[Nets-seminars] Talks today in UCL Electronic Engineering

[Richard G. Clegg]

We have two networks talks today in UCL Electronic Engineering. At 15:15 
in GS/102 and directly followed by another at 16:00 in the same room.

At 16:00 we have our invited speaker Arjuna Sathiaseelan from Cambridge

Lowest Cost Denominator Networking (LCDNet)

Abstract: The UK Government’s current efforts to address digital 
inclusion have focused primarily on £530m to subsidise industry 
deployment of both ‘superfast’ broadband (predominantly to urban areas), 
and ‘standard’ broadband (mainly to rural locations). This approach is 
predicated on a desire to support new digital economy services through 
improvements in access speed, while simultaneously ensuring basic levels 
of access for all. Crucially, this approach addresses infrastructural 
barriers without addressing economic ones. I believe that leaving 
connectivity for all to be governed by market economics is a major 
impediment to achieving the full benefits of the digital economy, and 
that basic Internet access should be made freely available to all due to 
its societal benefits. I will talk about the Lowest Cost Denominator 
Networking (LCDNet) initiative at Cambridge which is aimed exactly at 
solving the problem by developing technology to enable free Internet 
connectivity to access essential services, paving the way to new access 
models. My talk will also provide some insights into the ongoing Public 
Access WiFi Service (PAWS) project (www.publicaccesswifi.org).

----

At 15:15 Vasileios Giotsas (UCL EE) will rehearse his CoNEXT talk. This 
is a 25 minute presentation but followed by suggestions and feedback 
about the presentation for those who wish to do so.

Title:
Inferring Multilateral Peering

Abstract:
The AS topology incompleteness problem is derived from difficulties in 
the discovery of p2p links, and is amplified by the increasing 
popularity of Internet eXchange Points (IXPs) to support peering 
interconnection. We describe,
implement, and validate a method for discovering currently invisible IXP 
peering links by mining BGP communities used by IXP route servers to 
implement multilateral peering (MLP), including communities that signal 
the intent to restrict announcements to a subset of participants at a 
given IXP. Using route server data juxtaposed with a mapping of BGP 
community values, we can infer 206K p2p links from 13 large European 
IXPs, four times more p2p links than
what is directly observable in public BGP data. The advantages of the 
proposed technique are threefold. First, it utilizes existing BGP data 
sources and does not require the deployment of additional vantage points 
nor the acquisition
of private data. Second, it requires only a few active queries, 
facilitating repeatability of the measurements. Finally, it offers a new 
source of data regarding the dense establishment of MLP at IXPs.

-- 
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/