nanog mailing list archives
Re: Has PSI been assigned network 1?
From: Hank Nussbacher <HANK () taunivm tau ac il>
Date: Mon, 24 Apr 95 08:02:10 IST
On Sun, 23 Apr 1995 12:33:54 -0500 (CDT) you said:
Hank, Enduser filtering (CERN) is in principle completely different from what we (might if not possible else) do: I am not supposed to filter anything between meetpoints and customers, because I agree to some people who pay for it to provide Internet access. I would filter nothing at all (curretnly do filter nothing), which does not mean that my suport hosts and networks are open. Filtering comes alo into place when customers want only access between certain networks, but in general NSPs/ISPs are not supposed to filter at all. Routing is different. We filter routing updates (not access filters) to accelerate BGP convergence. We filter what we announce to the outside world (of course not all the trash we get in).
I don't filter outgoing routing updates to speed BGP convergence. I do it so as not to pollute the Internet with leaked bad nets. It has happened to me and has happened to everyone. Just look at the recent nets that Australia was leaking. If the routing access lists were automatically created every day based on the data in the routing DB, then this would not happen. Of course, no one can force you but your service provider can filter what he/she hears from you based on the same rules. Then you have a double secure routing scheme.
Mike Michael F. Nittmann nittmann () wis com
Hank Nussbacher
Current thread:
- Re: Has PSI been assigned network 1?, (continued)
- Re: Has PSI been assigned network 1? Randy Bush (Apr 23)
- Re: Has PSI been assigned network 1? Curtis Villamizar (Apr 24)
- Re: Has PSI been assigned network 1? Craig Labovitz (Apr 24)
- Re: Has PSI been assigned network 1? Sean Doran (Apr 24)
- Re: Has PSI been assigned network 1? Jessica Yu (Apr 27)
- Re: Has PSI been assigned network 1? Randy Bush (Apr 23)
- Re: Has PSI been assigned network 1? Sean Doran (Apr 24)
- Re: Has PSI been assigned network 1? Michael F. Nittmann (Apr 23)
- IAP Guidebook - help from the big guys Rich Roth (Apr 26)
- Re: Has PSI been assigned network 1? Randy Bush (Apr 23)
- Re: Has PSI been assigned network 11111111? Paul A Vixie (Apr 24)
- Re: Has PSI been assigned network 1? Eric M. Carroll (Apr 24)
- Re: Has PSI been assigned network 1? Michael F. Nittmann (Apr 24)
- pull-ups on route annoucements to deter route flap Alan Barrett (Apr 24)
- Re: Has PSI been assigned network 1? Karl Denninger, MCSNet (Apr 24)
- Re: Has PSI been assigned network 1? Andrew Partan (Apr 24)
- Why Vadim likes statics bmanning (Apr 24)
- Re: Why Vadim likes statics Eric M. Carroll (Apr 24)
- BGP vs. static routing (Re: Why Vadim likes statics) Sean Doran (Apr 24)