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Tratamento pela periferia de falhas na Internet
MSc Post-Graduation

Internet growth has brought to light a set of limitations, both at an architectural level and at a forwarding level. The protocol used for routing packets on the Internet (Bor- der Gateway Protocol) has problems dealing with the requirements of today’s Internet, which are getting worse, making the time that the system needs to stabilize in case of link failures elevated and difficult to deal with. Adding to these problems, more and more systems are getting access to multiple paths to a certain destination (e.g. multi-homing or more than one interfaces). These multiple paths increases the number of entries in the routing tables, putting at risk the entire packet forwarding system in the Internet. At the same time these multiple paths increases diversity and forwarding alternatives. De- spite the existence of several proposals, in all the architectural levels, that try to solve the existing problems, they end up being to complex to be implemented worldwide. The objective of this work is to find ways to develop distributed applications, in a context which participating computers have access to multiple origin and/or destination IP addresses, in a way that they can use this diversity of paths to bypass eventual for- warding failures and, if possible, using the best path available. The ultimate goal is to use path diversity to our advantage, allowing us to compensate convergence failures and the system capacity to deal with them. This is a solution at the application level which proposes that it is possible to use different pairs of addresses to communicate between each end of the communication. This solution will allow us to develop applications that can explore multiple paths, bypassing forwarding problems and, if possible, increasing connection’s speed.

Start Date: 2011-09-25

End Date: 2012-11-20

Post-Graduation Student / Researcher / Professor:
  • Filipe André Luís Ribeiro de Carvalho ( Departamento de Informática FCT/UNL )

Post-Graduation Supervisor(s):
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