nanog mailing list archives
Re: any dangers of filtering every /24 on full internet table to preserve FIB space ?
From: Brie <bruns () 2mbit com>
Date: Mon, 10 Oct 2022 13:06:13 -0600
On 10/10/22 9:20 AM, Stephane Bortzmeyer wrote:
But theoretically every filtered /24 could be routed via smaller prefix /23 /22 /21 or etc.I don't think this is true, even in theory, specially for legacy prefixes. There is probably somewhere a Geoff Huston survey on /24 without a covering route.
There's lots of legacy blocks out there that are only /24 in size... Like my primary IPv4 block, for example. I believe you'll also find them referred to as 'portable' blocks. -- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org
Current thread:
- any dangers of filtering every /24 on full internet table to preserve FIB space ? Edvinas Kairys (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Ca By (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Stephane Bortzmeyer (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Stephane Bortzmeyer (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Brie (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Randy Bush (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? John Gilmore (Oct 10)
- RE: any dangers of filtering every /24 on full internet table to preserve FIB space ? Tobias Fiebig (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Geoff Huston (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? richey goldberg (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? David Bass (Oct 10)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Brandon Martin (Oct 21)
- RE: any dangers of filtering every /24 on full internet table to preserve FIB space ? Adam Thompson (Oct 24)
- Re: any dangers of filtering every /24 on full internet table to preserve FIB space ? Jon Sands (Oct 27)