Shared cache servers on an island's IXP

Thu Jan 18 19:25:12 UTC 2024

Hi Nick,

Thanks for your remarks. It's actually an ongoing discussion.

Le 18/01/2024 à 18:24, Nick Hilliard a écrit :
> two issues here: the smaller issue is that CDNs sometimes want their own 
> routable IP address blocks, especially if they're connecting directly to 
> the IXP, which usually means /24 in practice. It doesn't always happen, 
> and sometimes the CDN is happy to use provider address space (i.e. IXP), 
> or smaller address blocks. But it's something to note.

I'd rather have CDN use some of their anycast /24 to peer with the IX, 
with a back-end connectivity for their control-plane and back-feeding.

> The bigger issue is: who pays the transit costs for the CDN's cache-fill 
> requirements? CDNs typically won't pay for cache-fill for installations 
> like this, and if one local ISP is pulling disproportionate quantities 
> of data compared to other ISPs at the IXP, then this can cause problems 
> unless there's an shared billing mechanism built in.

We're willing to provide a dedicated LAN, with routed access, to fill 
caches and administer the machines. It would be fully dissociated from 
the IXP though, unless we could find a way to make it work and as to 
meet extra requirements upon redundancy.

Best regards,

-- 
Jérôme Nicolle
+33 6 19 31 27 14