NANOG/IEPG/ISOC's current role

Fri Apr 5 05:20:03 UTC 1996

In message <9604041959.AA10553 at butler.ncube.com>, Vadim Antonov writes:
> Avi Freedman <freedman at netaxs.com> wrote:
> >Unless they have a real plan & need to get about 128 buildings full of 
> >100 machines/building online, it's a lost cause.  You already need a 
> >/18 to be heard from Sprint in >= 207/8.  Unless you're a customer of
> >Sprint.
> 
> And if you're a customer of Sprint you'll get aggregated in something
> like /14.

Not if you are a customer looking for portable address space.

> --vadim

Number of prefixes covered by 205/8 to 208/8 with length >18
advertised to AS1673 (preferred route only - I think this will come
down to AS path length):

   number      AS            Number > 19:   Number > 20:
       1      293	
       2     2685	        1 293          1 293
       3     3407	        2 2685         2 2685
      15     1740	       14 1740        14 1740
      23     1324	       23 1324        23 1324
      25      174	       25 174         25 174
      27     2551	       27 2551        27 2551
      64        1	       64 1           60 1
     109     1665	      109 1665       107 1665
     458      701	      432 701        406 701
     716      690	      686 690        676 690
     950     1239	      763 3561       720 3561
    1095     3561	      926 1239       897 1239

Look how comes out announcing the most long prefixes in the TWD.  At
least the other providers that announce them accept them from their
peers.  There were 3795 prefixes covered by 205/8 to 208/8 and
growing, mostly small very difficult or impossible to further
aggregate prefixes.

Curtis

ps- Number of TWD prefixes with length <= 18 by border AS:

   1 1664
   1 1665
   1 3407
   2 1324
   4 174
   4 1740
   6 2551
  10 1
  28 701
  54 690
  78 1239
 118 3561