On Fri, 14 Oct 2005, Jeroen Massar wrote:
On Fri, 2005-10-14 at 10:57 -0400, Joe Abley wrote: <SNIP>
Are you suggesting that something else is required for ISPs above and beyond announcing PI space with BGP, or that shim6 (once baked and real) would present a threat to ISPs?
There is one situation which is not really covered here, one can of course announce multiple de-aggregates, but, these will be filtered. As such announcing them will only hurt one a lot, as the 'transits' that do carry them are mostly of bad quality.
eg take the following situation:
snip following one example of multihoming problems... there are others.
In this case, which is basically "traffic engineering for endsites with a global prefix", one runs into the shim6 thing again....
For instance UUNET 'solved' this in a different way, they simply requested a 10 or so separate /32's. See GRH for the list. These chunks are still /32's thus only <n> of these /32's can exist in the global routing table. It would still be 'nicer' if they only had to use one prefix...
One may want to have more options :) one might want to perhaps peer in region, or by national boundary... you must have options, a single prefix, as your example above showed, is not an option. -Chris