Research : 2009
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Inter-domain forwarding state is growing at a super-linear rate, rendering older routers obsolete and increasing the cost of replacement. A reduction of state will alleviate this problem. In this paper, we outline a new reduced-state inter-domain forwarding mechanism. We carefully drop portions of the advertised forwarding state using a utility measure for prefixes based on the length of the prefix and the path length to its origin. A deterministic forwarding algorithm uses the resulting partial view. The graph of connections between autonomous systems is shallow, offering many viable paths for data flows, a property we aim to use to achieve minimal detrimental effect on delay and AS path stretch.
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23 September 2009 / adaptive-iptv
In our previous project work we a) established an active measurement infrastructure to assess the communication characteristics of cross-provider IPTV paths with different kinds of access networks (cable, ADSL) and carried out a first series of experiments, b) realising an ns-2 simulation environment for IPTV systems (including VQEs) incorporating RTCP- based feedback, FEC, and retransmissions for SSM-based video distribution, and c) performing initial simulations for feedback-based error repair and inference using the characteristics determined by the measurement.
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Welcome to Graham Mooney, who will be doing his MSci project under the supervision of myself and Stephen Strowes. Graham will be working on the simulation of compact routing algorithms, to understand the trade off between performance and complexity for various different compact routing algorithms.
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The 4th Scottish Networking Event will take place on 10 September 2009 in the Department of Electronic and Electrical Engineering at the University of Strathclyde, Glasgow. Refreshments will be available from 1 PM and we aim to have the technical session commence at 1:30 PM. The venue is room R3.45 in the Royal College Building.
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Stephen will be attending the Trilogy project's Future Internet Summer School and presenting some early work on Randomness for Reduced-State Inter-Domain Forwarding.
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The 3rd Scottish Networking Event will will take place on Thursday, 12 March 2009 in the Informatics Forum at the University of Edinburgh. Attendance is free, but please RSVP if you plan to attend, so we can plan logistics. The meeting agenda will run from around 1pm until around 5:00pm, then continuing in the pub and over dinner.