There would be a default route sure - but the filter simply means that if your packets from say a src IP in a level 3 /24 (where the minimum alloc size was what, /20) wouldn't go through if you sent them though say a cogent interface
--srs > On 02-Oct-2015, at 10:04 PM, William Herrin <b...@herrin.us> wrote: > > On Fri, Oct 2, 2015 at 11:55 AM, Suresh Ramasubramanian > <ops.li...@gmail.com> wrote: >> Besides which more than one provider filters by a minimum prefix length >> per /8 - wasn't Swisscom or someone similar doing that? So multi >> homing with even a /24 is somewhat patchy in terms of effectiveness > > Hi Suresh, > > That hasn't been true for something like a decade. Anybody who filters > anything shorter than /24 without also taking a default route (or the > equivalent) is not fully connected to the Internet. > > Regards, > Bill Herrin > > > > -- > William Herrin ................ her...@dirtside.com b...@herrin.us > Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
