SetNumForwardPackets method

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


uint32 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

Returns a value of 0 (zero) for a successful completion when no reboot is required, 1 (one) for a successful completion when a reboot is required, and a different number if there is an error. For more information on error codes, see WMI Error Constants or WbemErrorEnum. For general HRESULT values, see System Error Codes.

Successful completion, no reboot required

0

Successful completion, no reboot required.

Successful completion, reboot required

1

Successful completion, reboot required.

Method not supported on this platform

64

Method not supported on this platform.

Unknown failure

65

Unknown failure.

Invalid subnet mask

66

Invalid subnet mask.

An error occurred while processing an Instance that was returned

67

An error occurred while processing an instance that was returned.

Invalid input parameter

68

Invalid input parameter.

More than 5 gateways specified

69

More than five gateways specified.

Invalid IP address

70

Invalid IP address.

Invalid gateway IP address

71

Invalid gateway IP address.

An error occurred while accessing the Registry for the requested information

72

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

Invalid domain name

73

Invalid domain name.

Invalid host name

74

Invalid host name.

No primary/secondary WINS server defined

75

No primary or secondary WINS server defined.

Invalid file

76

Invalid file.

Invalid system path

77

Invalid system path.

File copy failed

78

File copy failed.

Invalid security parameter

79

Invalid security parameter.

Unable to configure TCP/IP service

80

Unable to configure TCP/IP service.

Unable to configure DHCP service

81

Unable to configure DHCP service.

Unable to renew DHCP lease

82

Unable to renew DHCP lease.

Unable to release DHCP lease

83

Unable to release DHCP lease.

IP not enabled on adapter

84

IP not enabled on adapter.

IPX not enabled on adapter

85

IPX not enabled on adapter.

Frame/network number bounds error

86

Frame or network number bounds error.

Invalid frame type

87

Invalid frame type.

Invalid network number

88

Invalid network number.

Duplicate network number

89

Duplicate network number.

Parameter out of bounds

90

Parameter out of bounds.

Access denied

91

Access denied.

Out of memory

92

Out of memory.

Already exists

93

Already exists.

Path, file or object not found

94

Path, file, or object not found.

Unable to notify service

95

Unable to notify service.

Unable to notify DNS service

96

Unable to notify DNS service.

Interface not configurable

97

Interface not configurable.

Not all DHCP leases could be released/renewed

98

Not all DHCP leases could be released or renewed.

DHCP not enabled on adapter

100

DHCP not enabled on adapter.

Other

101–4294967295

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 2008

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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