North American Network Operators Group

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Re: Cogent/Level 3 depeering

  • From: Joe Abley
  • Date: Wed Oct 05 16:21:36 2005

On 5-Oct-2005, at 15:22, Jeff Shultz wrote:

Interesting. Balkanization of the Internet anyone? As one other commenter hinted at, it does sound like a recipe for encouraging multi-homing, even at the lowest levels. How many ASN's can the system handle currently?
It's a 16-bit number; 0 isn't used, and the IANA (per RFC 1930) reserves 64512 through 65535 for private use. So from a resource allocation perspective, the answer is 64511.

There is a proposal to introduce 32-bit AS numbers. See, for example: survey-00.txt

We have talks scheduled for Los Angeles about AS number exhaustion.