1) Gains by aggregating at the origin AS level
--- 13Aug98 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS3602 554 322 232 41.9% Sprint Canada Inc.
AS701 1133 933 200 17.7% Alternet
AS4293 442 255 187 42.3% IMCI
AS174 719 584 135 18.8% Performance Systems International
AS4200 192 100 92 47.9% AGIS (Apex Global Information Ser
AS2685 238 153 85 35.7% IBM Global Network - US
AS7046 229 163 66 28.8% UUNET-CUSTOMER
AS1239 535 487 48 9.0% SprintLink Backbone
Sigh, bad trend. The big guys don't seem to care about aggregation
any more.
ob. NANOG: It's a *PLOT* to *CRUSH* the small providers, who
are reliant on small and stable routing tables!
Call the FTC!!!!!!!
Funniest part:
AS762 118 81 37 31.4% WELLFLEET-AS
Boy, *THEY* don't get it, that's for sure.
Or maybe they want to be the ones to *SUPPLY THE BIGGER ROUTERS*
to the poor small ISPs who will have to upgrade!!
It's a PLOT!
Sean.
> AS762 118 81 37 31.4% WELLFLEET-AS
Oddly enough, they are announcing the aggregate *and* the specifics:
brd1>sho ip bgp reg _762_
*> 192.32.0.0/16 207.106.96.5 0 4969 6461 1673
*> 192.32.2.0 207.106.96.5 0 4969 6461 1673
*> 192.32.3.0 207.106.96.5 0 4969 6461 1673
*> 192.32.4.0 207.106.96.5 0 4969 6461 1673
*> 192.32.6.0 207.106.96.5 0 4969 6461 1673
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Atheism is a non-prophet organization. I route, therefore I am.
Alex Rubenstein, alex@nac.net, KC2BUO, ISP/C Charter Member
Father of the Network and Head Bottle-Washer
Net Access Corporation, 9 Mt. Pleasant Tpk., Denville, NJ 07834
Don't choose a spineless ISP; we have more backbone! http://www.nac.net
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> > AS762 118 81 37 31.4% WELLFLEET-AS
Oddly enough, they are announcing the aggregate *and* the specifics:
brd1>sho ip bgp reg _762_
*> 192.32.0.0/16 207.106.96.5 0 4969 6461 1673
*> 192.32.2.0 207.106.96.5 0 4969 6461 1673
*> 192.32.3.0 207.106.96.5 0 4969 6461 1673
*> 192.32.4.0 207.106.96.5 0 4969 6461 1673
*> 192.32.6.0 207.106.96.5 0 4969 6461 1673
If one were paranoid, one might imagine that they are doing so
intentionally to see how many Cisco routers they can tank through prefix
overload. The problem with this is that a) they aren't also announcing the
/17's, /18's, ... /25's and b) overloading a Cisco seems to mean that
someone buys a bigger Cisco, thereby enhancing Cisco's revenue stream.
One is then left with the theory that they are advertising more specifics
for optimality, but haven't discovered communities yet.
Exercise for the reader: If prefixes of length F and longer are filtered,
and a domain has a prefix of length N, how many prefixes can they propagate
into the backbone? How many before people start proxy aggregating them?
Tony