Abstract:
For IP networks to become a service oriented
architecture, it is crucial to provision a network architecture that
is capable of differentiating and supporting quality of services
(QoS) to applications. In this paper we propose a new end-to-end
QoS framework, called End-Diff, that has a number of desirable
properties. The new architecture has the scalability property of
DiffServ, pioneers a novel path congestion control, allocates
bandwidth fairly among flows and aggregates, and is capable of
negotiating QoS paths among domains through BGP QoS
extension. The new architecture makes use of a simple control
plane of a router and does not require any sophisticated PHB
scheduling in its forwarding plane. Via simulation, we
demonstrate that End-Diff QoS architecture performs
excellently in terms of scalability, overhead, route selection
policy, fairness, packet delay and jitter.
