On Sep 23, 2013, at 8:10 AM, Simon Leinen <simon.leinen@switch.ch> wrote:
Not necessarily. I think most of the iOS 7 update traffic WAS in fact delivered from CDN servers (in particular Akamai). And many/most large service providers already have Akamai servers in their networks. But they may not have enough spare capacity for such a sudden demand - either in terms of CDN (Akamai) servers or in terms of capacity between their CDN servers and their customers.
Apple claims 200 million[1] IOS devices upgrade to version 7 in the past week. A typical download was on the order of 800MB. At the same time, Apple released some other updates, like OSX 10.8.5[2] (275MB) and XCode 5.0[3] (2GB). They also made the iWork and iLife applications (Pages, Numbers, Keynote iMovie, and iPhoto) free to download[4] for all new IOS purchasers. Oh, and they sold 9 million iPhone 5s/c devices[1], most of which needed an update to IOS 7.0.1[5] which was a 1.2GB download. With all of that going on the grumbling on NANOG has pretty much been limited to "yeah, we saw a spike", and a few providers of alternative technologies (like Satellite) grousing a bit. I'm not saying the industry can't do better, but I'm finding it hard to describe what happened as anything besides a success for CDN's and most consumer facing ISP's. I only hope the various CDN's and ISP's study what happened so they can be prepared for the next event, which will no doubt be bigger. We're all in an "up and to the right" industry. 1: http://9to5mac.com/2013/09/23/apple-announces-9-million-iphone-sales-over-fi... 2: http://support.apple.com/kb/DL1675 3: http://9to5mac.com/2013/09/18/xcode-5-0-released-with-ios-7-sdk-64-bit-app-c... 4: http://9to5mac.com/2013/09/10/apple-makes-iwork-apps-iphoto-and-imovie-free-... 5: http://support.apple.com/kb/DL1683 -- Leo Bicknell - bicknell@ufp.org - CCIE 3440 PGP keys at http://www.ufp.org/~bicknell/