nanog mailing list archives
Re: maximum ipv4 bgp prefix length of /24 ?
From: Mark Tinka <mark@tinka.africa>
Date: Thu, 5 Oct 2023 08:55:11 +0200
On 10/5/23 08:32, Geoff Huston wrote:
Not really. The stability of number in IPv4 as compared to the monotonic rise in IPv6 is what I find to be curious.
I think the fact that RIR's allocate very large IPv6 address space to their members may well be what is driving this.
Historically, network operators do enjoy de-aggregating address space. One can get significantly more /48's out of a /32 (or shorter) than they would /24's out of any IPv4 allocation they acquired.
One way to control this escalation is to shorten the maximum prefix length that all operators are willing to accept into the DFZ. The other way would be to get RIR's to lengthen the minimum allocation they can make to their members. Neither of these solutions is likely to be popular, but nor is having to pay large sums of money for more FIB.
Mark.
Current thread:
- Re: maximum ipv4 bgp prefix length of /24 ?, (continued)
- Re: maximum ipv4 bgp prefix length of /24 ? Owen DeLong via NANOG (Oct 04)
- Re: maximum ipv4 bgp prefix length of /24 ? William Herrin (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)
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- 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 05)
- Re: maximum ipv4 bgp prefix length of /24 ? Matthew Petach (Oct 05)
- Message not available
- Message not available
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- 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 05)
- Re: maximum ipv4 bgp prefix length of /24 ? William Herrin (Oct 05)
- Re: maximum ipv4 bgp prefix length of /24 ? Delong.com via NANOG (Oct 09)
- Re: maximum ipv4 bgp prefix length of /24 ? Matthew Petach (Oct 09)
- Re: maximum ipv4 bgp prefix length of /24 ? Delong.com via NANOG (Oct 10)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Andrews (Oct 10)
- Re: maximum ipv4 bgp prefix length of /24 ? Delong.com via NANOG (Oct 11)
- Re: maximum ipv4 bgp prefix length of /24 ? Mark Andrews (Oct 11)
- Re: maximum ipv4 bgp prefix length of /24 ? Delong.com via NANOG (Oct 11)