On 2/10/2008, at 3:23 PM, Neil Fenemor wrote:

I hope this will make people bug their vendors more for getting 4 byte ASN support for their routing platforms. Now that there is a single user of a 4 byte ASN, there is no easy way to distinguish this from another 4 byte ASN user.

And don't forget to tell your favourite router vendors that AS-PLAIN notation is an operational requirement. Re-writing an ISP worth of regular expressions to handle a '.' in the middle of all the ASes in your filters is going to be a right pain. Expecially for someone like me who really isn't regexp programmer! For those not aware, the 4 byte integer 1234567 would be expressed as: AS-PLAIN (4 byte integer): 1234567 AS-DOT (2 byte . 2 byte): 18.54919 AS-SMILEY: 18:)54919 Straight integers are far easier to work with than the the AS-DOT or AS-SMILEY alternative data-structures! Cheers, Jonny.