Independent space from ARIN

Sat Apr 12 23:59:55 UTC 2003

> On Sat, 12 Apr 2003, Steve Gibbard wrote:
> > There aren't really technical issues with this beyond what you'd have to
> > deal with with normal IP space.  If you're running BGP, you'll have to
> > announce the space and get filters updated to allow it, but you have to do
> > that with a block of IP space you get from a provider anyway.
> 
> Has anyone run into problems with routing though? If you get space from a 
> tier1, presumably they have agreements with those they peer with to aceept 
> traffic from those netblocks.
> 
> I'm concerned with independent space, that some providers may refuse to 
> route/accept the traffic. Has anyone run into issues there?

As long as you always advertise your largest aggregate, you are likely
to be fine. You may need to (based upon your topology) advertise longer
prefixes (hopefully tagged no-export) to those with whom you have a direct
business relationship with, in order to address the requirements your
topology imposes.

The problem comes in when you do not advertise your largest aggregate.
In such cases, you may find yourself filtered or dampened away.

As I often explain to folks, by not advertising your largest aggregate
you are self-limiting your reachability.