As heterogeneous access technologies have been developed, network node has the ability to simultaneously connect multiple access networks to support reliability, load sharing and mobility. These simultaneous multiple connections are established through multiple accesses to next generation networks (NGNs) using multiple access technologies, multiple network interfaces, multiple Internet Protocol version 6 (IPv6) addresses, and multiple transport sessions. To provide efficient simultaneous multiple connections, it is required to consider impact from/on multiple access technologies, multiple network interfaces, and multiple transport sessions as well. This Recommendation defines vertical multi-homing as multi-homing based on the characteristics of simultaneous multiple connections of several layers and managed vertically across several layers. This Recommendation describes a framework of vertical multi-homing in IPv6-based NGN. This Recommendation describes or defines: Definition of vertical multi-homing; Requirements of vertical multi-homing; Methods of vertical multi-homing; Functional architecture of vertical multi-homing; Applications of vertical multi-homing.
ITU-T Y.2056-2011 history
2011ITU-T Y.2056-2011 (Pre-Published) Framework of Vertical Multi-homing in IPv6-based NGN