Pressure to post my findings before you do........
Post# of 17650
I was enjoying my find saved it kept looking and Baaaam you posted it already.
AT&T has been able to rapidly expand its Network on Demand service, today announcing 100 new cities where it's available, based on widespread deployment of an SDN-based control layer and creation of APIs to link its existing operations and business support systems to its web-based customer interface. The rapid expansion of the new capability, which lets customers see their Switched Ethernet network topology and easily order, manage and change services, is an example of what SDN can enable. (See AT&T Expands Network on Demand to 100 Cities.)
The technology transition has been in the making for years but was first made public last fall when the Network on Demand service was launched in Austin, Texas, over AT&T Inc. (NYSE: T)'s fiber footprint there. In future, expansion will be based on extending the reach of AT&T's fiber optic access network and that will be driven by business demand, says Josh Goodell, VP-Network on Demand. (See AT&T Brings User-Defined Network to Austin Businesses, AT&T Reveals Audacious SDN Plans and AT&T Spotlights Early SDN Efforts.)
"When we went from one city to six, in February, we could have gone to 100, but we felt it would be good to learn incrementally, and not just about what technical wrinkles may occur," Goodell tells Light Reading in an interview. "We also had to develop the fundamentals of communicating and channel engagement and speaking externally about this. All of these are things we are thinking about. The control layer has been in place -- we are now at a point that we can expand it across our 21-state footprint."
The hardest part of the process was developing more than 200 applications programming interfaces that went northbound to the web interface used by customers to order, manage and change their Switched Ethernet services, and southbound to the AT&T network, he admits. Because of AT&T's extensive legacy network, the carrier faced complications that a green-field deployment of SDN would not have faced.
"One of the things that is unique is that we are doing this at a scale that has never been done before," Goodell says. "There are surprises every day -- that's part of the blessing of being on the bleeding edge of something that is this significant. There have been a lot of issues but that's part of the challenge and one of the things I love, that we are doing all of this on top of an existing network."
The guiding principle of the process has been to keep things simple for the customer, to hide the complexity of legacy systems and focus on extracting what customers need, and to keeping the look and feel of the existing AT&T Switched Ethernet service for the customers, Goodell says. "We have been very methodical about that, as we have layered on additional functionality
http://www.lightreading.com/carrier-sdn/sdn-a...-id/714900?