nanog mailing list archives
Re: "Tactical" /24 announcements
From: William Herrin <bill () herrin us>
Date: Fri, 13 Aug 2021 10:29:50 -0700
On Fri, Aug 13, 2021 at 9:49 AM Baldur Norddahl <baldur.norddahl () gmail com> wrote:
Our peer is advertising a prefix for which they will not route all addresses covered. Is that route not then a lie? Should they not have exploded the prefix so they could avoid covering the part of the prefix they will not accept traffic to? (ps: not arguing they should!)
Hi Baldur, You do understand the consequence of the position you're taking? You're saying that when an ISP provides a /24 to a customer for multihoming, a common practice throughout the history of the commercial Internet, that ISP MUST also disaggregate the announcement for the supernet that /24 is a part of, exploding the size of the BGP table. If they don't, the overlapping announcement is a "lie" because they don't always have a route to the /24. Regards, Bill Herrin -- William Herrin bill () herrin us https://bill.herrin.us/
Current thread:
- Re: "Tactical" /24 announcements, (continued)
- Re: "Tactical" /24 announcements Hank Nussbacher (Aug 12)
- Re: "Tactical" /24 announcements Amir Herzberg (Aug 12)
- Re: "Tactical" /24 announcements Mark Tinka (Aug 13)
- Re: "Tactical" /24 announcements William Herrin (Aug 12)
- Re: "Tactical" /24 announcements William Herrin (Aug 12)
- Re: "Tactical" /24 announcements Amir Herzberg (Aug 12)
- Re: "Tactical" /24 announcements William Herrin (Aug 12)
- Re: "Tactical" /24 announcements Baldur Norddahl (Aug 12)
- Re: "Tactical" /24 announcements Amir Herzberg (Aug 12)
- Re: "Tactical" /24 announcements Baldur Norddahl (Aug 13)
- Re: "Tactical" /24 announcements William Herrin (Aug 13)
- Re: "Tactical" /24 announcements Amir Herzberg (Aug 13)
- Re: "Tactical" /24 announcements Tom Beecher (Aug 13)
- Re: "Tactical" /24 announcements Amir Herzberg (Aug 13)
- Re: "Tactical" /24 announcements Masataka Ohta (Aug 14)
- Re: "Tactical" /24 announcements Baldur Norddahl (Aug 13)
- Re: "Tactical" /24 announcements Masataka Ohta (Aug 14)
- Re: "Tactical" /24 announcements Jeff Tantsura (Aug 14)
- Re: "Tactical" /24 announcements Masataka Ohta (Aug 15)
- Re: "Tactical" /24 announcements Sabri Berisha (Aug 13)
- Re: "Tactical" /24 announcements Jon Lewis (Aug 12)