Owing to the development trend of high-speed Ethernet

10 G Ethernet is hard to meet the request of big data. The essay will analysis and compare 40 G、100 G、25 G and 50 G Ethernet in four aspect: system architecture

advantage and disadvantage

cost and future progress. Then we summary the tendency of high-speed Ethernet technology’s evolution with some feature like higher port density and lower deployment costs

single channel 25 G and 50 G Ethernet will be the key of Ethernet’s evolution. Multichannel can meet users’ demand by multiplexing the data using the same high-speed single channel.