TLI/XTI for SPX/SPXII

TLI/XTI for SPX/SPXII

This section describes the functions and structures used by NetWare^®'s Sequenced Packet Exchange (SPX/SPXII) protocol under the UNIX^® Transport Layer Interface (TLI). Application developers should have a working knowledge of both NetWare and TLI/XTI.

For information on the SPXII protocol, packet structure and fields, and data flow, windowing and packet size negotiation, see ``Enhanced sequenced packet exchange (SPXII) protocol''.

To compare the SPXII protocol with the earlier SPX protocol, see ``Sequenced packet exchange (SPX) protocol''.

Application developers should use the enhanced SPXII protocol, which is backward compatible with SPX. The SPXII driver can open either /dev/nspx2 or /dev/nspx. (Code samples, with two exceptions, use /dev/nspx2.)

NOTE: References to SPX/SPXII should be understood generically. The exception is when a distinction between SPX and SPXII is the subject of the discussion.