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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-04.txt
Pages : 47
Date : 2003-9-29
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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