nanog mailing list archives
Re: Yahoo outage summary
From: Tony Tauber <ttauber () 1-4-5 net>
Date: Mon, 9 Jul 2007 09:05:37 -0700
On Mon, Jul 09, 2007 at 02:31:10PM +0800, Randy Bush wrote:
following existing BCPs with currently-deployed techniques/functionality/features would have prevented the issue described in the post.knowing that level(3) is one of the most serious deployments of irr-based route filters and other prudent practices, perhaps we should wait for a post mortem from level(3) before jumping to conclusions? randy
Level3's filter implmentation is indeed well-done, however, the fact remains that the IRR (which I use and endorse) has no linkage to any other source of information for purposes of validation. It's fundamentally garbage in, garbage out. Say some ISP has a provisioning tool which updates their router configs and the IRR in one fell swoop. If the provisioner makes a typo the IRR will gladly accept the entry for, say, 12/8, and the upstream will rebuild their filters with that entry automatically and you get the same result. There's no magic bullet in updating BGP if a fundamental, verifiable data model is not accepted and agreed upon. Tony
Current thread:
- Re: Yahoo outage summary, (continued)
- Re: Yahoo outage summary jared mauch (Jul 09)
- Re: Yahoo outage summary Patrick W. Gilmore (Jul 09)
- Re: Yahoo outage summary Florian Weimer (Jul 09)
- Re: Yahoo outage summary Lixia Zhang (Jul 08)
- Re: Yahoo outage summary Cat Okita (Jul 08)
- Re: Yahoo outage summary Andy Dills (Jul 08)
- Re: Yahoo outage summary Sam Stickland (Jul 10)
- Re: Yahoo outage summary Roland Dobbins (Jul 08)
- Re: Yahoo outage summary Randy Bush (Jul 08)
- Re: Yahoo outage summary Roland Dobbins (Jul 08)
- Re: Yahoo outage summary Tony Tauber (Jul 09)
- Re: Yahoo outage summary Randy Bush (Jul 09)
- Re: Yahoo outage summary Sean Donelan (Jul 09)
- Re: Yahoo outage summary Douglas Otis (Jul 09)
- Re: Yahoo outage summary Steven M. Bellovin (Jul 08)
- Re: Yahoo outage summary Sean Donelan (Jul 08)
- Re: Yahoo outage summary Joe Abley (Jul 09)
- Re: Yahoo outage summary Jared Mauch (Jul 09)
- Re: Yahoo outage summary Tony Tauber (Jul 09)