Re:Posters of the IPv4 and IPv6 internet as of Jan 1, 2023
by toast0 on Sunday January 01, 2023 @04:31AM
(#34204957)
> Why does Tesla announce 6x /48s instead of having a /32 of their own and handling their routing internally?
Probably the same reason they annouce /24s and not aggregated prefixes on v4 when they're contiguous. We can't tell from the he bgp tools, and I'm not going to look at other tools, but I'm guessing those /48s are distinct sites and are advertised differently (or maybe one is used as anycast, the others being distinct sites). Theoretically disconnected sites could each have their own AS, but it's very common for an organization to use a single AS globally, and only advertise locally served addresses at each site/BGP session.
Probably the same reason they annouce /24s and not aggregated prefixes on v4 when they're contiguous. We can't tell from the he bgp tools, and I'm not going to look at other tools, but I'm guessing those /48s are distinct sites and are advertised differently (or maybe one is used as anycast, the others being distinct sites). Theoretically disconnected sites could each have their own AS, but it's very common for an organization to use a single AS globally, and only advertise locally served addresses at each site/BGP session.