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Why We Need Network Abstraction
November 26, 2012
Highly virtualized data centers are exposing cracks in traditional network constructs such as VLANs. New approaches that abstract the physical network, including network overlays, are key to providing flexibility and scale.SDN Is Business, OpenFlow Is Technology
November 15, 2012
Software-defined networking (SDN) and OpenFlow aren’t the same thing. We’ll clarify the technical differences and discuss a more important distinction: SDN emphasizes applications that drive network usability and business requirements, while OpenFlow is a technology to link an SDN controller and network devices.Extreme Networks' 40 GbE, 100 GbE Switch Modules Target Data Centers
November 15, 2012
Extreme also opens up its OS to support OpenFlow 1.0 and OpenStack to enable more flexible network architectures.Packets Are the Past, Flows Are the Future
November 14, 2012
Networking has focused for years on speeds and feeds: how many packets you can handle and how many ports per device. But hosts and applications work with flows, which will force the network to adapt. Here’s why.Big Switch's OpenFlow Controller Guns for SDN Leadership
November 13, 2012
Big Switch Networks, an ambitious start up in software-defined networking (SDN), has launched a new controller and a pair of networking applications that have the potential to drive OpenFlow-based networks into the mainstream.VMware Does Complicated Dance With Open Source
November 09, 2012
When it comes to thinking about the future data center, it's well understood that servers and storage will function as pools of virtualized resources that can automatically switch from task to task. Networking is a much harder nut to crack. It remains unvirtualized and has lagged far behind the other two. But without it, we'll never get to the flexible, automated data center of the future envisioned as a "private cloud." That's why I sat down to talk to Martin Casado, the former Stanford grad student whose PhD thesis turned into the OpenFlow networking protocol. Casado co-founded virtual networking firm Nicira, which soon became the lead contributor to OpenStack's virtual networking project, Quantum. VMware bought Nicira for $1.26 billion in July -- not bad for a young company with 100 employees. I'd asked Casado to explain how Nicira was going to continue to lead development of virtual networking in OpenStack, since open source OpenStack competes directly with VMware to manage the virtualized part of the data center that's implementing automated self provisioning, elastic expansion and chargeback -- the private cloud part.SDN Startup Midokura Takes on IT Giants
October 18, 2012
Midokura this week announced its MidoNet software, which promises to virtualize networks to enable infrastructure as a service.Mellanox Makes SDN Move with New Switches
October 16, 2012
SwitchX-2 supports OpenFlow and leverages Mellanox’s Virtual Protocol Interconnect technology for simultaneous InfiniBand and Ethernet connections.Apigee, Layer 7 Simplify API Development
October 15, 2012
API management firms give developers access to services that may bring in new customers or dynamically configure software-defined networks.SDN's Potential in the Data Center and on the WAN
October 12, 2012
Software-defined networking has the potential to reshape networks. This primer presents a brief overview of SDN and outlines potential use cases.
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Best of the Web
VXLAN termination on physical devices
VXLAN is an Experimental IETF draft of protocols to enable the creation of a large overlay, multi-tenant network.
ONF Deadly Serious About OpenFlow-Based SDNs
: OpenFlow is poised to reach over-hyped status, yet there are practical, useful reasons for keeping an eye on Openflow. The biggest cloud players are involved and driving the feature creation.
Practical Introduction to Applied OpenFlow
Get a primer on the Openflow protocol and what it can do for networking.
On Resilience of Spit-Architecture Networks
This research papers investigates the practical issues in split-architecture networks and the placement of the controllers, such as Openflow controllers, in the network.
