nanog mailing list archives
Re: maximum ipv4 bgp prefix length of /24 ?
From: "Elmar K. Bins" <elmi () 4ever de>
Date: Wed, 4 Oct 2023 08:27:11 +0100
lists () mtin net (Justin Wilson (Lists)) wrote:
I think it is going to have to happen. We have several folks on the IX and various consulting clients who only need 3-6 Ips but have to burn a full /24 to participate in BGP. I wrote a blog post awhile back on this topic https://blog.j2sw.com/data-center/unpopular-opinion-bgp-should-accept-smaller-than-a-24/
Justin, I'm not sure you're not confusing scope here. Everybody and their sister accept smaller blocks from their customers; we're all talking about the DFZ here, not customer routes that you aggregate. I would estimate most of the "consulting clients" have no need for multihoming. If they do, they can always use IP, and abandon legacy IP. Elmar. PS: I'm convinced we'll never agree to put longer prefixes into the DFZ. The gear everybody's using doesn't handle it well, and as people have stated before, there's just no incentive. I, personally, don't even take /24s in many places (sometimes cutting off at /20), but then I take defaults from my transits who have less ancient gear.
Current thread:
- Re: maximum ipv4 bgp prefix length of /24 ?, (continued)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Tinka (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Delong.com via NANOG (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Matthew Petach (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? William Herrin (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Chris Hills (Oct 03)
- Re: maximum ipv4 bgp prefix length of /24 ? Owen DeLong via NANOG (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Jakob Heitz (jheitz) via NANOG (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Jon Lewis (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Owen DeLong via NANOG (Oct 02)
- Re: maximum ipv4 bgp prefix length of /24 ? Elmar K. Bins (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Tinka (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Elmar K. Bins (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Owen DeLong via NANOG (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Musa Stephen Honlue (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Tinka (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Owen DeLong via NANOG (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Crist Clark (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Tinka (Oct 04)
- Message not available
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Tinka (Oct 04)