[ppml] Effects of explosive routing table growth on ISP behavior
bjohnson at drtel.com
Thu Nov 1 09:54:43 EDT 2007
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
> Not completely optimal, but it preserves the ISP's ability to do
> TE, while providing a safety valve to filter deaggregates where
> necessary without losing reachability. Again, I'm not advocating
> start filtering just yet, but I think we need to design our policies
> ensure we don't block the safety valve.
MY ENTIRE POINT IS THAT ARIN NEEDS TO STAY OUT OF ROUTING POLICY!
More information about the ARIN-PPML