ASNs and 1897 (was: Getting attached...)

[Bob Hinden]

Johan,

>> > Note that an RFC1897 format address includes the ASN (Autonomous System
>> > Number) of one's provider, not an ASN that belongs to one's own site.
>> > (Though a provider uses its own ASN.)
>
>This is completely incomprehensible. Why should I use the ASN of my
>`provider' if I have one of my own (which is typically not the case)?
>Also, more or less by definition, if I have an AS number, I have more
>than one `provider'.

The ASN of the provider was used because it would allow aggregation when
there were multiple sites connected to the same provider.  Also, as you
point out not many sites have their own ASN.  If a site has an ASN they
essentially become a provider so in that case use your own ASN.

Bob