You're right on and most of us don't monitor for shifts between direct peering and transit very well. we monitor for bw threshold.
Paul Bradford Lead Network Engineer AS11776 C: 814-203-0699 E: pbradf...@breezeline.com Breezeline.com 2875 Rt 764 Suite 2, Duncansville, PA 16635 On Tue, Jul 23, 2024 at 11:23 AM Mark Tinka <mark@tinka.africa> wrote: > > > On 7/23/24 16:15, Bryan Holloway wrote: > > > What irks me is that we have direct PNIs with -- without naming names > > -- the "big guys" delivering this content, and yet the majority of > > this traffic is coming over our public IX connections and transit. > > > > Kinda defeats the purpose of a PNI ... anyone else seeing this? > > This issue is fairly common because more network is deployed in > centralized locations that most people can access (like a large city > data centre, e.t.c.), as well as for on-net caches. This is what leads > to exchange point and PNI de-preference switching over to what an > eyeball network may consider "transit". > > For the CDN and content folk, exchange point peering (whether PNI or via > the exchange point fabric) is often under-spec'd by consequence, not by > choice. So when clusters or the network feeding them suffers, they tend > to be the first ones to be de-preferred for serving eyeballs. It happens > a lot more often than you may realize, actually, and is not unique to > any one CDN or content network. > > Mark. >
