New SNMP Programming Elements

[This is preliminary documentation and subject to change.]

The Microsoft® SNMP service for Windows NT® 5.0 adds support for the following programming features and elements:

• New SNMP extension agent functions
• New SNMP utility functions

In addition, the SNMP service adds support for the following structure:

• AsnCounter64

The SNMP service also introduces the following changes:

• Modified SNMP variable types
• Modified SNMP PDU request types

New SNMP Extension Agent Functions

The following new SNMP extension agent functions are available to SNMP extension agents that run on Windows NT 5.0 and later.

• SnmpExtensionClose
• SnmpExtensionQueryEx

New SNMP Utility Functions

The following new SNMP utility functions simplify manipulation of octet strings and AsnAny structures, and provide functionality that is useful during the development of SNMP applications.

• SnmpSvcGetUptime
• SnmpSvcSetLogLevel
• SnmpSvcSetLogType
• SnmpUtilAsnAnyCpy
• SnmpUtilAsnAnyFree
• SnmpUtilDbgPrint
• SnmpUtilOctetsCmp
• SnmpUtilOctetsCpy
• SnmpUtilOctetsFree
• SnmpUtilOctetsNCmp

Modified SNMP Variable Types

The definitions for some SNMP variable types have changed. The SNMP.H file maps old variable types to the corresponding new types.

You should use the new SNMP variable type when you develop manager applications that use the Microsoft SNMP Management API. The following table lists the old SNMP variable types with the corresponding new variable type.

Modified SNMP PDU Request Types

The definitions for some SNMP PDU types have changed. The SNMP.H file maps old PDU types to the corresponding new types.

You should use the new SNMP PDU type when you develop manager applications that use the Microsoft SNMP Management API. The following table lists the old SNMP PDU types with the corresponding new PDU type.