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RFC7333 - Requirements for Distributed Mobility Management
This document defines the requirements for Distributed Mobility Management (DMM) at the network layer. The hierarchical structure in traditional wireless networks has led primarily to centrally deployed mobility anchors. As some wireless networks are evolving away from the hierarchical structure, it can be useful to have a distributed model for mobility management in which traffic does not need to traverse centrally deployed mobility anchors far from the optimal route. The motivation and the problems addressed by each requirement are also described.
RFC7429 - Distributed Mobility Management: Current Practices and Gap Analysis
This document analyzes deployment practices of existing IP mobility protocols in a distributed mobility management environment. It then identifies existing limitations when compared to the requirements defined for a distributed mobility management solution.
RFC8127 - Mobile Access Gateway Configuration Parameters Controlled by the Local Mobility Anchor
This specification defines a new extension, LMA-Controlled-MAG-Session-Params, to Proxy Mobile IPv6. This option can be used by the local mobility anchor (LMA) in a Proxy Mobile IPv6 domain for signaling a mobile access gateway (MAG) on enforcing specific values for various configuration parameters such as heartbeat and binding refresh parameters.
RFC8191 - Home Network Prefix Renumbering in Proxy Mobile IPv6 (PMIPv6)
In the basic Proxy Mobile IPv6 (PMIPv6) specification, a Mobile Node (MN) is assigned with a Home Network Prefix (HNP) during its initial attachment, and the MN configures its Home Address (HoA) with the HNP. During the movement of the MN, the HNP remains unchanged to keep ongoing communications associated with the HoA. However, the current PMIPv6 specification does not specify related operations when HNP renumbering has occurred (e.g., due to change of service provider or site topology, etc.). In this document, a solution to support HNP renumbering is proposed, as an optional extension of the PMIPv6 specification.
RFC8278 - Mobile Access Gateway (MAG) Multipath Options
This specification defines extensions to the Proxy Mobile IPv6 (PMIPv6) protocol that allow a mobile access gateway (MAG) to register more than one proxy care-of address (pCoA) with the local mobility anchor (LMA) and to simultaneously establish multiple IP tunnels with the LMA. This capability allows the MAG to utilize all the available access networks to route the mobile node's IP traffic. This document defines the following two new mobility header options: the MAG Multipath Binding option and the MAG Identifier option.
RFC8371 - Mobile Node Identifier Types for MIPv6
This document defines additional identifier type numbers for use with the mobile node identifier option for Mobile IPv6 (MIPv6) as defined by RFC 4283.
RFC8653 - On-Demand Mobility Management
Applications differ with respect to whether they need session continuity and/or IP address reachability. The network providing the same type of service to any mobile host and any application running on the host yields inefficiencies, as described in RFC 7333. This document defines a new concept of enabling applications to influence the network's mobility services (session continuity and/or IP address reachability) on a per-socket basis, and suggests extensions to the networking stack's API to accommodate this concept.
RFC8818 - Distributed Mobility Anchoring
This document defines distributed mobility anchoring in terms of the different configurations and functions to provide IP mobility support. A network may be configured with distributed mobility anchoring functions for both network-based or host-based mobility support, depending on the network's needs. In a distributed mobility anchoring environment, multiple anchors are available for mid-session switching of an IP prefix anchor. To start a new flow or to handle a flow not requiring IP session continuity as a mobile node moves to a new network, the flow can be started or restarted using an IP address configured from the new IP prefix anchored to the new network. If the flow needs to survive the change of network, there are solutions that can be used to enable IP address mobility. This document describes different anchoring approaches, depending on the IP mobility needs, and how this IP address mobility is handled by the network.
RFC8885 - Proxy Mobile IPv6 Extensions for Distributed Mobility Management
Distributed Mobility Management solutions allow networks to be set up in such a way that traffic is distributed optimally and centrally deployed anchors are not relied upon to provide IP mobility support.
There are many different approaches to address Distributed Mobility Management -- for example, extending network-based mobility protocols (like Proxy Mobile IPv6) or client-based mobility protocols (like 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 the mobility anchor and access router). The mobility anchor and access router is an enhanced access router that is also able to operate as a local mobility anchor or mobility access gateway on a per-prefix basis. The document focuses on the required extensions to effectively support the simultaneous anchoring several flows at different distributed gateways.