Re: /27 the new /24

[Suresh Ramasubramanian <ops.lists () gmail com>]

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 <bill () herrin us> wrote:
>
> On Fri, Oct 2, 2015 at 11:55 AM, Suresh Ramasubramanian
> <ops.lists () 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 ................ herrin () dirtside com  bill () herrin us
> Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>