<div dir="ltr"><div>Hi,<br><br></div><div>Observed same problem both on our regional IX and national.<br><br></div><div>Mark, may be you can explain this scenario;Here a provider advertises the de-aggregates alright but not all of them and not the aggregate. I know the provider has not only one /20 but only advertises 2 0r 3 /24s.<br>
</div><div>And the same provider offer hosting services to local clients which are not within the prefixes they advertise to IXs. What reason could they have to do this?<br><br></div><div>Regards,<br></div><div class="gmail_extra">
<br clear="all"><div><div dir="ltr">-- <div>Miku</div></div></div>
<br><br><div class="gmail_quote">On Wed, May 14, 2014 at 11:19 AM, Mark Tinka <span dir="ltr"><<a href="mailto:mark.tinka@seacom.mu" target="_blank">mark.tinka@seacom.mu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">On Wednesday, May 14, 2014 09:46:21 AM Andrew Alston wrote:<br>
<br>
> Anyone who doubts there is local content, I might point<br>
> out that as of 10 minutes ago, I'm looking at traffic<br>
> graphs that are showing hundreds of megabits a second of<br>
> traffic flowing between African countries where we HAVE<br>
> managed to make this work, though it could be a lot<br>
> higher if the routing was just sane!<br>
<br>
</div>This is a good point to make because CDN providers who have<br>
deployed caches on-continent in partnership with African<br>
providers test for, inter alia, latency.<br>
<br>
If a customer (or peer) has a local connection to an African<br>
ISP that hosts a CDN cache and also has a private<br>
international link to Europe; with some inconsistent routing<br>
thrown in in favour of the European link, the customer (or<br>
peer) will end up not using the local CDN cache because the<br>
CDN provider's latency test will return 125ms Africa to<br>
London vs. 130ms Africa to Africa.<br>
<br>
So the customer (or peer) ends up using the CDN provider's<br>
cache located in London, and yet there is a cache just<br>
literally down the road from their nearest PoP.<br>
<br>
This is a reality, and is not a good position to be in for<br>
a continent that badly needs to reduce the amount of traffic<br>
it ships off the land mass.<br>
<span class="HOEnZb"><font color="#888888"><br>
Mark.<br>
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