[TriLUG] Is TWC throttling CDN traffic (youtube/amazonprime/netflix) ?

[Brian Weaver]

I think this thread might be blaming the wrong company, granted there's no
love lost between me and TWC. However a 'whois' search on the two network
blocks doesn't show them owned by TWC. One is owned by Google and the one
referenced here is owned by XO Communications. XO might be a subsidiary of
TWC but that's not readily apparent.

On Wed, Mar 20, 2013 at 9:38 PM, Aaron Joyner <aaron at joyner.ws> wrote:

> To clarify, I have no insight into the inner workings of TWTC's
> networks, nor about the specifics of those YouTube cache hostnames or
> IPs, but I'll posit the following explanation, based on a firm belief
> in Hanlon's razor:
>
> If the natural route from TWTC to YouTube traverses the network path
> TW->Foo->YouTubeCache1, you can imagine two things.  TW is likely to
> have some conflicted incentives about upgrading their connection to
> Foo, as it will have a follow-on effect on the bandwidth use in the
> rest of their network.  They don't have to necessarily throttle
> traffic to YouTube explicitly, it "just happens" implicitly if the the
> link to Foo (and indirectly, YouTube) is under-provisioned.
>
> If you deny traffic to Foo, and the YouTube client is smart enough to
> find TW->Bar->YouTubeCache2, you might well get a markedly better
> experience than the average TW customer, in particular at certain
> times of day (eg. peak YouTube).  You might also find unexpected
> problems, like Bar might be the network link that's the shortest path
> to some other popular service (<insert amusing speculation here>), so
> it gets swamped at some other time of day.
>
> Aaron S. Joyner
>
>
> On Wed, Mar 20, 2013 at 8:45 PM, Scott Miller <scottlinux at gmail.com>
> wrote:
> > Here's an example:
> >
> > o-o---preferred---sn-mv-p5qe---v17---lscache1.c.youtube.com
> >
> > Sometimes it's a 206.111.9.x like this:
> >
> > 206.111.9.12
> >
> > Other times a 173.194.58.x ip:
> >
> > $ host o-o---preferred---sn-mv-p5qe---v17---lscache1.c.youtube.com
> > o-o---preferred---sn-mv-p5qe---v17---lscache1.c.youtube.com is an
> > alias for o-o.preferred.sn-mv-p5qe.v17.lscache1.c.youtube.com.
> > o-o.preferred.sn-mv-p5qe.v17.lscache1.c.youtube.com has address
> 173.194.58.212
> > o-o.preferred.sn-mv-p5qe.v17.lscache1.c.youtube.com has IPv6 address
> > 2404:6800:4008:2::d
> >
> >
> > Here is that reddit thread:
> >
> >
> http://www.reddit.com/r/technology/comments/13kmvd/have_time_warner_internet_but_can_barely_stream/c74vk39
> >
> >
> > On Wed, Mar 20, 2013 at 1:48 PM, Aaron Joyner <aaron at joyner.ws> wrote:
> >> For my curiosity, can someone with an example of a slow or poor
> >> YouTube experience provide the actual IP that they're streaming video
> >> from?  In particular, something more specific than a /16.
> >>
> >> On Wed, Mar 20, 2013 at 12:35 PM, Randy Barlow
> >> <randy at electronsweatshop.com> wrote:
> >>> On Wed, 20 Mar 2013 11:07:14 -0400
> >>> Igor Partola <igor at igorpartola.com> wrote:
> >>>> I have not been seeing any issues. Then again, I have been accessing
> >>>> YouTube over IPv6 and I don't think TWC knows what that is :)
> >>>
> >>> I too use an HE tunnel, but somehow the YouTube videos seem to be using
> >>> a hostname that doesn't have an AAAA record, and so my video traffic is
> >>> going to one of the sad throttling servers.
> >>>
> >>> I've done an anecdotal polling of my friends who use HE, and most of
> >>> them do not have this happen to them, but one other friend does.
> >>>
> >>> I've also tried blocking various IP ranges to no avail.
> >>>
> >>> --
> >>> R
> >>> --
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