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

Roderick roderick.fanou at imdea.org
Mon Apr 3 16:02:39 UTC 2017

Hello Barrack, 

Here is the URL

> https://authors.elsevier.com/a/1UoaAVwcQSH8w

On the second line of the corresponding webpage (before the “Export" option), you can download the PDF version if you prefer. 

Kind regards, 


On 03 Apr 2017, at 17:50, Barrack Otieno <otieno.barrack at gmail.com> wrote:

> 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
> +254721325277
> +254733206359
> Skype: barrack.otieno
> PGP ID: 0x2611D86A

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