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ISO OSI (Open Systems Interconnection) Stack

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osi-stack

ISO/ITU-T/IETF OSI (Open Systems Interconnection) stack implementation with application protocols.

Status: Work in progress.

Currently featuring:

  • parts of CLNP over ...
  • Ethernet Subnetwork Service
  • via Ethernet2 header.
  • Ethernet SN:
    • PDUs implemented.
    • Functions working, but need to check conformance.
    • Primitives implemented (SN Unitdata request, SN Unitdata indication).
  • CLNP NS:
    • Most CLNP NS PDUs implemented (Data PDU, Echo Request, Echo Response).
    • Functions partly implemented
    • Primitives mostly implemented.
    • Echo Request and Echo Response handling and "ping" roundtrip
  • Simple static resolving of system-title based NSAP to SNPA address.
  • Simple OSI ping application

Working on:

  • Finishing CLNP primitives (N unitdata request and indication).
  • Finishing CLNP functions in detail.
  • Finishing SN functions.
  • CLNP options part detailed support.
  • CLNP non-segmenting subset and then
  • CLNP full protocol.

Goal:

  • Full coverage of the OSI protocols up to CASE (ACSE, RTSE, ROSE).
    • Maybe support for connection-oriented Data Link/Subnetwork Service and Connection-oriented Network Service.
  • Routing protocols ES-IS, IS-IS and IDRP.
  • LLC header support.
  • Option to use IP suite of protocols for carrying OSI PDUs
  • Carrying IPv4+IPv6 payload in routing protocols and in NLPID.
  • Management support.
  • Transport Layer Security, Network Layer Security.
  • Application-layer protocols FTAM, VT, ...
  • X.400
  • X.500
  • X.509 (note, consider https://en.wikipedia.org/wiki/X.509#Security)
  • X.400 EDI
  • X.601
  • X.605
  • X.609
  • and others in X-Series
  • Linux kernel module for layer 2,3,4
  • multi-platform support (Linux, Mac, Windows)

Related:

  • SS7 support (built on OSI)
  • ATN support (built on OSI, transitioning from OSI as base to IP in newer airplanes)
  • OPC UA (running via TCP, but may run via TP4 as well)
  • energy exchange protocols

Written in Rust, with planned binding for C and further, more programming languages.

License

GNU LGPLv3+

Contributing

  1. open an issue or pick an existing one
  2. discuss your idea
  3. send pull request
  4. quality check
  5. merged!