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Stories by Jim Duffy

SDN company helps build clouds

Contextream, a developer of network <a href="http://www.networkworld.com/news/2010/102510-burning-questions-virtualization-storage.html">virtualization</a> software for <a href="http://www.networkworld.com/supp/2009/ndc3/051809-cloud-faq.html">cloud computing</a>, this week announced the availability of Contextream Grid for cloud and managed hosting providers.

Written by Jim Duffy14 Dec. 11 09:29

New Cisco cloud computing framework pushes management, collaboration

<a href="http://www.networkworld.com/community/blog/1860">Cisco</a> this week unveiled products and packaging options for customers looking to implement public, private and hybrid <a href="http://www.networkworld.com/supp/2009/ndc3/051809-cloud-faq.html">cloud computing</a>.

Written by Jim Duffy07 Dec. 11 04:29

OpenFlow not the only path to network revolution

APIs and messaging protocols, including some that are standards, can let users build software-defined networks today. The key issue, though, is that not everyone implements the same ones or implements them the same way. Will OpenFlow get us all on the same path to SDN nirvana?

Written by Jim Duffy18 Nov. 11 03:28

6 ways to build SDNs without OpenFlow

Although OpenFlow is stirring up all of the excitement around <a href="http://www.networkworld.com/news/2011/101911-openflow-summit-252150.html">software defined networking (SDN)</a>, you can program a network with standard tools that have been around a while. Here are a few examples.

Written by Jim Duffy18 Nov. 11 03:27

Medical research group skips 40G, makes 'right move' to 100G Ethernet

Howard Hughes Medical Institute (HHMI), a nonprofit medical research organization, has implemented a <a href="http://www.networkworld.com/news/2009/111909-100g-ethernet-cheatsheet.html">100G Ethernet network</a> to boost bandwidth for advanced data analysis.

Written by Jim Duffy16 Nov. 11 06:33

Arista again looks to buck Cisco, others in data center

Arista Networks this week has rolled out four switches and enhanced software designed to address the scalability, resilience and density requirements of <a href="http://www.networkworld.com/supp/2009/ndc3/051809-cloud-faq.html">cloud computing</a>.

Written by Jim Duffy16 Nov. 11 01:48

Juniper at the root of Internet outage?

Juniper routers are reportedly behind an Internet outage that affected service providers and Web sites around the globe Monday morning.

Written by Jim Duffy08 Nov. 11 08:54

Harris Corp. sees opportunity, challenges in the cloud

With all the <a href="http://www.networkworld.com/topics/security.html">security</a> challenges encompassed in <a href="http://www.networkworld.com/news/2011/102611-insider-cloud-security-252410.html">cloud services</a>, one company is working to ensure that its users and other customers can rely on it for <a href="http://www.networkworld.com/news/2011/103111-networking-cloud-252362.html">business critical computing</a>.

Written by Jim Duffy03 Nov. 11 21:32

OpenFlow vs. programmable ASICs

Can you program a network of multivendor switches and routers, all running different operating systems, command line interfaces and configuration routines, to work in concert when it comes to managing flows?

Written by Jim Duffy02 Nov. 11 21:34

Juniper adds OpenFlow to its routers, switches

Juniper Networks this week said it is making the source code of its OpenFlow application accessible to developers of applications for its Junos networking operating system software.

Written by Jim Duffy26 Oct. 11 23:33

What's OpenFlow's killer app?

PALO ALTO, Calif. -- As most participants at the inaugural <a href="http://www.networkworld.com/news/2011/082611-stanfords-open-networking-summit-to-250169.html">Open Networking Summit</a> extolled the virtues of software-defined networking (SDN) and the <a href="http://www.networkworld.com/news/2011/041411-open-flow.html">OpenFlow protocol</a>, others are waiting for key features to emerge before considering it for their networks.

Written by Jim Duffy21 Oct. 11 01:35