SDN is object oriented programming brought to telco networks. Adtran showed an impressive but still early version at their press event. Named Mosaic, it is already managing G.fast at trials in 65 telcos. The 40 gig NG-PON2 units Verizon is testing also run under Mosaic. From a single console controlling more than a dozen pieces of equipment, Adtran showed they can run "Configure, Deploy and Activate" on any of the boxes, not all of which are made by Adtran.
Their Huntsville SDN demo was along a long wall. To the left of the picture was an 8086 type of Linux PC, about $5,000 worth, running ONOS and Adtran's Mosaic software suite. Underneath it were off the shelf boxes, 48x10G switches, 32x100G switches, and 16x10G PON OLTs. To the right of the monitor was an Adtran box running SHDSL; a 16 port G.fast box, 2 x 10 gig OLTs, 2 G.fast CPE, a carrier Ethernet unit, and gateways connected to the 10 gig PON. The switches were leaf and spine, from an obscure vendor in a white box.
The controller could have been a thousand miles away in the cloud.