Transparent Hierarchical Mobility Agents (THEMA)

Document Type Expired Internet-Draft (individual)
Authors Charles Perkins  , Pat Calhoun  , Tom Hiller  , Alessio Casati  , Jin Wang  , Pete McCann 
Last updated 1999-03-01
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


For various reasons it may be desirable to separate the functionality of a mobility agent, such as the home and foreign agents in Mobile IP [Perkins96], from their link-layer presence on a given network. This draft outlines mechanisms based on the Tunnel Establishment Protocol [Calhoun98a] for accomplishing this. The tunnels so established will not be visible to a mobile node and therefore provide a transparent way to build hierarchies of mobility agents, which can lessen the frequency of Mobile IP re- registrations.


Charles Perkins (
Pat Calhoun (
Tom Hiller (
Alessio Casati (
Jin Wang (
Pete McCann (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)