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I-D ACTION:draft-rawlins-admctl-ds-mgt-03.txt

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

	Title		: Edge Based Admission Control with Class Based Resource
	Author(s)	: D. Rawlins
	Filename	: draft-rawlins-admctl-ds-mgt-03.txt
	Pages		: 16
	Date		: 14-Jun-02
New value-added IP services such as VoIP requires per-flow 
admission control to be performed in order to ensure the admission 
of new traffic flows does not degrade the performance of the 
existing traffic flows in the network. Resource Reservation 
Protocol (RSVP) for Intserv [2205] is proposed to support per-flow 
admission control. However, RSVP requires per-flow state 
installation, per-flow state refreshment, per-flow traffic 
management and resource reservation on each node along a 
forwarding path, which cause significant scalability issues, 
especially on the boundary routers and core routers of service 
provides∆ networks, which need to process thousands of traffic 
flows as network aggregation points. Intserv over Diffserv 
networks proposed in [2998] requires the RSVP/Intserv processing 
only on boundary routers and edge routers. Nevertheless, 
RSVP/Intserv has still rarely been supported by boundary router 
vendors because of the scalability issue. The use of edge-based 
admission control with per-class resource management and policy 
control offers a scalable approach to manage per-flow admission 
control for QoS sensitive applications.

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