I know all this, it used to be my world as well—in our case the internet
exchanges that were of relevance were in Amsterdam and Frankfurt.
Cheers,
Nathan
Nathan Wajsman
Alicante, Spain
http://www.frozenlight.eu <http://www.frozenlight.eu/>
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YNWA
> On 23 Nov 2018, at 02:14, Ken Norton <ken@xxxxxxxxxxx> wrote:
>
>> I believe you, but the problems seem to be confined to N America.
>
> These days it has less to do with geography than where the ISPs meet
> up with the meetpoints are. And those are constantly changing. I would
> love to give you a specific example, of which I'm rather proud of, but
> I can't. But I'll illustrate by proxy:
>
> Let's say that there is a cable tv company in some obscure coastal
> city in Spain that provides high-speed internet to their customers.
> The headquarters for this company may be located in Barcelona. That's
> where the main servers and routers are located for that company. They
> have two connections to the outside world. One to London, another to
> Frankfurt. That's where they meet up with the "Tier-1" carriers. The
> Tier-1 carriers connect to the Facebook datacenter in Europe with a
> secondary connection to New Jersey.
>
> However, the person living there in that obscure coastal community may
> have a cellphone through a major company. That company has their
> primary router farms in London and Paris. Oh, and in New Jersey,
> Virginia and Miami. This company, has established direct connections
> with not only the Tier-1 carriers, but with some of the content
> providers directly. Including Facebook. However, due to the fact that
> this company is international and has edge routers in multiple
> countries and continents, it has connections to Facebook not only in
> Europe, but in a couple of places in the USA too.
>
> So, what happens is that where you see a normal geographical tree
> structure in a traceroute, (local hick town to bigger city to big city
> to Tier-1 carrier to another big city then to Facebook), you end up
> seeing the route as being on your own provider's network direct to
> Facebook. This connection can be local or it can be countries away.
>
> Where your internet connection to the content provider is usually
> geography-centric, it isn't always so. I know that in our case, we
> literally traverse an entire continent (almost 4000 fiber miles) in
> order to avoid meeting the content providers in the pac-nw. (along
> with, of course). So when the content provider in question has a major
> issue in Seattle, we avoid the problem by directing the traffic to one
> of the data centers on the other side of the country. Serious
> companies, like ours, hit the meet points at three or four
> geographically diverse (not just minimum diversity, but different
> quadrants of the country diverse) locations. This means that you can't
> just say that the problem is affecting xyz portion of the country. The
> problem can be quite international. I've seen hickups when something
> weird happens in Dubai.
>
> AG Schnozz
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