Collaboration

The Paths Towards IPv6 Multihoming

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Executive Summary

Multihoming, the practice of connecting to multiple providers, is becoming highly popular. Due to the growth of the BGP routing tables in the Internet, the way to get multihomed in IPv6 is required to allow route aggregation in order to preserve the scalability of the interdomain routing system. After several years of development, the IETF and the research community propose drastic changes in how site multihoming shall be achieved in IPv6. Those changes will potentially affect the fundamental multihoming mechanism, as well as intradomain routing, traffic engineering and even the behaviour of hosts within the multihomed site. This paper presents the required functionalities and the constraints imposed to the solutions to the IPv6 multihoming problem.

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