[afnog] How to convince providers to take the sane option....

[Mark Tinka]

On Wednesday, May 14, 2014 09:46:21 AM Andrew Alston wrote:

> Anyone who doubts there is local content, I might point
> out that as of 10 minutes ago, I'm looking at traffic
> graphs that are showing hundreds of megabits a second of
> traffic flowing between African countries where we HAVE
> managed to make this work, though it could be a lot
> higher if the routing was just sane!

This is a good point to make because CDN providers who have 
deployed caches on-continent in partnership with African 
providers test for, inter alia, latency.

If a customer (or peer) has a local connection to an African 
ISP that hosts a CDN cache and also has a private 
international link to Europe; with some inconsistent routing 
thrown in in favour of the European link, the customer (or 
peer) will end up not using the local CDN cache because the 
CDN provider's latency test will return 125ms Africa to 
London vs. 130ms Africa to Africa.

So the customer (or peer) ends up using the CDN provider's 
cache located in London, and yet there is a cache just 
literally down the road from their nearest PoP.

This is a reality, and is not a good position to be in for  
a continent that badly needs to reduce the amount of traffic 
it ships off the land mass.

Mark.
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