IPv4 and ASN Policy draft on-line

On Mon, 24 Sep 2001, Randy Bush wrote:

> > I'll try to explain what I am getting at.Very often a newbie ISP doesn't
> > quite understand what this is all about.They get an ASN cuz everyone
> > else has one.Their upstream does static routing to them so rather than
> > having their /19 show upas AS34567, it shows up as origin=AS11111 (their
> > upstream).
> >
> > If I go the Oregon router server and look up their /19 and find only 1
> > path to that /19 or I find that the ASN origin has disappeared and been
> > replaced by their upstream then there is no justification for getting an
> > ASN.
> 
> understood the motivation.did not understand the mechanism.
> 
> in arin-land, i think they actually ask to see proof of dual-homing before
> issuing the asn.but you want to TEST that it is actually deployed.what
> is not clear to me is HOW to do that.please take into account the problem
> of bgp best-path-only propagation.

I do the same in RIPEland as well.  BGP best-path-only does put a crimp in
the works which is why one needs to check a few public route servers.  I
cycle thru all multihomers (that I have allocated) every few months and
check 3-4 large route servers or LGs and see who doesn't show up at all
(went bellyup) or has only 1 path (dropped the 2nd due to economic
downturn).

> 
> randy
> 

Hank Nussbacher