Text this: Centralized control system in interdomain routing environments

 __   _     _____     ______   __   __   _    _   
| || | ||  |  ___||  /_   _//  \ \\/ // | \  / || 
| '--' ||  | ||__    `-| |,-    \ ` //  |  \/  || 
| .--. ||  | ||__      | ||      | ||   | .  . || 
|_|| |_||  |_____||    |_||      |_||   |_|\/|_|| 
`-`  `-`   `-----`     `-`'      `-`'   `-`  `-`