The LLC_ADAPTER_OPEN_PARMS structure represents the open parameters for the LLC_DIR_OPEN_ADAPTER command. You pass a pointer to this structure in the LLC_DIR_OPEN_ADAPTER_PARMS structure.
typedef struct {
    USHORT usOpenErrorCode; 
    USHORT usOpenOptions; 
    UCHAR auchNodeAddress[6]; 
    UCHAR auchGroupAddress[4]; 
    UCHAR auchFunctionalAddress[4]; 
    USHORT usReserved1;
    USHORT usReserved2;
    USHORT usMaxFrameSize; 
    USHORT usReserved3[4];
    USHORT usBringUps; 
    USHORT InitWarnings;
    USHORT usReserved4[3];
} LLC_ADAPTER_OPEN_PARMS, *PLLC_ADAPTER_OPEN_PARMS;
 | Bit | Description | 
|---|---|
| 15 | The adapter will not attach itself to the network. Instead, it causes all transmitted user data to be wrapped as received data. | 
| 14 | Disables hard errors. | 
| 13 | Disables soft errors. | 
| 12 | Passes, as direct interface data, all adapter-class MAC frames that are received but not supported by the adapter. Otherwise, these frames are ignored. | 
| 11 | Passes, as direct interface data, all attention MAC frames that are not the same as the last attention MAC frame received. Otherwise, these frames are ignored. | 
| 10 | Reserved; should be 0. | 
| 9 | Reserved; should be 0. | 
| 8 | Participates in monitor contention. Otherwise, this adapter does not participate. | 
| 7 | Passes, as direct interface data, the first beacon MAC frame and all subsequent beacon MAC frames that have a change in the source address or the beacon type. | 
| 6 | Reserved; should be 0. | 
| 5 | Prevents the adapter from becoming a monitor during the open process. This bit is implemented only in 16/4 adapters. | 
| 4 | Selects no early token releases for an adapter operating at 16 Mbps. Otherwise, use the early token release. | 
| 3 | Reserved; should be 0. | 
| 2 | Reserved; should be 0. | 
| 1 | Reserved; should be 0. | 
| 0 | Reserved; should be 0. | 
| Value | Meaning | 
|---|---|
| 0 | No errors detected during configuration parameter processing. | 
| 1 | No configuration parameters found. | 
| 2 | Errors detected during configuration parameter processing; default values were used. | 
  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in dlcapi.h.
The DLC Interface Overview, DLC Structures, AcsLan, LLC_DIR_OPEN_ADAPTER_PARMS