Google has revealed the results of their work to re-architect their internal network infrastructure around OpenFlow.
Google’s network, which is described as equivalent to “the second largest ISP in the world,” consists of a user-facing network and a second network that interconnects its worldwide data centers.
OpenFlow is a key part of the Software Defined Networking (SDN) approach that separates network equipment from the overall management. The result is the capability to manage the network fabric as a whole and dramatically increase its efficiency.
Moreover, Google which began working on an OpenFlow network in 2010 has actually been designing and building its own network gear as it was not yet available.
The result is a network that operates at almost 100 percent utilization, rather than the 30-40 percent of other networks.
Google is revealing their OpenFlow work with hopes that equipment vendors will begin manufacturing gear that supports it. Google is a member of the Open Networking Foundation, which promotes OpenFlow. Other members include Yahoo, Microsoft, Facebook, Verizon and Deutsche Telekom, and Nicira.
Software Defined Networking as represented by OpenFlow is a fundamental change in thinking of complex digital networks that promises to remake the entire network industry, impact how companies and governments manage their networks, and enable new kinds of network applications.
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