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Re: Hello, route filters?

  • From: Adam Rothschild
  • Date: Mon Oct 29 12:41:51 2001 
Just a brief follow-up to what I posted previously...

On Mon, Oct 29, 2001 at 02:33:30AM -0500, Adam Rothschild wrote:
> I guess I see the rationale behind passing this cruft along to EXDS
> transit customers who haven't yet read the filtering section of
> Halabi (remember: more specifics == more outbound traffic from
> customer == more revenue).  But exchange points?

This is a full view from Exodus:

x.x.x.x   4  3967  243954   11543   752069    0    0 1d11h	106124

This is the same full view from Exodus if they'd practice what they
preach(ed) and apply <http://www.nielsen.net/people/christian/linx.html>:

x.x.x.x   4  3967  262248   11546   752112   26    0 1d11h       87853

There are some particularly entertaining "bogons" (well, in my mind)
in the non-abbreviated version, including:

$ /usr/local/rancid/bin/clogin -c "show ip bgp regex 3967_" border1.nyc1 > exds-routes
$ grep "/32" exds-routes |wc -l
     27
$ grep "/31" exds-routes | wc -l
      2
$ grep "/30" exds-routes | wc -l
    293
$ grep "/29" exds-routes | wc -l
    114
$ grep "/28" exds-routes | wc -l
    269
$ grep "/27" exds-routes | wc -l
    220
$ grep "/26" exds-routes | wc -l
    275
$ grep "/25" exds-routes | wc -l
    312
$ grep "> 10." exds-routes
*> 10.255.253.34/32 x.x.x.x                          0 3967 i
*> 10.255.253.35/32 x.x.x.x                          0 3967 i
*> 10.255.254.34/32 x.x.x.x                          0 3967 i
*> 10.255.254.35/32 x.x.x.x                          0 3967 i

Can a brother get some prefix-filters?

-adam