Overview
ISO/IEC 11570:1992 is an international standard that defines a transport protocol identification mechanism within the context of Open Systems Interconnection (OSI). Published by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), this standard facilitates seamless telecommunications and information exchange between systems. It addresses interoperability by enabling the coexistence of both OSI and non-OSI transport protocols above the OSI network layer, ensuring flexible and efficient data communications across heterogeneous environments.
This standard is essential for organizations that require robust network interconnection and system interoperability, as it outlines procedures for identifying transport protocols during network connection establishment. By adhering to ISO/IEC 11570, implementers can support evolving networking requirements while maintaining compliance with international best practices.
Key Topics
- Transport Protocol Identification: Specifies how initiating entities indicate the desired transport protocol to accepting entities on a network connection, enabling protocol negotiation and selection.
- Support for Multiple Protocols: Provides mechanisms for a single transport entity to support both OSI and non-OSI protocols, enhancing system flexibility and connectivity.
- Procedures for Default and Explicit Identification: Details how default identification (no protocol explicitly specified, defaulting to ISO/IEC 8073) and explicit identification (using protocol identifiers) are handled within network service primitives.
- Use of Network Service: Relies on the OSI network layer for exchanging protocol identification information, leveraging network service parameters for effective communication.
- Conformance Requirements: Defines conditions for systems to claim compliance, ensuring interoperability, and reliable protocol identification during connection establishment.
- Extensibility: Reserves protocol identifier values for future expansion and private use, allowing the standard to accommodate evolving networking technologies.
Applications
Organizations deploying OSI-based networks or requiring integration with non-OSI transport protocols benefit significantly from ISO/IEC 11570:1992. Practical applications include:
- Enterprise Networks: Ensures compatibility and seamless data exchange in environments utilizing mixed protocol stacks.
- Telecommunications Infrastructure: Facilitates interoperability between diverse network equipment, supporting both standard and proprietary protocols.
- Network Gateway Implementation: Simplifies the design of gateways and bridges that must recognize and support multiple transport protocols above the OSI network layer.
- Custom Protocol Deployment: Offers a standardized method for identifying proprietary or emerging transport protocols when establishing connections.
- Public Data Networks: Supports efficient protocol negotiation in wide-area networking scenarios, such as those involving CCITT X.25 or similar network services.
By implementing this standard, organizations can future-proof their network infrastructure and support various application-layer protocols, optimizing both flexibility and investment protection.
Related Standards
ISO/IEC 11570:1992 is closely related to several foundational standards in OSI networking and protocol management:
- ISO 7498: Information processing systems - OSI Basic Reference Model (foundation for OSI architecture)
- ISO/IEC 8073: OSI Connection-mode Transport Protocol
- ISO 8602: OSI Connectionless-mode Transport Protocol
- ISO/IEC 10736: Transport Layer Security Protocol
- ISO/IEC 8348: Network Service Definition
- ISO 7498-3: OSI Reference Model - Naming and Addressing
- CCITT X.25 / X.244: Public data network protocols for packet-mode communication and protocol identification during virtual call establishment
These related standards provide essential context and interoperability guidelines for implementing transport protocol identification mechanisms as specified in ISO/IEC 11570:1992.
Keywords: ISO/IEC 11570, OSI transport protocol, protocol identification, telecommunications, network interconnection, data communications, ISO standard, OSI model, interoperability, transport layer.