IF_OPER_STATUS enumeration (ifdef.h)

The IF_OPER_STATUS enumeration specifies the operational status of an interface.

Syntax

typedef enum {
  IfOperStatusUp = 1,
  IfOperStatusDown,
  IfOperStatusTesting,
  IfOperStatusUnknown,
  IfOperStatusDormant,
  IfOperStatusNotPresent,
  IfOperStatusLowerLayerDown
} IF_OPER_STATUS;

Constants

IfOperStatusUp Value: 1 The interface is up and operational. The interface is able to pass packets.
IfOperStatusDown The interface is not down and not operational. The interface is unable to pass packets.
IfOperStatusTesting The interface is being tested.
IfOperStatusUnknown The interface status is unknown.
IfOperStatusDormant The interface is not in a condition to pass packets. The interface is not up, but is in a pending state, waiting for some external event. This state identifies the situation where the interface is waiting for events to place it in the up state.
IfOperStatusNotPresent This state is a refinement on the down state which indicates that the interface is down specifically because some component (for example, a hardware component) is not present in the system.
IfOperStatusLowerLayerDown This state is a refinement on the down state. The interface is operational, but a networking layer below the interface is not operational.

Remarks

The IF_OPER_STATUS enumeration is used in the OperStatus member of the IP_ADAPTER_ADDRESSES structure.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	ifdef.h

See also

IP_ADAPTER_ADDRESSES