fc-frame · shipping · also FC frame

Fibre Channel frame

A Fibre Channel frame is an FC-2 transfer unit delimited by SOF and EOF, with a header, variable data field and CRC.

Related Observatory article: Fibre Channel frame on hesela.com

The data field includes optional headers, so its 2112-octet architectural maximum is not guaranteed application capacity; login can negotiate less. [1]

Linux v6.12 defines a 24-byte header and FC_MAX_FRAME as 2136 bytes, excluding CRC and delimiters. [2] RFC 3643 includes the CRC in frame content and gives a separate delimiter representation for IP encapsulation. Do not treat that representation as a native-link wire-size formula. [3]

Relations

related
Fibre Channel, Fibre Channel sequence, Fibre Channel exchange, Buffer-to-buffer credit, Cyclic redundancy check

Citations

  1. RFC 4338 (January 2006), sections 2.1-2.4: Fibre Channel architecture summary (accessed 2026-10-19)
  2. Linux v6.12: fc_fs.h frame layout, identifiers and protocol types (accessed 2026-10-19)
  3. RFC 3643 (December 2003), section 5: frame content and delimiter representation (accessed 2026-10-19)
Sources & caveats
  • Source-backed protocol definition; no throughput, failure-rate or durability measurement is implied.

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Cite this page
Hesela team. Fibre Channel frame. Hesela. 2026-10-19. https://hesela.dev/terms/fc-frame/