Foreign Agent Assisted Hand-off

Document Type Expired Internet-Draft (individual)
Last updated 2000-11-28
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Mobile IP protocol allows a Mobile Node to continue using the same home address even after changing its point of attachment to the Internet. This provides transparency to most existing applications that assume a fixed address and a fixed point of attachment. However, new applications, such as voice-over-IP, have additional real-time requirements such that a change in the point of attachment will cause a noticeable degradation of service unless additional steps are taken to reduce the latency of a handoff event. This specification proposes extensions to the Mobile IP protocol that may be used by Foreign Agents to set up a Mobile Node's visitor entry, and forward its packets, prior to receiving a formal Registration Request from the Mobile Node. This enables a very rapid establishment of service at the new point of attachment so that the effect of the handoff on real-time applications is minimized.


Ajoy Singh (
James Kempf (
Pete McCann (
Tom Hiller (
Chandana Pairla (
Sebastian Thalanany (
Pat Calhoun (

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