What is the most standard subnet length on internet
Jon Lewis
jlewis at lewis.org
Tue Dec 23 01:11:45 UTC 2008
On Mon, 22 Dec 2008, Seth Mattinen wrote:
> Anyone running a platform that can't take a full table would apply such a
> filter to weed out anyone who likes to announce all of their space as /24's
> for "traffic engineering". If one does that and doesn't announce the
> aggregate as well, one could find themselves facing random black holes.
There's no "if" about it. Months ago when I and others were looking into
this, we found plenty of examples of networks with /19s, /20s, etc.
announcing only the /24 deaggregates. If you plan to filter these people
and have customers to answer to, you'll need to point default at someone
who's not filtering them.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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