I-D ACTION:draft-williams-l2-probstmt-00.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.


	Title		: Problem Statement for Link-layer Triggers work
	Author(s)	: C. Williams, A. Yegin, J. Kempf
	Filename	: draft-williams-l2-probstmt-00.txt
	Pages		: 
	Date		: 26-Jun-02
	
Much discussion has resulted over the last few years regarding
L2 triggers in wired and wireless scenarios. Recent wireless goals 
have been to collect requirements from various IETF related working 
groups for L2 triggers in wireless environments.  For example, the
Mobile IP and SeaMoby working groups require such L2 information
to optimize handoff. It was the hope that the output of such an 
effort would be used to design an API or protocol if desired.  
A requirements draft [REQ] discusses requirements from the following 
FMIPv6, low latency MIPv4, and SeaMoby context transfer work.  
Discussion over the last several months in the PILC working group 
raises concerns about a generic L2 trigger framework independent if the 
it is for wired-line or wireless application.  The goal of this document 
is to provide a clear problem statement of L2 triggers. Discussion has 
also been documented in this problem statement regarding special needs 
of the wireless application.  For example, the method for communicating
L2 information to L3 may be better suited for the wire-lined case (e.g.,
MIB) but not for the wireless scenario. Finally, recommendations on 
where to go with the L2 trigger area in IETF has been provided. This
draft is preliminary.

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