[c-nsp] Private ASN

[Justin M. Streiner]

On Fri, 1 Jun 2007, Raman Sud wrote:

> Is there a way to setup BGP with a customer using a private ASN and
> still be able to route that IP block over the internet?
>
> I am removing private ASN from leaving our network but I have not tested
> the implementation where traffic originating from Private AS can pass
> pass thru to the internet.

You can do this, as long as the customer gets their IP connectivity only
through your network.  Once they decide to multi-home to two or more 
different upstreams, they need to apply for a public AS number through 
whichever RIR serves their geographic area (ARIN, RIPE, APNIC, LACNIC, 
etc...).

Also, if the routes this customer announces are from your IP address 
space, the aggregates you announce to your upstreams will cover them too. 
If they have other routes, you will have to originate those announcements 
to get them into the global Internet routing table.

jms