Level3 / Cogent / NetFlix BGP Assistance

Tue Dec 6 13:03:30 UTC 2016

Hi Sam,

As you may have noticed, Netflix no longer uses Cogent as a transit
provider. You will see all of your transit traffic from us traverse Level3.

We are happy to try to work with you to find the best way to deliver your
traffic. Please reach out to peering at netflix.com and the team will try to
help.

Regards,
-Dave

On Sun, Dec 4, 2016 at 9:14 AM, Sam Norris <Sam at sandiegobroadband.com>
wrote:

> Hey all,
>
>
>
> In early October our traffic levels from NetFlix went from about half
> Level3 and
> half Cogent - pretty well balanced - to all on Level3.  Standard
> multihomed BGP
> setup with minimal TE if I can help it.  I am starting to run into
> problems with
> a full gigabit port on Level3 and only 100-200mbps on Cogent at that
> colo.  I
> tried padding, I even tried 65000:2906 bgp community, but it seems like if
> our
> level3 port is up NetFlix chooses it solely.  How can I load balance
> NetFlix
> traffic across my two ports so that I am not paying for overages and/or
> forced
> to up to a 10G port immediately?  I have 3 other providers at that colo and
> cannot find any mix of bgp tricks to get some of it thru our other
> providers.
>
>
>
> I notice AS2906 has a localpref of 86 - odd ...
>
>
>
> The 108.175.47.0/24 block seems to be using as 2906 so I thought a
> 65000:2906
> wouldn't announce those prefixes to them at all.  I have about 10 prefixes
> being
> announced so I could implement a no-export on some of them to load balance
> but
> that doesn't work.
>
>
>
> Thx,
>
> Sam
>
>
>
>
>
> BGP routing table entry for 108.175.47.0/24
>
>
>
> Paths: (2 available, best #1)
>
>   2906
>
>   AS-path translation: { 108.175.47.0/24 }
>
>    ear3.LosAngeles1 (metric 100000)
>
>     Origin IGP, metric 30334, localpref 86, valid, internal, best
>
>     Community: 2906:51081 North_America Lclprf_86 United_States Level3_Peer
> Los_Angeles Level3:10984
>
>     Originator: ear3.LosAngeles1
>
>   2906
>
>   AS-path translation: { 108.175.47.0/24 }
>
>    ear3.LosAngeles1 (metric 100000)
>
>     Origin IGP, metric 30334, localpref 86, valid, internal
>
>     Community: 2906:51081 North_America Lclprf_86 United_States Level3_Peer
> Los_Angeles Level3:10984
>
>     Originator: ear3.LosAngeles1
>
>
>
>
>
>
>
>