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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  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  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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