Extension Agents API

Each extension agent must export at least the following three APIs:

• SnmpExtensionInit--extension agent returns OID Namespace supported and address of an event to be signaled by the extension agent when it wishes to transmit a trap.

• SnmpExtensionQuery --extension agent resolves Set/Get/GetNext request associated with the VarBind Passed in by extendible agent.

• SnmpExtensionTrap--returns with formatted Trap PDU to be transmitted.

In addition, the extension agent may support a fourth API, SnmpExtensionInitEx. This API allows a single extension agent to support multiple MIBs or multiple MIB views from a single DLL.