Distributed Mobility Management solutions allow for setting up
networks so that traffic is distributed in an optimal way and does
not rely on centralized deployed anchors to provide IP mobility
There are many different approaches to address Distributed Mobility
Management, as for example extending network-based mobility protocols
(like Proxy Mobile IPv6), or client-based mobility protocols (as
Mobile IPv6), among others. This document follows the former
approach, and proposes a solution based on Proxy Mobile IPv6 in which
mobility sessions are anchored at the last IP hop router (called
distributed gateway). The distributed gateway is an enhanced access
router which is also able to operate as local mobility anchor or
mobility access gateway, on a per prefix basis. The draft focuses on
the required extensions to effectively support simultaneously
anchoring several flows at different distributed gateways.
This draft introduces the concept of distributed logical interface
(at the distributed gateway), which is a software construct that
allows to easily hide the change of anchor from the mobile node.
Additionally, the draft describes how to provide session continuity
in inter-domain scenarios in which dynamic tunneling or signaling
between distributed gateways from different operators is not allowed.