Stories by Jim Metzler

  • SDN and Network Virtualization: A Reality Check

    The Software Defined Networking movement is still evolving, but profiles of SDN users are becoming more clear and we're getting a bead on some of the common evaluation criteria companies are using to gauge how to go forward. We also have a sense of when companies expect to start the process in earnest.

  • Planning for SDN

    Software-defined networking (SDN) is the hottest thing going today, but there is considerable confusion surrounding everything from the definition of the term to the different architectures and technologies suppliers are putting forward.

  • Complete guide to network virtualization

    There are a number of emerging and proposed standard protocols focused on optimizing the support that data center Ethernet LANs provide for server virtualization. Several of these protocols are aimed at network virtualization via the creation of multiple virtual Ethernet networks that can share a common physical infrastructure in a manner that is somewhat analogous to multiple virtual machines sharing a common physical server.

  • Tech explainer: Software Defined Networking (SDNs)

    As is somewhat typical of emerging technologies, there isn't a universally agreed to definition of what is meant by software defined networking (SDN). Over the last year or two most of the definitions have focused on the decoupling of the network control plane from the network forwarding plane.

  • Are you ready for networking in the cloud?

    The two primary forms of public cloud computing, Infrastructure-as-a-Service (IaaS) and Software-as-a-Service (SaaS), are both growing dramatically in popularity. Over the last few years, the primary focus of the IaaS providers has been on offering the basic compute and storage resources required to run applications.

  • Kevin Mitnick seeks refuge from hackers

    Kevin Mitnick, the ex-hacker turned security consultant, is such a high-profile target himself that the Web-hosting firm he was using finally told him it wouldn't host Web pages for him anymore.