nanog mailing list archives
Re: Is it time to abandon bogon prefix filters?
From: Jo Rhett <jrhett () netconsonance com>
Date: Thu, 21 Aug 2008 15:01:20 -0700
On Aug 20, 2008, at 7:00 AM, Kevin Loch wrote:
It doesn't look like the feasible paths rpf handles the situation where your bgp customer is not announcing all or any of their prefixes to you.This can be done for TE or debugging an inbound routing issue. Announcing prefixes to me and then blackholing the traffic is not something I would appreciate as a customer.If you do this (or strict rpf) on BGP customers at least warn them up front that if they ever stop announcing prefixes to you then traffic they sendyou will get dropped.
Clueful BGP admins know how to send their routes with no-advertise on them.
There are fairly good reasons to require your direct customers always advertise their routes to you, even if you won't be readvertising them. uRPF is one. Not paying transit both inbound and out for multi- gig DoS attacks is my favorite. Etc.
-- Jo RhettNet Consonance : consonant endings by net philanthropy, open source and other randomness
Current thread:
- Re: Is it time to abandon bogon prefix filters?, (continued)
- Re: Is it time to abandon bogon prefix filters? Danny McPherson (Aug 18)
- Re: Is it time to abandon bogon prefix filters? Sean Donelan (Aug 21)
- RE: Is it time to abandon bogon prefix filters? Tomas L. Byrnes (Aug 24)
- Re: Is it time to abandon bogon prefix filters? Valdis . Kletnieks (Aug 25)
- Re: Is it time to abandon bogon prefix filters? Chris Marlatt (Aug 25)
- Re: Is it time to abandon bogon prefix filters? Valdis . Kletnieks (Aug 25)
- RE: Is it time to abandon bogon prefix filters? Sean Donelan (Aug 26)
- Re: Is it time to abandon bogon prefix filters? Kevin Loch (Aug 19)
- Re: Is it time to abandon bogon prefix filters? Pekka Savola (Aug 19)
- Re: Is it time to abandon bogon prefix filters? Kevin Loch (Aug 20)
- Re: Is it time to abandon bogon prefix filters? Jo Rhett (Aug 21)
- Re: Is it time to abandon bogon prefix filters? Sean Donelan (Aug 21)
- Re: Is it time to abandon bogon prefix filters? Jared Mauch (Aug 25)
- Re: Is it time to abandon bogon prefix filters? Marshall Eubanks (Aug 25)
- Re: Is it time to abandon bogon prefix filters? Mark Andrews (Aug 25)
- Re: Is it time to abandon bogon prefix filters? Pete Templin (Aug 07)
- Re: Is it time to abandon bogon prefix filters? Patrick W. Gilmore (Aug 07)
- Re: Is it time to abandon bogon prefix filters? Robert E. Seastrom (Aug 07)
- Re: Is it time to abandon bogon prefix filters? Randy Bush (Aug 07)
- Re: Is it time to abandon bogon prefix filters? Robert E. Seastrom (Aug 07)
- Re: Is it time to abandon bogon prefix filters? Patrick W. Gilmore (Aug 07)