"2M today, 10M with no change in technology"? An informal survey.
Jon Lewis
jlewis at lewis.org
Tue Aug 28 00:50:48 UTC 2007
On Mon, 27 Aug 2007, David Conrad wrote:
>> Any reasonably valid way of predicting when we'll hit 244,000 routes in the
>> default-free zone?
>
> Um?
>
> Real Soon Now?
...
> I must be missing something obvious (or should I be dusting off my unused Y2K
> survival gear?)
Unlike Y2K, the end of the useful service life up the Sup2 can easily be
pushed further away in time.
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 233651 151129 82522 35.3% All ASes
AS4134 1337 339 998 74.6% CHINANET-BACKBONE No.31,Jin-rong Street
AS18566 1020 101 919 90.1% COVAD - Covad Communications Co.
AS4323 1315 437 878 66.8% TWTC - Time Warner Telecom, Inc.
AS4755 1331 507 824 61.9% VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
There's really only 151129 routes you need to have "full routes". Forcing
just these top 4 slobs to aggregate reduces your global table by 3619
routes. Forcing the top 30 to aggregate frees up 15809 routes.
Of course there are other reasons to upgrade (better CPU, MPLS, IPv6,
etc.), but if you can't upgrade, there are alternatives to stretch the old
hardware. It's not like it hasn't been done before.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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