[ppml] Effects of explosive routing table growth on ISP behavior

[Brian Johnson]

Scott Leibrand wrote:
> Not if you do peer-level localpref communities on the backup
> announcements.  That way, if I'm a third party network filtering at
> RIR-assignment size, and I prefer transit provider 1 (like everyone
> else), then my packets hit that transit provider, then get immediately
> sent across the closest peering link to the preferred transit
provider.
> Not completely optimal, but it preserves the ISP's ability to do
> inbound
> TE, while providing a safety valve to filter deaggregates where
> necessary without losing reachability.  Again, I'm not advocating
> anyone
> start filtering just yet, but I think we need to design our policies
to
> ensure we don't block the safety valve.

MY ENTIRE POINT IS THAT ARIN NEEDS TO STAY OUT OF ROUTING POLICY!

- Brian