nanog mailing list archives
Re: iOS 7 update traffic
From: Carsten Bormann <cabo () tzi org>
Date: Mon, 23 Sep 2013 15:50:30 +0200
On Sep 23, 2013, at 15:10, Simon Leinen <simon.leinen () switch ch> wrote:
Glen Kent writes:One of the earlier posts seems to suggest that if iOS updates were cached on the ISPs CDN server then the traffic would have been manageable since everybody would only contact the local sever to get the image. Is this assumption correct?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.
I have some anecdotal evidence that a large swatch of Telekom land in Germany was fed from two (2) Limelight servers in Frankfurt (?). Of course, packet loss to them during Wednesday evening was around 50 %. (I VPNed out of Telekom land to get my iOS 7 update, which was then no problem at all; that clearly shows that the access infrastructure wasn't overloaded.) It doesn't help that Apple's update software has no way to make use of the results of a prematurely aborted transfer; this is a recipe for bistable behavior. Grüße, Carsten
Current thread:
- Re: iOS 7 update traffic, (continued)
- Re: iOS 7 update traffic Valdis . Kletnieks (Sep 19)
- RE: iOS 7 update traffic Keith Medcalf (Sep 19)
- Re: iOS 7 update traffic joel jaeggli (Sep 19)
- Re: iOS 7 update traffic Colin Alston (Sep 22)
- Re: iOS 7 update traffic John Smith (Sep 23)
- Re: iOS 7 update traffic Neil Harris (Sep 23)
- Re: iOS 7 update traffic Glen Kent (Sep 23)
- Re: iOS 7 update traffic Simon Leinen (Sep 23)
- Re: iOS 7 update traffic Leo Bicknell (Sep 23)
- Re: iOS 7 update traffic Joe Abley (Sep 23)
- Re: iOS 7 update traffic Carsten Bormann (Sep 23)
- Re: iOS 7 update traffic Ralph J.Mayer (Sep 23)
- Re: iOS 7 update traffic Glen Kent (Sep 23)
- Re: iOS 7 update traffic Jared Mauch (Sep 23)
- Re: iOS 7 update traffic Jeroen Massar (Sep 23)
- Re: iOS 7 update traffic Joe Abley (Sep 23)
- Re: iOS 7 update traffic Blake Dunlap (Sep 23)
- Re: iOS 7 update traffic Octavio Alvarez (Sep 23)
- Re: iOS 7 update traffic Joe Greco (Sep 23)
- Re: iOS 7 update traffic Jeff Kell (Sep 23)
- Re: iOS 7 update traffic Randy Bush (Sep 23)