Arista expands its portfolio with 25, 50, and 100-Gig data center switches

It seems 10 Gig Ethernet (Gig-E) technology has been the de facto standard in data centers for the better part of a decade now. Frankly, 10 Gig-E is still a lot of bandwidth and is fine for most businesses. However, it cannot cost-effectively meet the bandwidth requirements of next-generation cloud and web-scale environments. Sure, there's 40 Gig-E, but that's actually four 10 Gig-E "lanes" bonded together, so the cloud provider would likely have to install at least twice as many switches, along with all the cabling, space, power, and cooling required to meet the needs of today and the near future.

This is the primary driver behind the development of the 25 Gig-E standard. Compared to 10 Gig-E, 25 Gig-E provides 2.5-times the performance, making it much more cost-effective. Since the 25 Gigabits of bandwidth is provided in single lane, it provides much greater density and scale than 10 Gig-E. Also, deploying 25 Gig-E provides an easy upgrade path to 50 Gig-E (2 lanes) or even 100 Gig-E (4 lanes).

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