GBIC (abbreviation for Gigabit Interface Converter) is an interface device that converts gigabit electrical signals into optical signals. GBIC design can be hot swap. GBIC is an international standard interchangeable products. Gigabit switches designed with GBIC interface, due to interchangeability, occupy a larger market share in the market.
GBIC module is divided into two categories: First, the ordinary cascade GBIC module used to achieve common connections with other switches; the second is a dedicated stack of GBIC modules to achieve redundant connections with other switches.
GBIC is basically replaced by SFP for the following reasons:
SFP (Small Form-factor Pluggables) can be simply understood as an upgraded version of GBIC.
SFP modules (half the size of a GBIC module and more than double the number of ports on the same panel.
Because the SFP module is basically the same as the GBIC in terms of functions, it is also known by some switch manufacturers as miniature GBIC (Mini-GBIC).
SFP modules further reduce the size and power consumption by placing CDRs and electrical dispersion compensation out of the module. Optical communication applications used in telecommunications and data communications. SFP to connect network devices such as switches, routers and other equipment motherboard and optical fiber or UTP cable. SFP is an industry standard supported by some fiber optic device providers.
SFP supports SONET, Gigabit Ethernet, Fiber Channel and some other communications standards. This standard extends to SFP + and supports 10.0 Gbit / s transfer rates, including 8 gigabit Fiber Channel and 10GbE. Introducing SFP + module versions in both fiber and copper versions, SFP + modules leave some of the circuitry on the board rather than in modules, as compared to the Xenpak, X2 or XFP versions of the modules