Issues in candidate access router discovery for seamless IP-level handoffs

Document Type Expired Internet-Draft (seamoby WG)
Authors Dirk Trossen  , Hemant Chaskar  , Govind Krishnamurthi  , James Kempf  , Hemant Chaskar 
Last updated 2015-10-14 (latest revision 2002-10-17)
Stream Internet Engineering Task Force (IETF)
Expired & archived
plain text pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Allison Mankin
IESG note WG declared this document should be scrapped
because CARD direction was changed so much - result of meeting in Vienna.
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Handoff in IP mobility protocols involves moving a mobile node's Layer 3 routing reachability point from one access router to another, before or after the mobile node has established a Layer 2 connection with the radio access point that is covered by the new access router. In addition, other context information about the mobile node's IP service may be transferred from the old access router to the new one, in order to minimize the service disruption during the handoff process. While the exact details of how this is accomplished vary depending on the IP mobility and seamless handoff protocols, one common thread required for IP-level handoffs is discovering the candidate access routers for the mobile node's handoff. Discovering the candidate access router involves identifying its IP address as well as its capabilities that the mobile node might be interested in. At the time of IP-level handoff, if a collection of candidates is identified, an algorithm is run to determine the target access router for the mobile node's handoff. This document describes the problem of candidate access router discovery. The document does not discuss the algorithm by which the actual target access router is selected, nor how the handoff to the target is achieved.


Dirk Trossen (
Hemant Chaskar (
Govind Krishnamurthi (
James Kempf (
Hemant Chaskar (

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