On Mon, Aug 17, 2015 at 1:44 PM, Scott Whyte <swh...@gmail.com> wrote: > > > On 8/15/15 09:47, Glen Kent wrote: >> >> Hi, >> >> Is it fair to say that most traffic drops happen in the access layers, or >> the first and the last miles, and the % of packet drops in the core are >> minimal? So, if the packet has made it past the first mile and has >> "entered" the core then chances are high that the packet will safely get >> across till the exit in the core. Sure once it gets off the core, then all >> bets are off on whether it will get dropped or not. However, the key point >> is that the core usually does not drop too many packets - the probability >> of drops are highest in the access side. > > > What do these terms mean in a world where my EC2 VM talks to my GCE VM? It > doesn't seem unreasonable that the DC bandwidth on either end dwarfs the > "core" capacity between the two.
there's some other work going on: <http://www.bitag.org/documents/BITAG_Press_Release_-_Announcing_Prioritization_and_Differential_Treatment_Topic.pdf> which pokes a bit at this idea of packet drops (from the 'what if I prioritize traffic? or differentiate between traffic types?' perspective). I imagine that a topic of conversation is that: "hey, do we get meaningful drop numbers, or does prioritization/differentiation matter, in the core of a network or only at the network edges?" mostly bitag is focused on 'consumer' edges, so they may not look at 'inside a a datacenter' problems.
