Thanks Aaron!
Romain
________________________________
From: Block, Aaron
Sent: Monday, February 10, 2025 03:58
To: [IIJ] Fontugne Romain
Cc: Geoff Huston; NANOG
Subject: Re: [nanog] Noisy prefixes in BGP
Hello,
We are looking into this issue.
Thank you,
Aaron Block
---
Aaron Block Akamai Technologies
[email protected] GPG KeyID: 0xD098B69F Senior Principal Network Engineer
Voice: +1-617-444-2892 as20940
> On Feb 9, 2025, at 1:56 AM, Romain Fontugne via NANOG <[email protected]> wrote:
>
> 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 <[email protected]>
> 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://urldefense.com/v3/__https://www.potaroo.net/bgpupds/reports/bgpupd.html__;!!GjvTz_vk!SD6KJxNhU4aKiWpcXriRDtauGeg5dxFRdkfMVwBPbE88V6WbzJIGdnpOXaK6Aashuw4KDnAHuQ$
>
> and
>
>
> https://urldefense.com/v3/__https://www.potaroo.net/bgpupds/reports/v6-bgpupd.html__;!!GjvTz_vk!SD6KJxNhU4aKiWpcXriRDtauGeg5dxFRdkfMVwBPbE88V6WbzJIGdnpOXaK6Aashuw4TrhLPtg$
>
> 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
>
>
>
>
