About Dave Jameson

With more than 20 years of experience working in telecom, mostly with network management solutions, Dave has accumulated a wide range of experience making networks run like Swiss watches. He’s even run a NOC for a LEC in the past, deploying and delivering state-of-the-art data services. He’s applied his talents to the Fujitsu NETSMART 1500 network management system for the past fifteen years. Currently he’s devoting his attention to SDN/NFV in a network operations and management context. Perhaps owing to his NOC days, Dave appreciates a good cup of coffee—to the point where he roasts his own blends and maintains a lively blog about all things dark and caffeinated.

Real-World SDN: Anything Less than Multivendor Won’t Cut It

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Vendors seeking to set “ground rules” for critical aspects of Software-Defined Networking (SDN), such as what “multilayer” approaches mean, are leaving gaping holes in their strategy if they don’t account for multivendor interoperability. A diverse vendor ecosystem is one of the things that makes an open standards paradigm so powerful.

The importance of multilayer networking is beyond dispute, regardless of what the “routers can do everything” lobby might have to say. In fact, the idea that entire networks can be based on router architectures amounts to a case in point for the multilayer view. Trying to build an end-to-end router-based network would impose tremendous cost and complexity burdens. The cheaper, more efficient, long-range optical transport layer is essential to economical networks, alongside routers. It’s a question of using the most efficient means to carry traffic, not taking a one-size-fits-all approach.

In a similar vein, multilayer approaches seem to be coalescing along single-vendor lines, or at least to be offering limited multivendor interoperability. Even those claiming to be closest to rolling out a multilayer SDN offering seem to imagine that service providers will buy all their equipment from them. When the chips are down, multilayer approaches based on alliances between vendors to make up for each other’s deficiencies amount to turf-protection efforts that don’t take account of the diversity at all layers of the network. In reality, a truly open and interoperable multivendor approach ranks alongside multilayer networking in importance. Yet we hear very little about the multivendor aspect save for the claims of one or two vendors of glorified network management systems thinly disguised as SDN offerings.

Any single-vendor or vendor-limited solution is useless in the real world where SDN will be deployed. Moreover, protecting old OSS turf prevents interoperable solutions from flourishing and produces some “strange bedfellows.” A realistic and pragmatic approach to SDN must recognize the true conditions into which SDN will be deployed. In a fragmented optical market and an economic climate where service providers seek to maximize the long term viability of their capital investments, SDN must be as interoperable as possible if it is to deliver on its value promises.

As the provider of one of the first multivendor SDN solutions deployed in the world, Fujitsu has valuable expertise and perspective on this topic and is uniquely positioned to address connecting data centers to transport networks using multilayer and multivendor systems. We already build servers and resource orchestrators, and are currently among the world’s largest providers of hosted cloud services. Look for more announcements from Fujitsu on their fast-developing SDN technology portfolio over the coming months.