Just so I am clear, you are saying “I would rather have it come over my undersea cables than from inside the datacenter”?
And you are assuming TCP transport. -- TTFN, patrick > On Apr 1, 2021, at 6:23 PM, Tony Wicks <[email protected]> wrote: > > This is not actually (as in yes it does matter) the case, if a file comes > from a CDN it is often a close and low latency source that will run up to > very high speeds. For example in our case we connect to local peering > exchanges (or PNI’s/local caches) at 100G or Nx10G with latency to the end > user in the 1-30ms range resulting in very large peaks of local backhaul > traffic. If a file is delivers from source or from remote CDN’s/exchanges > these are located in other countries with between 25ms (New Zealand to > Australia) and 130-200ms (New Zealand to LA/SJC or Singapore) latency, this > results in a much slower and normally barely noticeable traffic blip. Yes as > an ISP we need to carry the traffic in both cases but the first case can > result in a 20-30% local backhaul increase for a couple of hours and in the > second case its just BAU traffic for a day or two. Local CDN is obviously the > better option for cost and the consumer, but you certainly do notice the > traffic in local backhaul. > > From: NANOG <[email protected] > <mailto:[email protected]>> On Behalf Of Tom Beecher > Sent: Friday, 2 April 2021 10:05 am > To: Matt Erculiani <[email protected] <mailto:[email protected]>> > Cc: North American Operators' Group <[email protected] <mailto:[email protected]>> > Subject: Re: wow, lots of akamai > > > If thousands of users are downloading 50G files at the same time, it really > doesn't matter if they are pulling from a CDN or the origin directly. The > volume of traffic still has to be handled. Yes, it's a burden on the ISP, but > it's a burden created by the usage created by their subscribers.
