After over 40 years’ development, Ethernet has achieved the goals that its creator want to. Just like its name, Ether, Ethernet exists everywhere, becoming the ubiquitous media in the information society.
These years, with the rapid development of Internet, cloud computing and cloud data, the construction of IT infrastructure data center is promoted fast. In the Ethernet of data center, a new upgrading is also prepared, in which 25G Ethernet is very popular.
Let’s look at the changes on the ports of data center device first, as shown in the below pics:
For the needs of Ethernet, it’s mainly out of considerations for energy-saving and cost. Fields related to the development of data center, includes cloud and Leaf/Spine matrix type network structure. With the further improvement of server performance and the upgrading of data center from leaf-to-spine connection to 100Gbps, the upgrading of server from 10Gbps to 25Gbps/50Gbps is with more practical significance, Because 10G Ethernet usually can’t meet the needs, and the 100G is too expensive. While the birth of 25G and 50G Ethernet rightly makes up for the shortages of them. In addition, the channel tech of 25Gbps and 50Gbps will be the basis of 100Gbps(four 25Gbps) and 400Gbps(eight 50Gbps) Ethernet in the future. So companies in this field hope to use the transmission rate of 25G to replace 10Gbps’s
Introduction of 25GE Advantages On Tech
Compared with 40GE，25GE has strength in cost for its single channel. While 40G needs multi-channel due to its use of 10G tech. For 25G Ethernet, its essential advantages are that many parts have been developed earlier, because 100G is the combination of four 25Gbps. Therefore, their components can be produced volumely to lead to the falling of cost. By the SFP connector with 4 channels(QSFP), 100G can be divided into four 25Gbps, and 40G is also able to be divided into four 10G. So multi-speed Ethernet products are developed and applied.
Using same copper fiber cables with low cost can get quicker performance and higher base number. According to the rule, by using the single channel of exchanger/NIC SerDes, the bandwidth provided by 25G Ethernet link path is equal to 2.5 times of the one offered by the 10Gbps link path of 2 pairs of biax copper cables and FP+ DAC. By using two channels of exchangers/NIC SerDes operating at 25Gbps, 50G Ethernet link path can provide more 25% bandwidth than 40G. In addition, compared with the present QSFP+DAC cabling, only 4 biax copper cables are used according to the reference standards. When the speed rate of every channel is 25Gbps, the exchanger and NIC chips’ working speed will be quicker, and their power dissipation is relatively little higher. However, after the bandwidth is standardized, the advantages in cost and power dissipation will be more apparent.
Compared with 40GE, connection with TOR exchanger, 25GE can support higher server density in the rack.
For the density of ports, compared with the connection of present 10G and 40G Ethernet, 25G and 50G Ethernet link path, defined by 25G Ethernet Union, can make the performance of serializer/ SerDes ‘s channel and biax copper cables raised by 2.5 times, which can reduce over 50% of rack-level network cost about bandwidth per unit, obviously improving the profit and loss level of MSDC manufacturers. Besides, the performance of this standard can also broaden the network scale, usually called base number. Compared with 40G Ethernet server connecting to TOR, it can support higher density in the rack.
For the interconnection applications of 25G Ethernet in the data center, Infiberone can offers complete product line and different combined plan according to the actual scenes, which provides great convenience for the choice of plan. Product line is as below:
Infiberone Product No
Working Speed Rate
SFP28 Optical Module
Optic fiber 850nm
SFP28 Optical Module
Optic fiber 1310nm
Meanwhile, Infiberone self-developed 25G SFP28(AOC) checker offers faster and reliable test platform:
|25G SFP28(AOC) checker|
Since Standards about TOR exchanger was put forward by ODCC group, lead by BAT, last year, 25G has been the next goal of data center. It’s predicted that data center focusing on 25G will be deployed by Bat on a large scare ,after the Scorpio 3.0 Plan is pushed out in 2017. In addition, the needs of network products about data center will be raised quickly. The age of 25G is coming!
Infiberone is a sub-brand of Gigalight, we focus on high-end optical network devices, mainly supplying industrial-grade optical transceivers and professional optical interconnection components for data centers.With more than 10 years' experience in optics industry, we now have professional R&D team(more than 100 engineers) and stable supply ability.
We aim to create a highly reliable procurement platform for clients those value brands and quality. Every merchandise sold on Infiberone has 5-year quality warranty period, every order sent with free shipping and every item allowed to return in 30 days if there is quality issue.
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