nanog mailing list archives
Re: Route table growth and hardware limits...talk to the filter
From: Bradley Urberg Carlson <buc () visi com>
Date: Sat, 8 Sep 2007 12:36:51 -0500
Joe Provo wrote:
Any policing effort will require co-ordination and to be stated publicly (here and elsewhere) that it is a Good Thing.
...
A direct cookbook provided and lots of folks will still think you are asking too much of them.
Some of the networks this would help may be skittish of testing the concept themselves. And no Tier-2 operator would want to be perceived as making a cheap "hack", or of using a non-standard routing policy. Documenting the practice (e.g. "RFCxxxx: filtering BGP route tables using RIR allocations") would help the network operator answer customer inquiries (and auditors' questions).
The approach could create a different kind of Tier-1/Tier-2 structure: default-free networks and "default-enabled networks" ;) . A default-enabled network, which lets its customers advertise long prefixes out of its own allocations to other ISPs, would need to purchase transit from default-free ISPs, or else coordinate holes in the filters with their default-enabled upstream. Default-enabled Tier-2's would need to be clear about this limitation when selling transit to a BGP-speaking customer; and would be unable to use other default-enabled ISPs as "carrier of last resort".
-Bradley Urberg-Carlson
Current thread:
- RE: Route table growth and hardware limits...talk to the filter, (continued)
- RE: Route table growth and hardware limits...talk to the filter Jon Lewis (Sep 08)
- RE: Route table growth and hardware limits...talk to the filter Lincoln Dale (Sep 09)
- Re: Route table growth and hardware limits...talk to the filter William Allen Simpson (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Jared Mauch (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Adrian Chadd (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Joe Provo (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Stephen Sprunk (Sep 10)
- Re: Route table growth and hardware limits...talk to the filter bmanning (Sep 11)
- Re: Route table growth and hardware limits...talk to the filter Russ White (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Forrest (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Andrew - Supernews (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Forrest (Sep 08)
- Re: Route table growth and hardware limits...talk to the filter Joe Provo (Sep 09)
- Re: Route table growth and hardware limits...talk to the filter Forrest (Sep 09)
- Re: Route table growth and hardware limits...talk to the filter Stephen Sprunk (Sep 10)
- Re: Route table growth and hardware limits...talk to the filter Kevin Loch (Sep 10)
- Re: Route table growth and hardware limits...talk to the filter Stephen Sprunk (Sep 10)