Re: What is a reasonable range for global BGP table size?

[Jared Mauch <jared () puck Nether net>]

On Thu, Jul 18, 2002 at 11:11:18AM -0600, Kris Foster wrote:
> That number is still too high since some people are advertising their /25 to
> /32 prefixes to the route-views box..

        true, but unless you do ingress filtering of your upstream
(which most smaller ASes do not do) your numbers may be
wrong.  People also leak internal routes to route-views at
times also i've noticed.

        (still talking about the same route-views snapshot)

count netmask
% cut -d: -f2 oix.home_as.out | cut -d/ -f2 | sort -n | uniq -c
  25 8
   6 9
   7 10
  12 11
  36 12
  99 13
 269 14
 514 15
9764 16
1537 17
2778 18
8378 19
8131 20
6075 21
9949 22
12258 23
73921 24
 468 25
 419 26
 354 27
 378 28
 241 29
 225 30
 105 32

        - jared

> Kris
>
>
> > -----Original Message-----
> > From: Jared Mauch [mailto:jared () puck Nether net]
> > Sent: Thursday, July 18, 2002 12:47 PM
> > To: Robert Boyle
> > Cc: nanog () merit edu
> > Subject: Re: What is a reasonable range for global BGP table size?
> >
> >
> >
> >     I was going off my data analysis of
> > route-views data.
> >
> > wc -l oix.home_as.out
> >   135949 oix.home_as.out
> >
> >     this file has prefix:home_asn
> >
> >     (where home_asn is the last asn in the as_path.  prefixes
> > with inconsistent home_as will appear twice.  this may be 
> > cause of some
> > of your confusion.  eliminating those brings it to 120131 prefixes)
> >
> >     - jared
> >
> > On Thu, Jul 18, 2002 at 12:37:09PM -0400, Robert Boyle wrote:
> > > At 11:26 AM 7/18/2002 -0400, you wrote:
> > > > Hmm.
> > > >
> > > > We don't filter, and
> > > >
> > > > 112942 network entries and 391859 paths using 25288182 
> > bytes of memory
> > > We don't filter either and...
> > >
> > > 117800 network entries and 339843 paths using 23660948 
> > bytes of memory
> > > "about 135k prefixes last i checked." is not what we see 
> > here from any of 
> > > our upstreams.
> > >
> > >
> > > -Robert
> > >
> > >
> > >
> > >
> > > Tellurian Networks - The Ultimate Internet Connection
> > > http://www.tellurian.com | 888-TELLURIAN | 973-300-9211
> > > "Good will, like a good name, is got by many actions, and 
> > lost by one." - 
> > > Francis Jeffrey
> >
> > -- 
> > Jared Mauch  | pgp key available via finger from jared () puck nether net
> > clue++;      | http://puck.nether.net/~jared/  My statements 
> > are only mine.

-- 
Jared Mauch  | pgp key available via finger from jared () puck nether net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.