Interesting, AS1299 (Arelion/Telia) has made ASPA objects for... AS0 (aka never transit) This is... a bold move. Glad that they will be the lab rat for how well this works in practice for a "transit free carrier", given that in practice it seems that a lot of the transit free carriers are not entirely transit free
one honk maybe more
wolf480pl@mstdn.io
replied 09 Dec 2025 17:21 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3B1C7rzNd1q9cR4T26
@benjojo hmm so an ASPA is a way for an AS to declare that And an ASPA with AS0 means "I do not have upstreams" ?
"These ASes are my upstreams. They, and their (transitive) upstreams are the only ones allowed to announce my routes to their peers or upstreams. Anyone else can only annouce my routes to their customers."
?
benjojo
replied 09 Dec 2025 17:26 +0000
in reply to: https://mstdn.io/users/wolf480pl/statuses/115690761006709717
hisold@toot.io
replied 09 Dec 2025 20:47 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/43zws4llFp3832twfJ
@benjojo @wolf480pl Does this actually impact traffic? If so, I think everyone who thinks they're a tier 1 provider should do this to prove their power.
benjojo
replied 09 Dec 2025 20:48 +0000
in reply to: https://toot.io/users/hisold/statuses/115691568106650339
@hisold @wolf480pl When ASPA enforcement becomes more widespread then doing AS0 will impact traffic, but we are likely 2~ years at least until that happens
benjojo
replied 09 Dec 2025 20:47 +0000
in reply to: https://mastodon.social/users/forst/statuses/115691519117203994
@forst Arelion (1299) and Telia (everything else) have been separated for quite a while now, and ASPA enforcement is basically non existent right now
fionafokus@mystical...
replied 09 Dec 2025 16:52 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3B1C7rzNd1q9cR4T26
@benjojo I guess, as a big network it makes sense to create the objects as early as possible. That way if something breaks it's the implementers problem, not yours.
teunvink@mstdn.socia..
replied 09 Dec 2025 16:56 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3B1C7rzNd1q9cR4T26
@benjojo one could argue that since nearly no production networks are doing ASPA validation yet it’s a decent strategy to spot issues in a relatively small environment. Enabling it later may actually lead to more impact when issues are found. still, I’m not sure if I would do the same, I decided to start with my test ASN (not transit free unfortunately 😉)
teunvink@mstdn.socia..
replied 09 Dec 2025 18:31 +0000
in reply to: https://mstdn.social/users/teunvink/statuses/115690661392669504
