Hi Geoff,
> The same has been going on in IPv6. The 50 noisiest prefixes (and a whole
> bunch of them originate in Akamai) generate a whopping 34% of the total IPv6
> update load, and the
> noisiest 50 Origin AS's generate an even more impressive 74% of the total
> IpPv6 update load. Akamai's AS 36813 generated 27% of total IPv6 update load
> over the past 14 days.
Thanks that confirms what we see. If there is someone here from AS36183 I guess
it is something worth looking at.
Romain
________________________________________
From: Geoff Huston <gih...@gmail.com>
Sent: Sunday, February 9, 2025 14:41
To: [IIJ] Fontugne Romain
Cc: NANOG
Subject: Re: Noisy prefixes in BGP
Hi Romain
We are seeing in RIS data a constant flow of update messages from a few ASes,
here is the list of the top prefixes:
┌─────────────────────┬────────────┬──────────────┐
│ prefix │ origin_asn │ num_announce │
│ varchar │ varchar │ int64 │
├─────────────────────┼────────────┼──────────────┤
│ 169.145.140.0/23 │ 6979 │ 843376 │
│ 2a03:eec0:3212::/48 │ 22616 │ 435608 │
│ 172.224.198.0/24 │ 36183 │ 380117 │
│ 172.226.208.0/24 │ 36183 │ 374040 │
│ 172.226.148.0/24 │ 36183 │ 367083 │
You might also want to check out these two update reports:
https://www.potaroo.net/bgpupds/reports/bgpupd.html
and
https://www.potaroo.net/bgpupds/reports/v6-bgpupd.html
These reports have been going on for a couple of decades now. It operates over
a rolling 14 day window.
Over the last 14 days in IPv4 the noisiest 50 prefixes generate 5% of the total
update load, The 50 noisiest Origin AS's generate 24% of the total 14-day BGP
update load
The same has been going on in IPv6. The 50 noisiest prefixes (and a whole bunch
of them originate in Akamai) generate a whopping 34% of the total IPv6 update
load, and the noisiest 50 Origin AS's generate an even more impressive 74% of
the total IpPv6 update load. Akamai's AS 36813 generated 27% of total IPv6
update load over the past 14 days.
(There are 40,300 30 second MRAI intervals in a 14 day period so when a prefix
is being updated 33,000 times in 145 days its basically being updated as fast
as many BGP implementations will let you!)
Geoff
