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A new path probing strategy for inter-domain multicast routing

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4 Author(s)
Costa, A. ; Departamento de Informatica, Univ. do Minho, Braga, Portugal ; Nicolau, M.J. ; Santos, A. ; Freitas, V.

Many already in use applications require the provision of QoS services from the underlying network infra-structure. This is particularly true for multicast, since it involves many participants at very sparse locations usually aiming to receive or send multimedia real-time streams. One way to provide QoS is through routing, since QoS aware multicast routing protocols can find feasible multicast trees. In this paper an inter-domain QoS multicast routing protocol is presented, specifically designed for the hierarchical inter-domain scenario, where requirements like intra-domain independency and policy awareness should be met. Emphasis is given to the path probing mechanism used to connect new members to the multicast tree, stressing how it differs from others. Simulation results show that despite using a less aggressive and simplified probing mechanism-more suitable for inter-domain scenarios-the proposed routing strategy can build multicast trees with metrics similar to those build by more aggressive techniques, with considerable less effort.

Published in:

Next Generation Internet Networks, 2005

Date of Conference:

18-20 April 2005

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