CN--Correspondent Node. The device that the mobile node (MN) is communicating with, such as a web server. A correspondent node may either be mobile (for example, another mobile node [MN]), or be stationary (for example, a server).
LMA--Local Mobility Anchor. LMA is the home agent for the mobile node (MN) in a PMIPv6 domain. LMA is the topological anchor point for the MN's home network prefix and is the entity that manages the MN's binding state.
MAG--Mobile Access Gateway. MAG is a function on an access router that manages mobility-related signaling for an MN that is attached to its access link. The MAG is responsible for tracking MN movements to and from the access link.
NAI--Network Access Identifier. A NAI is the user identity submitted by the client during network access authentication. When roaming, the purpose of the NAI is to identify the user as well as to assist in the routing of the authentication request. The standard syntax is "user@realm" or as defined in RFC 4282.
MN--Mobile Node. MN is an IP host, an MN, or a router, whose mobility is managed by the network. The MN can be an IPv4-only node, IPv6-only node, or a dual-stack node. The MN is not required to participate in any IP mobility-related signaling for achieving mobility for an IP address that is obtained in that PMIPv6 domain.
PMIPv6 domain--Proxy Mobile IPv6 domain. A network where the mobility management of an MN is handled using the PMIPv6 protocol. The domain consists of network entities, such as MAGs and LMAs, between which Proxy Binding is maintained on behalf of the MNs.
PBU--Proxy Binding Update. PBU is the request message sent by a MAG to an LMA for establishing a binding between an MN's home network prefix and the MAG to which the MN is attached.
PBA--Proxy Binding Acknowledgement. PBU is the reply message from an LMA in response to a PBU from the MAG.