Network utopia. ~Jay “Engineering is about finding the sweet spot between what's solvable and what isn't." “Good engineering demands that we understand what we’re doing and why, keep an open mind, and learn from experience.” Radia Perlman "If human beings are perceived as potentials rather than problems, as possessing strengths instead of weaknesses, as unlimited rather than dull and unresponsive, then they thrive and grow to their capabilities." Please consider the environment before printing e-mail -----Original Message----- From: rucasbrown@hushmail.com [mailto:rucasbrown@hushmail.com] Sent: Monday, June 06, 2011 4:20 PM To: nanog@nanog.org Subject: Why don't ISPs peer with everyone? Hello, I wouldn't consider myself a network engineer, nor do I have any formal training, but why don't ISPs peer with every other ISP? It would only save EVERYONE money if they did this, no? Only issue I see is with possibly hijacked / malicious AS owners, but that's not very common to do without being caught. All the whole "don't peer with this guy" only makes your customers have worse latencies and paths to other people, making the Internet less healthy. Thanks, Rucas PS: sorry if I sent this twice; client lagged a bit.