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Network 2402637 1280

The Infrastructure for Future Data Center Connectivity

100G, Next-Gen Data Centers, and a Role for Third-Party Optics

At the recent ECOC trade show and conference, much of the talk at the conference sessions was about the replacement of 100G by 200/400G transceivers. However, when one talked to end-users walking the show floor, a different story was to be heard. Most data center managers whose job it is to oversee the smooth functioning of medium-sized data centers are not yet concerned with 400G and may not be for several years. Instead, their focus is much more on transitioning from a 10G to 100G infrastructure or (to a limited but growing extent) from 10G to 25G infrastructure.

While technology is at the core of the 400G transition, this is not the case with the 100G evolution of data centers to 100G. The development of 100G for the data center began about 15 years ago and for the most part 100G should be regarded as a mature technology. This does not mean that the standards for 100G are over and done, but the standards making for 100G that is happening now is at the margins. For example, in the past couple of years the IEEE’s P802.3 which governs the standardization of Ethernet has concerned itself with adding some physical layer specs and management parameters for the full range of higher speed Ethernets including 100G. Work has also gone on a standard defining a 100G PHY defining 100G over a single wavelength on a DWDM and with a range of 80 km or more.

This sort of thing will matter more to a service provider contemplating next-generation metro networks than it will to the average data center manager. Chances are they are less concerned with technical niceties than with the requirements for upgrading their data center architectures.

Three Routes to Data Center Upgrades

As we see it, the network manager now has two scenarios for data centers in the near future:

Price and 100G

The bottom line is that over the next few years, what we are looking at is a wholesale deployment of many 100G and 25G transceivers. While such transceivers are not so expensive individually, in aggregate the transceiver bill is going to add up to a significant sum, making third-party sourcing of the necessary transceivers – sometimes a third the price of OEM branded transceivers – a very good deal.

In this context, one should remember that it is not just the transceivers that need to be swapped out. In many cases, older switches are not designed to support the new 25G/100G and must be replaced and even newer switches may not support enough 100G ports. So new switches and probably some re-wiring for 100G will have to be budgeted for to get the new infrastructure right. Even more reason to look at third-party sourcing for the new transceivers, which can save a lot on what is inevitably a big budget upgrade project.

Browse our transceivers catalog here.

On pricing for 25G and 100G solutions for your switch, contact our global sales team below.