RE: The Cidr Report

[Mike Leber <mleber () he net>]

On Fri, 11 Feb 2005, Stephen J. Wilcox wrote:
> On Fri, 11 Feb 2005, Frotzler, Florian wrote:
>
> > > Recent Table History
> > >         Date      Prefixes    CIDR Agg
> > >         04-02-05    151613      103143
> > >         05-02-05    152142      103736
> > >         06-02-05    152231      103721
> > >         07-02-05    152353      103830
> > >         08-02-05    152514      103966
> > >         09-02-05    153855      104090
> > >         10-02-05    154283      104246
> > >         11-02-05    154341      104240
> > <...>
> >
> > ~ +3000 routes in one week? Anyone else frightened by this?
> >
> > Florian
>
> any thoughts on how to fix it? my peers keep sending these to me and i'll even 
> admit my customers do too. telling people its bad doesnt appear to have an 
> effect, at the small end networks seem to collect /24s and announce them freely, 
> at the large end i'm still without an explanation as to why large networks 
> require so many prefixes - none of them seem to comment?
>
> if people arent self policing it seems the only other way is for the larger 
> transit providers to stop accepting prefixes and telling their customers to fix 
> their s**t. and i dont see them doing this.

It seems to me they get paid to carry prefixes by their customers.

And their peers listen to the prefixes because they make money by using
those prefixes.

So, to the extent you make money listening to them, use the routes.

And if they start to cause you problems you will have to take corrective
action to stablize your network, as was done a long time ago (internet
time):

http://www.merit.edu/mail.archives/nanog/1995-09/msg00047.html

(link grabbed at random from the archives, I'm sure there are better posts
that actually list the full old school sprint filters.)

However, if you are the one filtering and all your competitors figure out
how to handle 154,000 routes then you will be at a competitive
disadvantage.

Coincidentally, the largest networks also spend the most with their
vendors and get to tell the vendors what they want in the next generation
of boxes they buy.

Mike.

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