SDISC Assembler Call - NetEx

Table of ContentsRevision Record ..................................................................................................................................................iPreface ................................................................................................................................................................iiReference Material .......................................................................................................................................... iiiNotice to the Reader .........................................................................................................................................ivCorporation Trademarks and Products ...........................................................................................................ivNotice to the Customer ...................................................................................................................................ivDocument Conventions....................................................................................................................................vGlossary ..........................................................................................................................................................viTable of Contents........................................................................................................................................... viiiFigures ...........................................................................................................................................................xiiTables.............................................................................................................................................................xiiIntroduction........................................................................................................................................................1External Interface.............................................................................................................................................1Internal Interaction...........................................................................................................................................1NETEX Connections .......................................................................................................................................1Design Efficiency and Flexibility ....................................................................................................................2Block Segmenting............................................................................................................................................2Alternate Path Retry.........................................................................................................................................2User Exits.........................................................................................................................................................2Remote Operator Interface...............................................................................................................................2Basic I/O Flow.................................................................................................................................................2Host Based NETEX .........................................................................................................................................3IP NETEX........................................................................................................................................................3CP NETEX ......................................................................................................................................................3DX NETEX......................................................................................................................................................3NESiGate Offload NETEX..............................................................................................................................4NESiGate Offload NETEX............................................................................ 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Bookmark not defined.NETEX and the ISO Model.............................................................................................................................4Session Layer Services ....................................................................................................................................6Transport Layer Services .................................................................................................................................6Network Layer Services...................................................................................................................................7Driver Sublayer Services .................................................................................................................................7Intertask Communication .................................................................................................................................8Session Layer Requests ...................................................................................................................................8General Concept of a Session ........................................................................................................................10Establishing a Session....................................................................................................................................12Data Transfer .................................................................................................................................................14Write/Read Data Transfer..........................................................................................................................14Concurrent Write and Read Data Transfer ................................................................................................15One-Way Data Transfer.............................................................................................................................17Page viii Contents MAN-REF-H307IP-04