The Internet backbone consists of just over 6000 independent networks that exchange traffic in fashions that are not well understood outside of the backbone networking community. We explain how it works, how it has evolved and how it is continuing to evolve today.
This is a revised and annotated version of material most recently given as an invited presentation at OFC 2014, the optical fiber conference in San Francisco, in March 2014.
To provide higher resolution, I've also uploaded a version w/o annotations, i.e. just the graphics.