Abstract:
The basic DiffServ model lacks mechanisms to
prevent itself from being overload and to inform its internal
capacily to the outside world. This paper addresses the problem
by presenting a Fair Intelligent Admission Control (FIAC) over
an enhanced-DiffServ architecture. The central idea is to make
admission decision based on both informed network-status and
traffic QoS requirements at the edge node. This model has several
advantages : (1) it is backward compatible with DiffServ, (2)
it adapts to traffic load and network state changes, and (3) it
provides interactive communication between QoS requirements
and DiffServ network capability. In this paper, we use simulation
to evaluate the performance of DiffServ with or without FIAC.
The performance demonstrates that the new scheme is able to
admit traffic fairly and achieve edge-to-edge QoS under heavy
traffic conditions and network state changes.
