity. Bit 0 - SNMP_ENT_ATM_PORT Bit 1 - SNMP_ENT_BOOTP Bit 2 - SNMP_ENT_CLC Bit 3 - SNMP_ENT_CLI Bit 4 - SNMP_ENT_CONFIG Bit 5 - SNMP_ENT_ETHERNET Bit 6 - SNMP_ENT_FDB Bit 7 - SNMP_ENT_HW Bit 8 - SNMP_ENT_IISP Bit 9 - SNMP_ENT_ILMI Bit 10 - SNMP_ENT_IP Bit 11 - SNMP_ENT_LANE Bit 12 - SNMP_ENT_LEC Bit 13 - SNMP_ENT_MCP Bit 14 - SNMP_ENT_SIGNL Bit 15 - SNMP_ENT_SNMP Bit 16 - SNMP_ENT_STP Bit 17 - SNMP_ENT_TELNET Bit 18 - SNMP_ENT_TFTP Bit 19 - SNMP_ENT_TOKENRING Bit 20 - SNMP_ENT_VPORT Bit 21 - SNMP_ENT_MPOA When a new entity is created, a new bit position should also be defined. The order of bit is defined as bit 0-7 in the lowest oder of byte (first byte), bit 8-15 in the second lowest order of byte(second bye), and so on. The lower number of bit is the least significant bit within the byte.