Internet Captivity and De-Peering Menace

Source Brown/Renesys

Have you seen this one ? :-D ... No? Then, you should go to the newest NANOG movies! It's interresting and somehow a bit funny!

As you might already guessed, the Renesys guys addressed some de-peering cases esp. the latest one between Sprint and (as usual) Cogent. But I won't tamper with that issue. Just a minor thing : they used the term DFZ (Default-Free Zone) replacing the usual "Tier-1" term. I'm not sure whether they indeed introduced that term or maybe they just used it because somebody previously has introduced that ?! somebody knows?



The DFZ according to Renesys:

• AS174 Cogent
• AS209 Qwest
• AS293* Energy Sciences Network
• AS701 Verizon
• AS1239 Sprint
• AS1299 Telia
• AS2828 XO
• AS2914 NTT
• AS3356 Level 3
• AS3549 Global Crossing
• AS6453 Teleglobe
• AS6461 Abovenet
• AS7018 AT&T

Who is XO, Abovenet and ESN ??