SnmpSetTimeout function (winsnmp.h)

[SNMP is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions. Instead, use Windows Remote Management, which is the Microsoft implementation of WS-Man.]

The WinSNMP SnmpSetTimeout function enables a WinSNMP application to change the time-out value for the transmission of SNMP message requests. The time-out value applies to calls that a WinSNMP application makes to the SnmpSendMsg function for a specified management entity. The Microsoft WinSNMP implementation stores the value in a database.


  [in] HSNMP_ENTITY hEntity,
  [in] smiTIMETICKS nPolicyTimeout


[in] hEntity

Handle to the destination management entity of interest.

[in] nPolicyTimeout

Specifies a new time-out value, in hundredths of a second, for the management entity. This value replaces the value currently stored in the implementation's database.

If this parameter is equal to zero, and the current retransmission mode is equal to SNMPAPI_ON, the implementation selects a time-out value. The implementation uses this time-out value when it executes the WinSNMP application's retransmission policy.

Return value

If the function succeeds, the return value is SNMPAPI_SUCCESS.

If the function fails, the return value is SNMPAPI_FAILURE. To get extended error information, call SnmpGetLastError specifying a NULL value in its session parameter. The SnmpGetLastError function can return one of the following errors.

Return code Description
The SnmpStartup function did not complete successfully.
An error occurred during memory allocation.
The hEntity parameter is invalid.
An unknown or undefined error occurred.


Typically a WinSNMP manager application, rather than an agent application, calls the SnmpSetTimeout function.

For additional information, see About Retransmission and Managing the Retransmission Policy.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header winsnmp.h
Library Wsnmp32.lib
DLL Wsnmp32.dll

See also




WinSNMP Functions

WinSNMP API Overview