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I-D ACTION:draft-ietf-nsis-fw-03.txt



A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Next Steps in Signaling Working Group of the IETF.

	Title		: Next Steps in Signaling: Framework
	Author(s)	: R. Hancock et al.
	Filename	: draft-ietf-nsis-fw-03.txt
	Pages		: 45
	Date		: 2003-7-2
	
The Next Steps in Signaling working group is considering protocols 
for signaling information about a data flow along its path in the 
network. Based on existing work on signaling requirements, this 
document proposes an architectural framework for such signaling 
protocols. 
This document provides a model for the network entities that take 
part in such signaling, and the relationship between signaling and 
the rest of network operation. We decompose the overall signaling 
protocol suite into a generic (lower) layer, with a separate upper 
layers for each specific signaling application. An initial proposal 
for the split between these layers is given, describing the overall 
functionality of the lower layer, and discussing the ways that upper 
layer behavior can be adapted to specific signaling application 
requirements. 
This framework also considers the general interactions between 
signaling and other network layer functions, specifically routing and 
mobility. The different routing and mobility events that impact 
signaling operation are described, along with how their handling 
should be divided between the generic and application-specific 
layers. Finally, an example signaling application (for Quality of 
Service) is described in more detail.

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