maximum ipv4 bgp prefix length of /24 ?

Thu Oct 5 22:30:25 UTC 2023

On Thu, Oct 5, 2023 at 12:11 PM Owen DeLong via NANOG <nanog at nanog.org> wrote:
> So far, that seems to be largely the case, with more than 50% of ASNs represented in the DFZ in IPv6, we see
> roughly 191884 unique destinations in IPv6 and 942750 unique destinations in IPv4 (admittedly an instantaneous
> snapshot a few moments ago from a single DFZ router, YMMV).

When you realize that an IPv6 address takes 4 times the space as an
IPv4 address that picture isn't so rosy any more. The impact on
critical-path router resources isn't quite 4x of course, but as you
say: only 50% of the ASes are represented.

Regards,
Bill Herrin

-- 
William Herrin
bill at herrin.us
https://bill.herrin.us/