A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : LC-PCN: The Load Control PCN Solution
Author(s) : L. Westberg, et al.
Filename : draft-westberg-pcn-load-control-03.txt
Pages : 41
Date : 2008-02-25
There is an increased interest of simple and scalable resource
provisioning solution for Diffserv network. The Load Control PCN
(LC-PCN) addresses the following issues:
o Admission Control for real time data flows in stateless Diffserv
Domains
o Flow Termination: Termination of flows in case of exceptional
events, such as severe congestion after re-routing.
Admission control in a Diffserv stateless domain can be performed
using two methods:
o Admission Control based on data marking, whereby in congestion
situations the data packets are marked to notify the PCN-egress-
node that a congestion occurred on a particular PCN-ingress-node
to PCN-egress-node path.
o Probing, whereby a probe packet is sent along the forwarding path
in a network to determine whether a flow can be admitted based
upon the current congestion state of the network
The scheme provides the capability of controlling the traffic load in
the network without requiring signaling or any per-flow processing in
the PCN-interior-nodes. The complexity of Load Control is kept to a
minimum to make implementation simple.
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