scope:

This standard describes the physical interface portions of high performance electrical and optical link variants that support the higher level Fibre Channel protocols including FC-FS-4 (reference [22]).

FC-PI-6P includes the parallel four-lane variants 128GFC-SW4 and 128GFC-PSM4 and the CWDM four-wavelength variant 128GFC-CWMD4. Older technologies include the 32GFC variant described in FC-PI-6 (reference [1]); the 16GFC variant described in FC-PI-5 (reference [2]); and the 8GFC, 4GFC, 2GFC and 1GFC variants listed in FC-PI-4 (reference [3]) and FC-PI-2 (reference [4]).