Overview
ISO/IEC 14165-141:2001 - Fibre Channel Part 141 (FC-FG) defines the Fabric Generic Requirements for Fibre Channel Fabrics. It specifies the generic, topology-independent requirements for a switched communications transport called the Fabric, which provides switched interconnect between pairs of user attachment points. FC-FG complements the physical and signaling details in ISO/IEC 14165-111 (FC-PH) by describing the Fabric’s expected behaviours, services, addressing and configuration controls.
Key topics and requirements
- Fabric concepts and elements: definitions for Fabric, sub-Fabrics, regions, translators, zones and Fabric_Ports.
- Topology independence: requirements that apply across switch, distributed element and other topologies.
- Fabric addressing and partitioning: address identifiers, well-known addresses, Alias_IDs and address space partitioning (see Annex A).
- Service classes: specification-level coverage of Class 1 (dedicated), Class 2 (multiplex), Class 3 (datagram), Class 4 (fractional/virtual connections) and Class F (Fabric signaling) services and behaviors.
- Fabric entity and port requirements: frame validity checking, connection independence, non-duplication of frames, enforcement of timing/outage parameters (E_D_TOV, R_A_TOV), Class 1 bandwidth and jitter expectations.
- Fabric services and servers: roles and requirements for Fabric Controller, Login Server, Directory/Management/Time servers, Alias Server and Quality of Service Facilitator.
- Initialization & configuration control: power-on/link initialization, link attachment, addressing/configuration determination, F_Port activation and N_Port login with the Fabric.
- Fabric inter-operation: interoperability expectations when Fabrics interconnect or when configuration changes occur.
Applications and who uses this standard
ISO/IEC 14165-141 (FC-FG) is intended for:
- Storage and network architects designing Fibre Channel Fabrics and SAN topologies.
- Switch and storage array vendors implementing Fabric behaviors, Fabric_Ports and login/management servers.
- Firmware and device developers ensuring compliance with Fabric services and class-specific requirements.
- Test labs and integrators validating interoperability, addressing, QoS and Fabric initialization behavior.
- Standards implementers aligning products with the FC family for multi-vendor interoperability.
FC-FG is particularly relevant when building reliable, switched Fibre Channel networks that carry upper-level protocols such as SCSI, IP and HIPPI over the Fibre Channel stack.
Related standards
- ISO/IEC 14165-111 (FC-PH) - Physical and Signaling Interface (companion document describing physical links and signaling used by Fabrics).
- Other parts of ISO/IEC 14165 cover switch fabric requirements (FC-SW), arbitrated loop (FC-AL), mappings to upper-level protocols and generic services.
Keywords: ISO/IEC 14165-141, FC-FG, Fibre Channel Fabric, Fabric Generic Requirements, Fabric topology, Fabric_Port, Fabric addressing, Fabric Controller, FC-PH.