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ISNMP::Open method

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The Open method enables an ASP Web page to create a communication path to a specified SNMP agent.

Syntax

HRESULT Open(
  [in] BSTR    bstrHost,
  [in] BSTR    bstrCommunity,
  [in] VARIANT varRetry,
  [in] VARIANT varTimeout
);

Parameters

bstrHost [in]
Caller-supplied pointer to a string identifying the SNMP agent system. This can be either a dotted-decimal IP address or a host name that can be resolved to an IP address, an IPX address (in 8.12 notation), or an ethernet address.

bstrCommunity [in]
Caller-supplied pointer to a string representing the SNMP agent system's community name.

varRetry [in]
Optional, caller-supplied retry value. If not specified, a default value is used. The recommended value is 2.

varTimeout [in]
Optional, caller-supplied time-out value, in milliseconds. If not specified, a default value is used. The recommended value is 1000.

Return value

Win32 error codes can also be returned.

Return code Description
S_OK The operation succeeded.
E_FAIL The call to SnmpMgrOpen failed.
E_INVALIDARG Either the varRetry or varTimeOut value could not be converted to a short integer.

VBScript example

This method calls the SnmpMgrOpen function, which has the same parameters as ISNMP::Open.

After the ISNMP::Open call, the communication path to the SNMP agent remains open until the ISNMP::Close method is called, or until ISNMP::Open is called again.

Dim StrIP, strCommunity, objSNMP
strIP = Session("MS_IPaddress")
strCommunity = Session ("MS_Community")
Set objSNMP = Server.CreateObject("OlePrn.OleSNMP")
objSNMP.Open strIP, strCommunity, 2, 1000

Requirements

Target platform: Desktop

Header: Olesnmp.h

See also

ISNMP::Close