FICON

FICON (Fibre Connection) is the IBM proprietary name for the ANSI FC-SB-3 Single-Byte Command Code Sets-3 Mapping Protocol for Fibre Channel (FC) protocol. It is a FC layer 4 protocol used to map both IBM's antecedent (either ESCON or parallel Bus and Tag) channel-to-control-unit cabling infrastructure and protocol onto standard FC services and infrastructure. The topology is fabric utilizing FC switches or directors. Valid rates include 1, 2, 4, 8, 16, and 32 Gigabit per second data rates at distances up to 100 km.

This article is about Fiber Connectivity in computing. For the USAF Fighter Conveyor project with B-36 and F-84, see FICON project.
Fibre Channel
Layer 4. Protocol mapping
LUN masking
Layer 3. Common services
Layer 2. Network
Fibre Channel fabric
Fibre Channel zoning
Registered state change notification
Layer 1. Data link
Fibre Channel 8b/10b encoding
Layer 0. Physical

FICON was introduced in 1998 as part of System/390 G5 IBM mainframe.In July 2013, FICON replaced ESCON in new zEnterprise BC12/EC12, and later models, because of FICON's technical superiority (especially its higher performance) and lower cost.

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