A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : A Taxonomy and Analysis of Enhancements to Mobile IPv6 Route Optimization
Author(s) : J. Arkko, C. Vogt
Filename : draft-irtf-mobopts-ro-enhancements-00.txt
Pages : 51
Date : 2005-1-27
The Mobile IPv6 protocol favors sending packets via the minimum
routing path between a mobile node and its correspondent node over
sending them through a home agent. This feature is called route
optimization. Route optimization requires authentication and
authorization of initially unacquainted and untrusted parties--a
requirement that was rather new to the Internet community at the time
Mobile IPv6 was designed. To solve the problem, the so-called
return-routability procedure was built into Mobile IPv6. It lets the
mobile node retrieve from the correspondent node two cryptographic
tokens, which the mobile node can use to authenticate itself and
prove its presence at a claimed new location after movement.
Recently, a number of improvements or optional alternatives have been
suggested to the standard procedure. Many of these improvements
attempt further reduction of signaling messages and latency, but
other improvements such as better security have also been suggested.
This paper summarizes the goals for enhancements to
route-optimization, discusses the security threats that such
enhancements must consider, and categorizes the techniques that one
can use for optimization. The paper highlights the key ideas of
various recent proposals, and it evaluates the performance gain that
such proposals can yield. It also discusses how significant
enhancements to Mobile IPv6 are compared to ongoing optimization work
in other parts of the network stack. Finally, the paper identifies
needs for additional research.
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