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[Diffserv] I-D ACTION:draft-ietf-diffserv-pdb-def-02.txt



A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Differentiated Services Working Group of the IETF.

	Title		: Definition of Differentiated Services Per Domain 
                          Behaviors and Rules for their Specification
	Author(s)	: K. Nichols, B. Carpenter
	Filename	: draft-ietf-diffserv-pdb-def-02.txt
	Pages		: 18
	Date		: 02-Jan-01
	
The differentiated services framework enables quality-of-service
provisioning within a network domain by applying rules at the edges
to create traffic aggregates and coupling each of these with a
specific forwarding path treatment in the domain through use of
a codepoint in the IP header [RFC2474]. The diffserv WG has defined
the general architecture for differentiated services [RFC2475]
and has focused on the forwarding path behavior required in routers,
known as 'per-hop forwarding behaviors' (or PHBs) [RFC2474, RFC2597,
and RFC2598]. The WG has also discussed functionality required
at diffserv (DS) domain edges to select (classifiers) and condition
(e.g., policing and shaping) traffic according to the rules [RFC2475,
MODEL, MIB]. Short-term changes in the QoS goals for a DS domain
are implemented by changing only the configuration of these edge
behaviors without necessarily reconfiguring the behavior of interior
network nodes.

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