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nec (network cartographer)
Keywords :
Internet router level topology mapping.
Abstract :
The study of the Internet topology allows us to discover
properties that can be beneficial to the performances of network
protocols and applications. Thus, Internet mapping is very useful
to simulation software focusing on network protocols.
Unfortunately Internet mapping has two major drawbacks. First it
takes a lot of time to be carried out and second it is often
incomplete. To solve these two problems, we have developed a fast
mapping software whose aim is to map the heart of the IPv4/IPv6
Internet as fast as possible with the highest attainable precision.
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libssmsdp (Any Source Multicast over Source Specific Multicast networks)
Keywords :
Multisource multicast SSM ASM.
Abstract :
The Single Source Multicast (SSM) model has received considerable
attention from the research community as it could finally bring a
scalable solution for some multicast applications. In the SSM
model it is the responsibility of the applications to tell the
network what are their sources of interest. As a consequence, the
SSM model is well suited for one to many multicast applications
(such as TV and radio streaming) because there is only one source
to discover and it is supposed to be well known. However there
still does not exist an SSM session layer protocol and middleware
in order to help Any Source Multicast (ASM) applications to
discover the presence or departure of the SSM sources. In this
paper, we propose a detailed architecture for such a source discovery
session layer protocol. We have implemented our protocol as a
middleware called Libemu and freely available as an open source
library.
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Multicast routing protocols state scalability
Keywords :
Scalability, state, Multicast topology multiple shortests paths, interdomain
Abstract :
The lack of resources in network devices such as routers will become a crucial issue with the deployment of state storing protocols. In particular, single or any source multicast protocols will most probably take over resources up to their limits for maintaining multicast tree information.
The aim of this project is to study the possibility and benefit of using multiple shortest paths in order for a new member to reach a multicast tree.
The idea is to use an alternate shortest
path provided by the underlying unicast routing protocol to avoid a saturated router, that is a router that can not store any more information.
As the simulation results are very sensitive to the topology used, we have created a mapping software to collect an accurate map of the public Internet core and
implemented various simulation scenario to evaluate the trade-offs between the
proposed solutions and their complexity of deployment.
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Vrouter
(Routers Virtualization on multi-core PCs)
Keywords : Virtual Routers Multi-core PCs
Abstract:
Virtualization is a research theme that developped during several decades of research in computing
in fields as diverse as memory management, private networks or virtual machines. History tells us
that a typical usage of virtualization is to share a scarse ressource, but once the virtualization
function is available, the extended flexibility that it offers allow us to imagine innovations that
wouldn't have been possible before. The goals of this research work is to find the principles
related to the design of a virtual router platform. The central hypothesis of this work is this: as
the performances of the PC architecture keep increasing it becomes reasonnable (with a carefully
design virtual router architecture) to support several virtual routers on a single machine.
This research aim to build a virtual routing platform that shows the best possible properties of isolation,
performances and flexibility.
