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SnmpMgrOpen info  Overview  Group

The SnmpMgrOpen function initializes communications sockets and data structures, allowing communications with the specified agent.

LPSNMP_MGR_SESSION SnmpMgrOpen(

    LPSTR lpAgentAddress, 

// name and address of target SNMP agent

    LPSTR lpAgentCommunity, 

// community for target SNMP agent

    INT nTimeOut, 

// communication time-out in milliseconds

    INT nRetries

// communication time-out or retry count

   );

Parameters

lpAgentAddress
[in] Points to a null-terminated string specifying 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.
lpAgentCommunity
[in] Points to a null-terminated string specifying the SNMP community name used when communicating with the agent specified in the lpAgentAddress parameter.
nTimeOut
[in] Specifies the communications time-out in milliseconds.
nRetries
[in] Specifies the communications retry count. The time-out specified in the nTimeOut parameter is doubled each time a retry attempt is transmitted.

Return Values

If the function succeeds, the return value is a pointer to an LPSNMP_MGR_SESSION structure. This structure is used internally and the programmer should not alter it.

If the function fails, the return value is NULL. To get extended error information, call GetLastError. GetLastError may return the SNMP_MEM_ALLOC_ERROR error code, which indicates a memory allocation error.

This function may also return Windows Sockets error codes.

The name and address of the SNMP target, or the string pointed to by the lpAgentAddress parameter, should conform to one of the following forms:

Name/Address

Form (example)

IP Address

157.57.8.160

IP Hostname

merlin.microsoft.com

Ethernet Address

00aa00bbccdd

IPX Address

00006112.00aa00bbccdd

Remarks

Names can be provided for agents only if TCP/IP is loaded and the names are TCP/IP host names. NetBIOS names cannot be supplied for IPX hosts.

See Also

SnmpMgrClose, SnmpMgrRequest


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