I used the patent-pending method of "Throw indecipherable mess at wall and see what sticks." Besides, the moment I heard the words "BGP" I thought Cisco, and "MED" somehow ringed a very faint bell in my mind back when I took Cisco Boot Camp a couple years ago.
Hell if I even remembered what a MED was until I read the Cisco KB article.
EDIT: I can't even remember what it stands for anymore.
