The Cidr Report - 4byte ASN handling

Joe Hamelin joe at
Sat Sep 17 05:11:30 UTC 2011

I say we all start using octal two's complement for extended ASNs.

(note to self: don't post to NANOG after a night out with a vendor.)

Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474

On Fri, Sep 16, 2011 at 9:39 PM, Mark Tinka <mtinka at>wrote:

> On Saturday, September 17, 2011 04:49:17 AM Tassos
> Chatzithomaoglou wrote:
> > btw, am i the only one who finds it easier to remember
> > asdot formatted ASNs?
> They're easier to remember, but if you operate an ASN for a
> reasonable period of time, it's okay to assume that you will
> remember it, whether it's as-plain or otherwise.
> The same would hold true for your favorite upstreams, peers,
> customers and role model ISP's :-).
> Cheers,
> Mark.

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