RT Conference Proceedings T1 Preserving Established Communications in IPv6 Multi-homed Sites with MEX A1 Bagnulo Braun, Marcelo Gabriel A1 García-Martínez, Alberto A1 Soto Campos, Ignacio A1 Azcorra Saloña, Arturo A1 Rodríguez, Juan. F. AB A proper support for multimedia communications transport has to provide fault tolerance capabilities such as the preservation of established connections in case of failures. While multi-homing addresses this issue, the currently available solution based in massive BGP route injection presents serious scalability limitations, since it contributes to the exponential growth of the BGP table size. Alternative solutions proposed for IPv6 fail to provide equivalent facilities to the current BGP based solution. In this paper we present MEX (Muti-homing through EXtension header) a novel proposal for the provision of IPv6 multi-homing capabilities. MEX preserves overall scalability by storing alternative route information in end-hosts while at the same time reduces packet loss by allowing routers to re-route in-course packets. This behavior is enabled by conveying alternative route information within packets inside a newly defined Extension Header. The resulting system provides fault tolerance capabilities and preserves scalability, while the incurred costs, namely deployment and packet overhead, are only imposed to those that benefit from it. An implementation of the MEX host and router components is also presented. PB Springer Verlag SN 978-3-540-20534-0 SN 0302-9743 (Print) SN 1611-3349 (Online) YR 2003 FD 2003-11 LK https://hdl.handle.net/10016/2790 UL https://hdl.handle.net/10016/2790 LA eng NO This research was supported by the SAM (Advanced Mobility Services) project, funded bythe Spanish National R&D Programme under contract MCYT TIC2002-04531-C04-03. DS e-Archivo RD 4 may. 2024