I-D ACTION:draft-ietf-seamoby-context-transfer-problem-stat-04.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Context Transfer, Handoff Candidate Discovery, and Dormant Mode Host Alerting Working Group of the IETF.

	Title		: Problem Description: Reasons For Performing Context 
                          Transfers Between Nodes in an IP Access Network
	Author(s)	: J. Kempf
	Filename	: draft-ietf-seamoby-context-
                          transfer-problem-stat-04.txt
	Pages		: 12
	Date		: 28-Nov-01
	
In IP access networks that support host mobility, the routing paths 
between the host and the network may change frequently and rapidly. 
In some cases, the host may establish certain routing-related 
services on subnets that are left behind when the host moves. 
Examples of such services are AAA, header compression, and QoS. In 
order for the host to obtain those services on the new subnet, the 
host must explicitly re-establish the service by performing the 
necessary signaling flows from scratch. In some cases, this process 
would considerably slow the process of establishing the mobile host 
on the new subnet. An alternative is to transfer information on the 
existing state associated with these services, or context, to the 
new subnet, a process called 'context transfer'. This document 
discusses the desirability of context transfer for facilitating 
seamless IP mobility.

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