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SetNumForwardPackets method of the Win32_NetworkAdapterConfiguration class

The SetNumForwardPackets WMI class static method is used to set the number of IP packet headers allocated for the router packet queue. When all headers are in use, the router will begin to discard packets from the queue at random.

This topic uses Managed Object Format (MOF) syntax. For more information about using this method, see Calling a Method.

Syntax


uin32 SetNumForwardPackets(
  [in]  uint32 NumForwardPackets
);

Parameters

NumForwardPackets [in]

Number of IP packet headers allocated for the router packet queue. This should be at least as large as the value of the ForwardBufferMemory property divided by the maximum IP data size of the networks connected to the router. It should be no larger than the ForwardBufferMemory value divided by 256, since at least 256 bytes of forward buffer memory are required by each packet. The optimal number of forward packets for a given ForwardBufferMemory size depends on the type of traffic carried on the network, and will be somewhere between these two values. If the router is disabled, this parameter is ignored and no headers are allocated. Valid range: 1 - 0xFFFFFFFE.

Return value

Return codeDescription
0

Successful completion, no reboot required.

1

Successful completion, reboot required.

64

Method not supported on this platform.

65

Unknown failure.

66

Invalid subnet mask.

67

An error occurred while processing an instance that was returned.

68

Invalid input parameter.

69

More than five gateways specified.

70

Invalid IP address.

71

Invalid gateway IP address.

72

An error occurred while accessing the registry for the requested information.

73

Invalid domain name.

74

Invalid host name.

75

No primary or secondary WINS server defined.

76

Invalid file.

77

Invalid system path.

78

File copy failed.

79

Invalid security parameter.

80

Unable to configure TCP/IP service.

81

Unable to configure DHCP service.

82

Unable to renew DHCP lease.

83

Unable to release DHCP lease.

84

IP not enabled on adapter.

85

IPX not enabled on adapter.

86

Frame or network number bounds error.

87

Invalid frame type.

88

Invalid network number.

89

Duplicate network number.

90

Parameter out of bounds.

91

Access denied.

92

Out of memory.

93

Already exists.

94

Path, file, or object not found.

95

Unable to notify service.

96

Unable to notify DNS service.

97

Interface not configurable.

98

Not all DHCP leases could be released or renewed.

100

DHCP not enabled on adapter.

 

Examples

The Modify the Number of Allowed Forward Packets VBScript sample configures the number of forward packets allocated to the router packet queue.

Requirements

Minimum supported client

Windows Vista

Minimum supported server

Windows Server 2003

Namespace

\root\CIMV2

MOF

CIMWin32.mof

DLL

CIMWin32.dll

See also

Computer System Hardware Classes
Win32_NetworkAdapterConfiguration
WMI Tasks: Networking
WMI Tasks: Accounts and Domains
IPv6 and IPv4 Support in WMI

 

 

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