Re: yo, savvis, cox, comcast, and armstrong! (Re: The Cidr Report)

[Mark Kasten <Mark.Kasten () savvis net>]

yeah, we(being savvis) are aware.  this will all disappear when AS6347 
is integrated to AS3561.  AS3561 is, for the most part clean, and it 
will stay that way.  AS6347 will drop off the map in the coming months. 
 have patience.  ;-)

thx,
        mark



Paul Vixie wrote:
> cidr-report () potaroo net writes:
>
>
> > This report has been generated at Fri Jun  4 21:43:44 2004 AEST.
> > ...
> > Recent Table History
> >        Date      Prefixes    CIDR Agg
> > ...
> >        03-06-04    137774       96139
> >        04-06-04    137884       95196
>
>
> ok, so in one day we saw the addition of 110 prefixes, but they were aligned
> such that the size of a properly cidr-aggregated table dropped by 943.  this
> is quite a trick.  what does it all mean?
>
>
> > ...
> > Aggregation Summary
> > The algorithm used in this report proposes aggregation only
> > when there is a precise match using the AS path, so as 
> > to preserve traffic transit policies. Aggregation is also
> > proposed across non-advertised address space ('holes').
>
>
> and who's doing it?
>
>
> > ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
> >
> > Table     136767    95172    41595    30.4%   All ASes
> >
> > AS6347       940      160      780    83.0%   SAVV SAVVIS Communications
> >                                               Corporation
>
>
> yo, savvis!  you're putting 940 routes into the global routing table, and
> when somebody did "sort -u" on the as-paths, they found that with no change
> to your transit policies, you could be sending just 160 instead.  "help?"
>
>
> > AS22909      390       33      357    91.5%   CMCS Comcast Cable
> >                                               Communications, Inc.
>
>
> yo, comcast!
>
>
> > AS22773      378       58      320    84.7%   CXAB Cox Communications Inc.
> >                                               Atlanta
> > AS27364      360       44      316    87.8%   ARMC Armstrong Cable Services
>
>
> yo, cox and armstrong!
>
>
> > AS11172      351       56      295    84.0%   Servicios Alestra S.A de C.V
> > AS17676      339       50      289    85.3%   JPNIC-JP-ASN-BLOCK Japan
> >                                               Network Information Center
> > AS9929       316       33      283    89.6%   CNCNET-CN China Netcom Corp.
> > AS6478       305       48      257    84.3%   ATTW AT&T WorldNet Services
> > AS25844      243       16      227    93.4%   SASMFL-2 Skadden, Arps, Slate,
> >                                               Meagher & Flom LLP
> > AS14654      230        5      225    97.8%   WAYPOR-3 Wayport
> > AS6327       208       28      180    86.5%   SHAWC-2 Shaw Communications
> >                                               Inc.
>
>
> yo!  yo!  yo!  (i've only listed those who could reduce their impact on the
> global routing table by 80% or more... as you all saw, the list *was* longer.)
>
> there are any number of unemployed bgp experts haunting this mailing list
> looking for post-dotbomb work.  many of them would accept work as short term
> consultants to help you folks get down under the 80% level.  just ask!