[AusNOG] Google's Route Preference
gavin.tweedie at megaport.com
Tue Sep 12 10:04:37 EST 2017
I think it's simply a case of what is transit to you may well be peering to
Agreed the best way to configure is bilateral with the big guys
(Google/MSFT/...) at any and all IXs you are both on.
On Tue, Sep 12, 2017 at 7:58 AM, Joseph Goldman <joe at apcs.com.au> wrote:
> Hi Team,
> After Megaport's hiccup yesterday, I discovered my Google traffic coming
> in via my transit rather than alternate peering fabric.
> We bi-lat peer with Google over Megaport IX, but not over other peering
> fabrics, but common sense told me that without bi-lat, it should still use
> the Route Server routes and come in via alternate peering, I was wrong!
> Google support confirmed the following preferences:
> "Google generally serves traffic from edge nodes (GGC) preferentially,
> then direct peering, then via indirect paths (your transit such as xxxx and
> xxxx), and Route servers to be the least preferred"
> Now, its their network and they can prefer what they want to prefer, what
> I am interested in though is maybe an understanding why?
> Why would route server routes be less preferred than transit?
> In any case my easy solution is to set up bi-lat via all peering fabrics,
> just caught me off guard and goes against what I would think is common
> sense routing.
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