Level3 / Cogent / NetFlix BGP Assistance

Faisal Imtiaz faisal at snappytelecom.net
Sun Dec 4 17:25:38 UTC 2016


Have you considered connecting to the nearest peering exchange ? where you can potentially off-load all of this traffic from your paid IP Transit ?

Faisal Imtiaz
Snappy Internet & Telecom

----- Original Message -----
> From: "Sam Norris" <Sam at SanDiegoBroadband.com>
> To: "nanog list" <nanog at nanog.org>
> Sent: Sunday, December 4, 2016 12:14:57 PM
> Subject: Level3 / Cogent / NetFlix BGP Assistance

> 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


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