[afnog] Four Years Tracking Unrevealed Topological Changes in the African Interdomain

Barrack Otieno otieno.barrack at gmail.com
Mon Apr 3 15:50:18 UTC 2017

Hi Roderick,

Interesting research, the link doesnt open the document can you resend
the correct link?

Best Regards

On 4/3/17, Roderick <roderick.fanou at imdea.org> wrote:
> Dear all,
> We would like to share the url https://authors.elsevier.com/a/1UoaAVwcQSH8w,
> on which are described the results of a scientific study investigating the
> evolution of the Interdomain routing in Africa using the RIPE Atlas
> infrastructure.
> This paper is entitled “Four Years Tracking Unrevealed Topological Changes
> in the African Interdomain”.  It has been published at the Computer
> Communications Journal, which provides a 50 days free access,
> i.e. the manuscript will be freely downloadable by anyone until May 20,
> 2017. After that period, it will need to be purchased.
> Please find below its abstract:
> Abstract
> Despite extensive studies on the Internet topology, little is still known
> about the AS level topology of the African Internet, especially when it
> comes to its IXP substrate. The main reason for this is the lack of vantage
> points that are needed to obtain the proper information. From 2013 to 2016,
> we enhanced the RIPE Atlas measurement infrastructure in the region to shed
> light on both IPv4 and IPv6 topologies interconnecting local ISPs. We
> increased the number of vantage points in Africa by 278.3% and carried out
> measurements between them at random periods. To infer results that depict
> the behavior of ISPs in the region, we propose reproducible traceroute data
> analysis techniques suitable for the treatment of any set of similar
> measurements. We first reveal a large variety of ISP transit habits and
> their dependence on socio-economic factors. We then compare QoS within
> African countries, European countries, and the US to find that West African
> networks in particular need to promote investments in fiber networks and to
> implement traffic engineering techniques. Our results indicate the remaining
> dominance of ISPs based outside Africa for the provision of
> intra-continental paths, but also shed light on traffic localization
> efforts. We map, in our traceroute data, 62.2% of the IXPs in Africa and
> infer their respective peers. Finally, we highlight the launch of new IXPs
> and quantify their impacts on end-to-end connectivity. The study clearly
> demonstrates that to better assess interdomain routing in a continent, it is
> necessary to perform measurements from a diversified range of vantage
> points.
> Keywords
> African internet; IXP substrate; RIPE Atlas; Transit; Traffic localization
> Please feel free to share this mail or the url
> (https://authors.elsevier.com/a/1UoaAVwcQSH8w).
> Comments and questions are welcome.
> Thanks and regards,
> The authors.

Barrack O. Otieno
Skype: barrack.otieno
PGP ID: 0x2611D86A

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