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SetMTU method of the Win32_NetworkAdapterConfiguration class

The SetMTU WMI class static method is used to set the default Maximum Transmission Unit (MTU) for a network interface.

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

Syntax


uint32 SetMTU(
  uint32 MTU
);

Parameters

MTU

Default Maximum Transmission Unit (MTU) for a network interface. The range of this value spans the minimum packet size (68) to the MTU supported by the underlying network.

Return value

Return codeDescription
0

Successful completion. No reboot is required.

1

Successful completion. Reboot is 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 can be released or renewed.

100

DHCP is not enabled on adapter.

 

Remarks

The MTU is the maximum packet size (in bytes) that a transport will transmit over the underlying network. The size includes the transport header.

Note that an IP datagram can span multiple packets. Values larger than the default for the underlying network result in the transport using the network default MTU. Values smaller than 68 result in the transport using an MTU of 68.

Windows Server 2003:  This method is not supported. No replacement exists and the values do not correspond to the intended purpose of the method.

Examples

The Modify the MTU for all Network Adapters VBScript sample configures the maximum transmission unit for all network adapters installed in a computer.

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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