nanog mailing list archives
Re: Route leak in Bangladesh
From: Job Snijders <job () instituut net>
Date: Tue, 30 Jun 2015 16:24:43 +0200
On Tue, Jun 30, 2015 at 09:44:12AM -0400, Joe Abley wrote:
On 30 Jun 2015, at 9:41, Job Snijders wrote:In addition to the BGP community scheme, outbound as-path filters could help.I agree, but possibly not in the case of a redistribution loop. (We don't know that's what happened, exactly, but I thought it was worth mentioning.)
Joe, you are right. In this specific situation, for a small to medium sized network, it might be prudent to apply an outbound prefix-filter on all transit & peering sessions and thus only allowing prefixes which actually belong to downstream customers and the network itself. One could generate that prefix-list based on the network's AS-SET. I wouldn't deploy /only/ outbound prefix-filters. This method should be viewed as complementary to other methods such as the already mentioned a BGP community scheme. Kind regards, Job
Current thread:
- Re: NTT->HE earlier today (~10am EDT), (continued)
- Re: NTT->HE earlier today (~10am EDT) Job Snijders (Jun 30)
- Re: NTT->HE earlier today (~10am EDT) Randy Bush (Jun 30)
- Re: NTT->HE earlier today (~10am EDT) Job Snijders (Jun 30)
- Re: Route leak in Bangladesh Matsuzaki Yoshinobu (Jun 30)
- Re: Route leak in Bangladesh Randy Bush (Jun 30)
- Re: Route leak in Bangladesh Matsuzaki Yoshinobu (Jun 30)
- Re: Route leak in Bangladesh Mark Tinka (Jun 30)
- Re: Route leak in Bangladesh Nick Hilliard (Jun 30)
- Re: Route leak in Bangladesh Job Snijders (Jun 30)
- Re: Route leak in Bangladesh Joe Abley (Jun 30)
- Re: Route leak in Bangladesh Job Snijders (Jun 30)
- Re: Route leak in Bangladesh Mark Tinka (Jun 30)
- Re: Route leak in Bangladesh Job Snijders (Jun 30)
- Re: Route leak in Bangladesh Randy Bush (Jun 30)
- Re: Route leak in Bangladesh Sandra Murphy (Jun 30)
- Re: Route leak in Bangladesh Justin M. Streiner (Jun 30)
- Re: Route leak in Bangladesh Sandra Murphy (Jun 30)
- Re: Route leak in Bangladesh Job Snijders (Jun 30)
- Re: Route leak in Bangladesh Graham Beneke (Jun 30)
- Re: Route leak in Bangladesh Justin M. Streiner (Jun 30)