HP rp4440 HP DLPI Programmer's Guide - Page 64
Fiber Distributed Data Interface., Token-Passing Ring ISO 8802/5.
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DLPI Primitives Local Management Primitives Token-Passing Ring (ISO 8802/5). DL_METRO Metro Net (ISO 8802/6). DL_ETHER Ethernet Bus. DL_HDLC bit synchronous communication line. DL_CHAR character synchronous communication line. DL_CTCA channel-to-channel adapter. DL_FDDI Fiber Distributed Data Interface. DL_OTHER any other medium not listed above. NOTE dl_mac_type is not valid until after a dl_attach_req has been issued. dl_reserved reserved field whose value must be set to zero. dl_current_state state of the DLPI interface for the stream when the DLS provider issued this acknowledgment. dl_sap_length current length of the SAP component of the DLSAP address. It may have a negative, zero or positive. A positive value indicates the ordering of the SAP and PHSYCAL component within the DLSAP address as SAP component followed by PHYSICAL component. A negative value indicates PHYSICAL followed by the SAP. A zero 64 Chapter 2