Admit it, you thought I’d lost interest in software-defined networking (SDN), didn’t you?
But you know that couldn’t be true. I’m still interested in SDN and how it facilitates network virtualization, network programmability, and what the empire-building folks at EMC/VMware are billing as the software-defined data center, which obviously encompasses more than just networking.
Apparently I’m not the only one who retains an abiding interest in SDN. In the immediate wake of VMware’s headline-grabbing acquisition of network-virtualization startup Nicira Networks, entrepreneurs and venture capitalists want us to know that the game has just begun.
Last week, for example, we learned that PLUMgrid, a network-virtualization startup in the irritatingly opaque state of development known as stealth mode, has raised $10.7 million in first-round funding led by moneybags VCs U.S. Venture Partners (USVP) and Hummer Winblad Venture Partners. USVP’s Chris Rust and Hummer Winblad’s Lars Leckie have joined PLUMgrid’s board of directors. You can learn more about the individual board members and the company’s executive team, which includes former Cisco employees who were involved in the networking giant’s early dalliance with OpenFlow a few years ago, by perusing the biographies on the PLUMgrid website.
Looking for Clues
But don’t expect the website to provide a helpful description of the products and technologies that PLUMgrid is developing, apparently in consultation with prospective early customers. We’ll have to wait until the end of this year, or early next year, for PLUMgrid to disclose and discuss its products.
For now, what we get is a game of technology charades, in which PLUMgrid executives, including CEO Awais Nemat, drop hints about what the company might be doing and their media interlocutors then guess at what it all means. It’s amusing at times, but it’s not illuminating.
At SDNCentral, Matt Palmer surmises that PLUMgrid might be playing in “the service orchestration arena for both physical and virtual networks.” In an article written by Jim Duffy at Network World, we learn that PLUMgrid sees its technology as having applicability beyond the parameters of network virtualization. In the same article, PLUMgrid’s Nemat expresses reservations about OpenFlow. To wit:
“It is a great concept (of decoupling the control plane for the data plane) but it is a demonstration of a concept. Is OpenFlow the right architecture for that separation? That remains to be seen.”
More to Come
That observation is somewhat reminiscent of what Scott Schenker, Nicira co-founder and chief scientist and a professor in the Electrical Engineering and Computer Science Department at the University of California at Berkeley, had to say about OpenFlow last year. (Shenker also is a co-founder and officer of the Open Networking Foundation, a champion and leading proponent of OpenFlow.)
What we know for certain about PLUMgrid is that it is based in Sunnyvale, Calif., and plans to sell its network-virtualization software to businesses that manage physical, virtual, and cloud data centers. In a few months, perhaps before the end of the year, we’ll know more.