A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Verification scenarios for Measurable Forwarding PHB (Per-Hop Behavior)
Author(s) : N. Morita
Filename : draft-morita-tsvwg-mfverify-00.txt
Pages : 7
Date : 2003-10-31
The Priority Promotion Scheme (PPS) is a new scheme for traffic
control; specifically, the PPS achieves end-to-end QoS for
interactive multimedia services by exercising admission control for
series of packets on a packet-based network. The scheme is based on
the end-to-end measurement of network resources by end systems. The
destination end system notifies the conditions of receipt for a
limited set of packets sent from the source end. If this is
acceptable, the source end system then promotes the priority of the
succeeding IP packets to firmly establish the session. The network
is only assumed to support a per-class form of priority control,
since this allows the end systems to measure remaining resources
without affecting the existing streams. If all end systems behave in
the above way, we can achieve specific levels of end-to-end QoS
without maintaining per-flow states in each item of network equipment.
The PPS is based on a new per-hop forwarding behavior, called
measurable forwarding (MF-PHB), which will use the DiffServ
architecture.
In this document, we propose a way to verify whether MF-PHB is
realizable by elaborating configurations of existing equipment.
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