ISO/IEC 9314-25:1998 PDF

Overview

ISO/IEC 9314-25:1998 - "Information technology - Fibre Distributed Data Interface (FDDI) - Part 25: Abstract Test Suite for FDDI - Station Management conformance testing (FDDI‑SMT‑ATS)" - defines the Abstract Test Suite (ATS) for conformance testing of the FDDI Station Management (SMT) protocol. The ATS provides standardized test procedures and test cases that support the FDDI Protocol Implementation Conformance Statement (PICS) Proforma and PIXIT data for interoperability and compliance verification. (Note: this publication is distributed on CD‑ROM.)

Key topics and technical requirements

• Scope of coverage
  • Tests for SMT functional areas: Physical Connection Management (PCM) and Entity Coordination Management (ECM) (combined), Ring Management (RMT), Frame Based Management (FBM), Configuration/Connection Management (CFM/CMT) and Management Information Base (MIB).
  • Interaction and test coordination with lower layers: PMD, PHY, and MAC.
• Test language and methodology
  • Uses ISO/IEC 9646 conformance testing framework.
  • TTCN (Tree and Tabular Combined Notation) is used for RMT, FBM and MIB test cases.
  • A variant TTCN(P) is used where line‑state semantics are required (PCM, CFM).
• Test suite contents
  • Abstract test cases, dynamic behavior tables, tester configurations, and PIXIT proformas to populate PICS/PIXIT.
  • Timer and parameter definitions required for test execution (examples in the ATS include D_Max default 1773 μs and a Topr operator time default of 3 minutes).
• Conformance focus
  • Verifies station management functions such as station insertion/removal, initialization, configuration management, fault recovery, scheduling policies, statistics collection and external authority communication.

Practical applications and users

• Test laboratories performing formal FDDI conformance and interoperability testing.
• Network equipment vendors developing FDDI station firmware or hardware (SMT, MAC, PHY, PMD layers) who need to validate protocol compliance.
• QA and integration teams ensuring multi‑vendor ring behavior, ring recovery and management features meet standards.
• Standards bodies and certification organizations implementing PICS/PIXIT based test campaigns.

Related standards

• ISO/IEC 9314 series (FDDI): PHY (Part 1/3), MAC (Part 2), PMD (Part 3) and SMT (Part 6).
• ISO/IEC 9646 (Conformance testing methodology and ATS/TTCN).
• ISO/IEC 7498‑1 (OSI Basic Reference Model).

ISO/IEC 9314‑25:1998 is essential for anyone involved in formal conformance testing or interoperability assurance of FDDI station management functions, providing a structured ATS and test artifacts aligned with PICS/PIXIT and ISO testing practices.