I was given the opportunity to talk at PLNOG conference, beginning of March 2017. Considering the time constraints, I believe I was able to cover the SR-TE topic at least from high level point of view with some details underneath.
How a PCE based Controller pushes instructions down to a network device (PCEP), and how a network device shares the visibility of the IGP domain back to the controller via BGP Link State attribute (BGP-LS). This are some of the details covered by my speech at this conference.
For more details, have a look at the video below.