The DL_SUBS_BIND_REQ DLPI request message is only valid if the original bind was to type 0xAA (SNAP). The subsequent bind will filter on the SNAP information.
typedef struct {
ULONG dl_primitive;
ULONG dl_subs_sap_offset;
ULONG dl_subs_sap_length;
ULONG dl_subs_bind_class;
} dl_subs_bind_req_t;
Members
dl_primitive
Must be the manifest constant DL_SUBS_BIND_REQ_T
dl_subs_sap_offset
Specifies offset to byte sequence below. The offset points to the byte sequence composed of the SNAP header followed by the Ethernet type.
SNAP header
3 bytes
Ethernet type
2 bytes
dl_subs_sap_length
Specifies length of SAP; must be 5.
dl_subs_bind_class
Specifies subsequent bind class; must be DL_HIERARCHICAL_BIND.